Release notes
for the "preview" release channel

Please consider these versions as "beta". They have been thoroughly tested in our labs, but there may still be limitations in certain monitoring configurations. Please do not use this version on live systems on which you have to rely on!

Please use the "Auto-Update" feature to update your PRTG installation with the latest preview version: In the PRTG web interface, navigate to Setup | Auto Update.

Download PRTG · Manual: "Software Auto-Update" · Other Release Channels

September 2nd 2024 - Version 24.3.100.1279

Improved

Sensors

EXE/Script sensors

We improved the tooltip text information for the setting Parameters in the sensor Settings for EXE/Script and EXE/Script Advanced sensor types. If you hover over the tooltip icon for Parameters, you can see the following additional information: This setting can pose a security risk because sensitive information in the parameters appear in the sensor log. Use placeholders like %windowspassword or %scriptplaceholder1 to encrypt sensitive information and enable PowerShell Security Enhancement under Setup Monitoring Experimental Features to increase your security. This information is valid for the Result of Sensor [Sensor ID].Data.txt that is created when you have enabled the Result Handling option Store result in the sensor Settings.

HTTP v2

You are now able to include the HTTP v2 sensor in a device template when you have added the sensor to an appropriately configured device before. The device template is created when the HTTP endpoint returns status 200 (OK), using the same settings as the templated sensor. You can edit the device template afterwards if you need different status codes.

Fixed

Server

PRTG probes	We fixed an issue that led to probes (local and remote) being disconnected from time to time when they were connected via satellite communication like VSAT, for example used on merchant vessels. As satellite communications have a very high latency, the keep alive messages from the probes would take too long and the probes would disonnect due to a missing timeout.
API keys	We fixed an issue where changes via PRTG API v2 to any API key were not saved in the History tab of a user account. For example, when you created or modified an API key using /api/v2/users/api-keys/ endpoint, the changes would not be logged in your user account History tab.

Fixed

Sensors

WMI Event Log sensor

We fixed an issue for the WMI Event Log sensor where the entry for Log file in the WMI Event Log Monitor settings was missing when you ran an auto-discovery with device template before that included this sensor type.

Fixed

Multi-Platform Probe

Auto-discovery group

We fixed an issue that occurred on the Multi-Platform Probe where creating an auto-discovery group with a specific device template did not work anymore in previous PRTG versions. The issue happened, when you created a device template with a sensor that runs on the Multi-Platform Probe, like the Ping v2 sensor, and you added an auto-discovery group with the setting Auto-discovery with specific device templates afterwards, then the devices with the added sensor in the template would not be created. You also had to have selected the radio button for Perform auto-discovery for devices/IP addresses already known within PRTG, so that localhost is not skipped as well as List of individual IP addresses and DNS names (IPv4) in order to run into this issue.

Fixed

PRTG App for Desktop

System information

We fixed an issue where the System Information page was not displayed for some devices in the PRTG App for Desktop. Also for API calls https:///api/table.json?id= with parameters like Serial Number, the value was returned as NULL. The issue happened because the PRTG App for Desktop interpreted the returned JSON table as a numeric value instead of a string what resulted in an empty system information field.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 24.3.100.1279

sha256_exe 405143DB0773047A4EAA84AF3CBCFD2BF6E857DFC99D3A0444235CA39DC49E11
sha256_zip D0CCFAA4AFCC30D2D8D31040F64EA3761A1F6A8F126571FA33AB9F64E845D733

Lab

Sensors

REST Custom v2 sensor

You are now able to include the REST Custom v2 (BETA) sensor in a device template when you have added the sensor to an appropriately configured device before. When you run an auto-discovery with the mentioned device template on a new device, the sensor will be created afterwards. Please note that you need to enable the PRTG BETA feature under Experimental Features in the PRTG Setup first in order to use this sensor.

SSH INodes Free v2 sensor

You are now able to include the SSH INodes Free v2 sensor in a device template when you have added the sensor to an appropriately configured device before. When you run an auto-discovery with the mentioned device template on a new device, the sensor will be created afterwards. Please note that you need to enable the PRTG BETA feature under Experimental Features in the PRTG Setup first in order to use this sensor.

Lab

PRTG API v2

API	You are now able to receive and edit information for and on the /devices/{id} endpoint via GET or PATCH request. For example, lookups for usergroupid are shown under GET endpoint /api/v2/setting-lookups/usergroupid. For a PATCH request, use the /devices/{id} endpoint. Please note that the PATCH request must contain the same number of elements in the array and the same usergroupids as the GET request to get proper results. We fixed an issue that occurred when you executed a GET request on the endpoint /experimental/channels for a certain sensor ID where the sensor did not have an active Scanning Interval, for example inactive sensors. Instead of a 200 (OK) response you would get a runtime error: invalid memory address or nil pointer dereference in the Server.log.
Deprecation of endpoints	With this PRTG version we announce the deprecation of several endpoints in the PRTG API v2. Deprecation for endpoints means, that they will be removed or replaced in the future, therefore please make sure to check if you are using some of them and prepare to migrate to the replacement endpoints. For example, the endpoint GET /channels will be replaced by /channels/{id} and /experiemental/channels, whereas the experimental endpoint can still be changed but is aimed to become a stable endpoint as well. In course of this change, we also removed the following experimental endpoints: GET /experimental/devices/id/settings, GET /experimental/sensors/id/settings. In the section /overview for the OpenAPI Documentation, we added detailed information about filtering, include parameters and endpoint maturity. For all relevant documentation, please have a look at PRTG API v2 Reference and PRTG API v2 Overview
Swagger UI	We fixed an issue where the generic autogenerated Examples for any API call did not work anymore and the returned response for those examples was not correct. For example, when you opened the call for GET Channels with the Example Channels you would not get all available fields or correct naming in the Example Value. To open the Swagger UI you need to enter http(s)://<(yourprtgserver)>:Port/api/v2/oas/.

Lab

New UI

Color Mode	We fixed an issue that occurred when you selected the Color Mode Dark in the PRTG classic interface and opened the new UI afterwards. Previously, not all settings and pages, for example reports and sensor settings, were displayed in Dark mode but still shown as Light (default).
Maps	We fixed an issue where linked objects in maps opened in PRTG classic interface. The issue occurred when you used the Select object option in the maps Properties, for example, to create a link. The link will then direct to the PRTG classic interface instead of the new UI.
Settings	We fixed an issue where the context menu was available for objects included in iframe pages in the new UI. For example, if you right-clicked on a parent object in settings like the Inherit from location, a context menu opened what should not have been available in this case.
System Setup	You are now able to view and edit settings in the PRTG Setup pages within the new UI when you are logged in with an account with administrative rights. This includes all setup pages under System Administration, however, the License Information page will direct you to the classic UI currently when you want to update information on your license in the new UI.

Improved

Various

All parts of PRTG

Various other minor fixes and improvements, updated user manual.

August 12th 2024 - Version 24.3.99.1463

Improved

Server

Update to OpenSSL 3.0.13

To ensure secure communication furthermore we updated to OpenSSL version 3.0.13 since OpenSSL also retired the 1.1.1 series end of September 2023. The following TLS versions will be supported in the connection security settings for Probe Connection and PRTG Web Server settings: TLS 1.3, TLS 1.2, TLS 1.1, TLS 1.0.

Please note when you update to this PRTG version, that you cannot add new installations of mini probes because OpenSSL 1.0.2 is no longer supported. Existing installations of mini probes should not be affected.

Changed

Server

Notifications

We changed the Teams Webhook feature for notifications Send Microsoft Teams Message in PRTG, since Microsoft will retire Office 365 connectors within Microsoft Teams in October 2024. Microsoft provides the new Workflows app that you can use for a workflow to post messages from a webhook request. With this PRTG version, Send Microsoft Teams Message notifications will now support Workflow webhooks that you can configure in your Microsoft Teams. For more information on how to set up your Teams notification in PRTG please see our Knowledge Base article: How do I create a webhook for the PRTG notifications to Slack and Microsoft Teams?

Improved

Sensors

Cisco Meraki Network Health sensor	We updated the API call that is used within the Cisco Meraki Network Health sensor since the formerly used API call /organizations/{organizationId}/devices/statuses was deprecated.
Probe stability	We improved the stability on PRTG probe level to avoid the risk of probe issues, such as access violations in the probe.log or a no longer working probe service.
FortiGate VPN Overview sensor	With this PRTG version we introduce the new Virtual Domain Settings (VDOM) where you can select the virtual domain that this sensor monitors during sensor creation. Existing sensors are unaffected as the setting will show the default value root.

Fixed

Sensors

DNS v2 sensor

We fixed an issue where the DNS v2 sensor with Query Type Host address IPv6 (AAAA) or Host address IPv4 (A) (default) only considered one IP address returned by a hostname instead of any matching IP address. For example, if you wanted to check entries of a same DNS for IPv4 and IPv6 addresses in separate devices and an entry for IPv6 was missing or invalid, both variants (IPv4 and IPv6) would fail what instead should have been only the sensor running on the IPv6 device.

MQTT Round Trip sensor

We fixed an issue for the MQTT Round Trip sensor where the default value was not displayed correctly in the MQTT Specific settings for Topic. Previously, the sensor Topic displayed was PRTG/roundtrip/%%sensorid.

Fixed

WebGUI

Maps

We fixed an issue where the SNMP Uptime v2 sensor was not displayed in the map properties Top 10 lists for Longest System Uptime and Shortest System Uptime in previous PRTG versions. You could observe that other SNMP Uptime and WMI Uptime sensors on your system were shown in the lists but the SNMP Uptime v2 was missing.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 24.3.99.1463

sha256_exe BF4645079DF74DA39EF989C0FAD7334297E8482911E5F222C8972B33C57220AE
sha256_zip 21BF3D1C9505F02BE092823A18796F4C8A88BB4C18B796B8F3DBF5B7FB9DF22C

Improved

Multi-Platform Probe

PRTG Setup

You will now see an additional section under Optional Downloads in the PRTG setup menu for the Multi-Platform Probe. This section can be found in the menu point Remote Probes and contains a link to the Multi-Platform Probe manual with installation guide, a download link for the required NATS server Download NATS Server for PRTG installer and additionally a step-by-step instruction for the Paessler Linux package repository (Debian and Ubuntu and RHEL). You can install the RPM package on a Linux system running Red Hat Enterprise Linux (RHEL) version 9.

PRTG Status

We removed the notification on the PRTG Status page under Probes for connected Multi-Platform Probes that you need to install .NET for the Multi-Platform Probe.

Lab

Sensors

Cisco WLC Access Point Overview sensor	You are now able to include the Cisco WLC Access Point Overview (BETA) sensor in a device template when you have added the sensor to an appropriately configured device before. When you run an auto-discovery with the mentioned device template on a new device, the sensor will be created afterwards. Please note that you need to enable the PRTG BETA feature under Experimental Features in the PRTG Setup first in order to use this sensor.
SSH INodes Free v2 sensor	You can try out the experimental SSH INodes Free v2 (BETA) sensor that monitors the free index nodes on disks of Linux/Unix and macOS systems via Secure Shell (SSH) and which was rewritten to work also on the Multi-Platform Probe. This sensor comes with the channels Downtime and Free INodes [Mount], like the former SSH INodes Free sensor. Please note that this sensor does not support the Compatibility mode for SSH Engine anymore. This feature was already deprecated in previous PRTG versions.
SNMP Custom v2 sensor	You are now able to include the SNMP Custom v2 (BETA) sensor in a device template when you have added the sensor to an appropriately configured device before. When you run an auto-discovery with the mentioned device template on a new device, the sensor will be created afterwards. Please note that you need to enable the PRTG BETA feature under Experimental Features in the PRTG Setup first in order to use this sensor.

Lab

New UI

Add group	You can now create a group in the new UI via context menu and action button on probe and group level with the corresponding user rights. After you have created a group, you will be redirected to the parent object where the group was created. Please note that you cannot add a group on root level.
Edit channel settings	We adjusted the wording for Edit Settings in the context menu when you opened it for a sensor. The menu option Edit Settings was displayed twice, however, the wording with the wheel icon should have been Edit Channel Settings instead of Edit Settings.
Login behavior	We added an automatic login timeout that happens after inactivity for 15 minutes when you are logged in on PRTG and want to navigate to the System Setup pages. You will then be logged out and receive a message Please re-enter your credentials to gain access to admin settings. After you have entered your login credentials again, you will be redirected to the page you wanted to navigate to before the automatic login timeout.
Monitoring	We fixed an issue that occurred in the Firefox browser console when you navigated to or within the Monitoring option. The JavaScript error message displayed was uncaught (in promise).
Mobile view	We fixed an issue for lookup bars in the new UI mobile view that were not displayed in the correct color mode like they are shown in the desktop view.
Navigation	We added tabs for Logs and Maps to the main menu below the home icon where you are now able to create, edit and view maps within the new UI and where you can also view your logs for objects. When you open the Logs tab, you can see an additional filter option Choose Filter where you can select, for example, Filter: paused/resumed for objects. Please note that the feature for map rotation is currently disabled in the new UI.
PRTG Setup	We improved the setup page in the new UI for users without administrative rights. You will now have the sections Account Settings, Optional Downloads and Support on the Settings (setup) page in PRTG. Under Account Settings you now have the option to manage your API Keys and My Account settings. Please note that a user with read only rights is not allowed to access the setup main page and will instead receive a 403 - access denied error.
View settings	We fixed an issue that occurred when you navigated from the Sunburst view to the Tree view and vice versa with your keyboard arrows and clicked enter to confirm. Previously, you would see an unknown error displayed with the message An unknown error occurred. If necessary, try to reload the page.

Lab

PRTG APIv2

API

You can now edit the Scanning Interval for a sensor in the PRTG APIv2 via GET or PATCH request in the /devices/{id} endpoint.
We fixed an issue where the device settings were not available when you executed a GET request on the schema endpoint /schemas/kind when kind=device with the purpose create under parent object. The sections which are marked as inheritable should be displayed, what was not the case in previous PRTG versions. The following device settings are now available when you execute the mentioned API call: cloudcredentials, dbcredentials, paessler-http-credentials_section, paessler-microsoftazure-azure_credentials_section, paessler-rest-authentication_section, scriptplaceholdergroup, vmwareconnection and windowsconnection.
We added the settings section Schedules, Dependencies, and Maintenance Window that is now available in the device schema API. You can edit and view the according settings via the GET and PATCH endpoints over /devices/. Date and time indication will be displayed in UTC format, for example 2024-07-04T19:58:00Z. With GET device/id you are also able to fetch the inherited settings via scheduledependency_inheritance: true.
We fixed an issue for the GET /experimental/devices endpoint that did not return the value for parenttags of a group if the group or devices within that group were paused.
We fixed an issue for the GET /probes/id endpoint that did not return a value for the status_info field when you have paused the local probe with message before via POST request on /probes/{probeId}/pause.

Improved

Various

All parts of PRTG	Various other minor fixes and improvements, updated user manual.
Languages	We updated the Japanese language files.

July 17th 2024 - 24.3.98.1205

Fixed

PRTG APIv2

PRTG application server

We fixed an issue for the PRTG application server that occurred in the previous Preview version 24.3.98.1197 where you could observe an excessive increase in memory consumption in the Application Server Health (Autonomous) sensor. The issue occurred in connection to the newly introduced endpoints for sensor channel settings.

Please note that a certain rise in memory is noticeable and expected due to this new endpoint but should not exceed more than 70kb per channel.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 24.3.98.1205

sha256_exe 6CFB801D2AA7C2C976E8DC43D01168CA73C33F0C4FE345BE3A4224620AA0C62E
sha256_zip 73E203B79B7BD1E8F00DE6BEFFF4B421014ECB5AEFCC1D8D6B7DB6EBFCD01519

Improved

Various

Languages

We updated the German, Spanish, French, Portuguese, Russian, Japanese, Chinese and Dutch language files.

July 11th 2024 - 24.3.98.1197

Improved

Security

Webserver

With this PRTG version we provide various fixes to improve security and stability.

Improved

Sensors

Sensor message

We improved the error message for certain sensor types that appears when you need to check credentials or logfiles for a sensor. Affected sensors are AWS sensors, EXE/Script sensors, Zoom sensor, Veeam sensors, OPC UA sensors and Cloud sensors. The previous error message did not indicate that the setting for Store Result is not enabled by default and that you first need to enable it and run a rescan of the sensor before you can check the logfiles. An example error message now displays The sensor could not authenticate with AWS. Check your credentials for AWS or select 'Store result' under Debug Options | Result Handling in the sensor settings, rescan, and check the \\Logs\\sensors subfolder of the PRTG data directory on the probe system.

Fixed

Server

API keys	We fixed an issue for API keys that did not display the correct Access Level when the user to whom the API key was assigned was deleted or moved from the corresponding user group. The API Key List has now an additional column Effective Access Level that displays the up to date and in use access level for the relevant user.
Remote probes	We fixed an issue where a Core logfile was created on a remote probe after you started the Administration Tool on that relevant remote probe. The logfile was created under C:\ProgramData\Paessler\PRTG Network Monitor\Logs\core.

Fixed

Sensors

HPE 3PAR Drive Enclosure sensor	We fixed an issue for the HPE 3PAR Drive Enclosure sensor that led to several issues when you used multiple sensors of that type on the same device on the same probe. The sensors would report an error with the message that the session could not be started (Cryptographic functions must be set on at least one blocksize). In some cases the sensors would work again if you enabled the Store Result function, but then ran into an unknown state if you disabled it again. Important:This fix introduces a maximum number of parallel connections to the same device with same credentials. If that limit is reached then you will receive the error too many concurrent connections. This limit is currently hard-coded to 20 concurrent connections with the same credentials/device combination within the HPE 3PAR Drive Enclosure sensor. This issue also occurred on the Multi-Platform Probe.
Microsoft Azure/ Microsoft 365 sensors	Your Microsoft Azure and Microsoft 365 sensors will now use correctly proxy settings when you have configured those on the relevant device. Previously, the proxy settings were displayed correctly in the logs but disregarded for Azure AD login.
OPC UA Custom sensor	We fixed an issue for the OPC UA Custom sensor that reported an error with the message No Value is set in certain cases. The issue could happen in cases when the DisplayName, BrowseName or Description attribute was empty.
WMI Event Log sensor	We fixed an issue for the WMI Event Log sensor where the sensor did no longer display a sensor event message for triggered events. You could observe the missing information in the Message column of the Log tab of the sensor as well as in the sensor status bar below the sensor name. The sensor also only reported the status OK in certain cases.

Note

Known Issue

PRTG application server

You will notice a higher memory usage on your system when you run the PRTG application server and when you update to this PRTG preview version 24.3.98.1197. The issue occurs because a change for channel settings in the PRTG API v2 requires more memory. We are working on a fix for this issue with high priority.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 24.3.98.1197

sha256_exe D9F48BF168144D2795A4DD1FAECD756D7D3C1FCF0E72C3682746F7645435BC9F
sha256_zip D49DED23E7D0C2F3C97FFD583CC16FCAA845E5FD2617DC1135ACA283C687C11A

Lab

PRTG APIv2

API

We fixed an issue that occurred when you sent an invalid body via request to the device path endpoint for any device. The returned error response code would be 400 with the message BAD GATEWAY in those cases. The response will now be BAD REQUEST for invalid values.
You are now able to filter for certain objects via GET request in the following endpoints: experimental/sensors, experimental/groups, experimental/probes and experimental/devices. You can filter for ID, Kind, Status, Host, Hostv6, Tags, Interval and Type. Please note that the filter for status = connected in the experimental/probes endpoint currently throws an error with the message The provided filter is invalid. Cause: connected is not a valid enumeration value for the field status.
/channels/{id} and /experimental/channels are new endpoints for retrieving all channel measurements and settings. In the future we will also provide editing functionality for channels based on these endpoints.

Lab

New UI

Login	We improved the text message that is displayed when you are logged out due to inactivity. Previously, the message displayed was Your have been logged out due to inactivity.
Settings	You are now able to edit the settings of a sensor channel via the PRTG new UI. On a channel card of a sensor you will now see an additional Actions button: Edit Settings. This button will open a new dialogue window where you can make changes to the selected channel. If you do not change anything or if you enter invalid values, the Save Settings button will stay inactive.

Improved

Various

All parts of PRTG	Various other minor fixes and improvements, updated user manual.
User manual	We updated the information for Possible Values in the section Sorting and Advanced Filtering in our user manual.

June 25th 2024 - 24.2.97.1683

New

Sensors

Script v2 sensor

The Script v2 sensor left its BETA status with this PRTG version and is now fully supported. We introduced this sensor type as experimental sensor with PRTG version 23.1.82.2074. The sensor executes a Python script that returns data in JSON format and shows the exit code. This way you can create your own custom script sensors that may not be available in PRTG by default. For available example scripts and how to use them, please see the Knowledge Base article: I want to use the Script v2 sensor example scripts. What do I need to know?

Improved

Server

API keys	You are now able to delete created API keys under Account Settings in your PRTG Setup via multi-edit selection. Previously, API keys could only be deleted individually. For every API key that you delete, PRTG will add an entry in the History tab of your User Account settings.
Auto-discovery	You can now add multiple subnets to the auto discovery setting. If you want to include multiple addresses and subnets, enter them in the field IPv4 and Subnet (IPv4) as a list separated by a comma. Please note that this feature applies only for IPv4 subnets and does not support IPv6.

Improved

Sensors

NetApp v2 sensors

We updated the available lookup values for NetApp v2 sensors that were not supported in previous PRTG versions before. For example, the NetApp System Health v2 sensor now supports the values Tri Path, Tri Path HA and Virtual state for the status Up in the Storage Configuration Path channel. Other NetApp v2 sensors that have now addtional supported lookup values are NetApp SnapMirror v2 for the channels Mirror State and Policy Type and NetApp NIC v2 sensor for the channel State.

Microsoft Azure

With this PRTG version we introduce a new setting Microsoft Azure Management Endpoint in the Credentials for Microsoft Azure. This setting allows you to change the API endpoint for your region that can differ from the default URL management.azure.com to use Microsoft Azure sensors, such as Microsoft Azure SQL Database sensor or Microsoft Azure Storage Account sensor in your environment. Please note that this setting is locked by default and can be edited upon request.

Changed

Sensors

EXE/Script sensors

We removed the following libraries from the Sensor System since they are no longer needed: MongoDB.Bson.dll, MongoDB.Driver.dll, Mono.Security.dll. The libraries were a leftover from the MongoDB System Health sensor that we announced as deprecated with PRTG version 16.2.23 and finally removed from PRTG with PRTG version 16.3.25.

Fixed

Server

API calls	We fixed an issue where the PRTG Core server generated a high CPU usage when you used an API call for a historic data report with a negative average interval avg=-[interval]. PRTG considered the API call as invalid in these cases and could not respond what caused a timeout and thus lead to a higher usage in CPU.
PRTG Core server	We fixed an issue that occurred when you updated to the previous PRTG version 24.2.94 where in certain cases the PRTG core server service could not start and could not be restarted as well. The PRTG web interface would report timeouts or load endlessly after login. In some other rare cases, the update to PRTG version 24.2.94 was successful, however, the web interface performance was very slow in loading pages and you also could observe ReadLock entries in the core.log. Rolling back to the former PRTG version 24.1.92.1554 would solve the issue.
Remote Probe Installer	We fixed an issue where the installer window for a remote probe could not be closed with the x button in certain cases. The issue happened when you changed the Setup in your PRTG installation under Probe Connection Settings to allow probe connections to the core server when you already executed the remote probe installer. The installation process could be finished successfully, however, you were not able to close the dialogue window of the remote probe installer.

Fixed

Sensors

AWS EC2 v2 sensor	We fixed an issue for the AWS EC2 v2 sensor that reported the error message Channel with ID [ID ]is not defined in very rare cases because the sensor sometimes received zero 0 values for the DiskReadOps (Average) metrics. Since the sensor expects values for every scan, it reported the mentioned error when it received 0 values. The issue occurred when you used the sensor on a Linux instance but could also occur on a AWS EC2 Windows system.
Auto-discovery	Running an auto-discovery with a device template that includes the following sensor types will now add these sensor types to your device as expected: Windows Print Queue sensor, VMware Datastore (SOAP) sensor and SMTP&IMAP Round Trip sensor.
Microsoft Azure	We fixed an issue for Microsoft Azure sensors, like Microsoft Azure Storage Account sensor, Microsoft Azure SQL Database sensor or Microsoft Azure Subscription Cost sensor, where the Result of Sensor log reported the error The sensor could not get a response from the server. 400 (Bad Request) in certain cases. The issue occurred when you used a scanning interval of 12h or 24h because the sensor used an invalid format that could not be handled by the Azure REST API.
POP3 sensor	You can now create a device template from a device that includes a POP3 sensor and the sensor will be added to the device afterwards. In previous PRTG versions, when you opened the dialogue window Create Device Template, the sensor was not added to the relevant device after you received the success message Create Template Results, although the sensor was listed in the results.
Probe memory consumption	We reduced the possibility of a higher memory consumption and a memory leak on the probe that occurred in certain cases when you ran SNMP and HTTP/HTTP Advanced sensors on your local or remote probe. Eventually, the probe would report the status disconnected. Restarting services only helped for a certain while in these cases.
ProbeWMI.log	We reduced the risk for PRTG logs to get a large file size when WMI exceptions occur, especially for the ProbeWMI.log. This could lead to a full disk in certain cases since the file size increased very quickly and therefor result in a not working probe system in the worst case.
Syslog Receiver & SNMP Trap Receiver sensor	We adapted the information for Result Handling in the Debug Options help tooltip so that it displays the correct file name and subfolder where the sensor result is stored. The file name now is UDP Debug Port [Port][Date].log in the Logs/debug subfolder for both sensor types.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 24.2.97.1683

sha256_exe 4656027422D286FFE21288D383963447908AB58F59F9C1C9D7846189D72263E6
sha256_zip A6DA22B56B1D4AA9CFBFD8F2F0A3BE2E229976C82B98B4C38048D1ED3EB6513D

Lab

Sensors

Cisco WLC Access Point Overview sensor

You can try out the experimental Cisco WLC Access Point Overview sensor (BETA) that monitors your access points that are connected to your Cisco Wireless LAN Controller (WLC). The sensor will show the following columns during sensor creation: MAC address, Name, Location, State for the access points as well as IP address, Model, Serial Number and Number of Slots. The Number of Slots represents the number of radios and antennas for an access point. The sensor comes with the channels Operational Status, Admin Status, Max Rx Utilization, Max Tx Utilization, Max Channel Utilization, Client Count and Client Count with Poor SNR (Signal to Noise ratio).

Fixed

PRTG MultiBoard

Template Transfer

We fixed an issue where the PRTG MultiBoard ran into a timeout in the previous PRTG version 24.2.96.1315 when you used the Template Transfer (BETA) feature in order to move a custom device template from one PRTG server to another. Please note that this feature is only available when you run PRTG with a Paessler PRTG Enterprise license.

Lab

PRTG APIv2

API

You are now able to filter for certain objects in the list endpoints via PRTG API v2. You can filter for ID, Kind, Status, Host, Hostv6, Tags, Interval and Type. Filtering works on the endpoint experimental/devices via GET request.
The endpoint for experimental/probes/{id}/overview now includes the field probe_status which will show you the status of your local probes and remote probes. The status will be displayed in the response when you execute a GET request on the mentioned endpoint. The following probe states are possible: Connected, Disconnected, Hello, Banned, Initializing, Waiting, Updating, Manual, Restart.
We added a new endpoint /setting-lookups/{lookup-name} in the Objects section where you can get all possible values for a setting lookup. The name of the lookup and the item ID are valid parameters that you can enter when you execute a GET request for this relevant endpoint.

Lab

New UI

Web Interface

You can now edit the settings of a group via context menu in the device tree, tables and cards. After you have saved your changes a growl message appears Settings have been saved. It may take a while for the change to apply. Additionally you can edit the settings of your local or remote probe via context menu. When you click on Edit Probe you will be directed to /monitoring/probe/{probeID}/settings.
We fixed an issue where the links on a sensor Settings page directed to the classic PRTG web interface instead of the new UI.

Improved

Various

All parts of PRTG	Various other minor fixes and improvements, updated user manual.
Sensor languages	We updated the German and Spanish language files for certain selected sensor types.
User manual	We updated the versions supported for Veeam sensors (Veeam Backup Job Status sensor, Veeam Backup Job Status Advanced sensor) regarding the Veeam Backup Enterprise Manager.

May 13th 2024 - Version 24.2.96.1270

Fixed

Server

Libraries

You can now filter for a specific sensor type when you select Add Library Node for your library and when you choose the option Show a collection of filtered sensors and Show only specific sensor types for that node. In previous PRTG versions, when you filtered for the sensor type SSL Certificate sensor, the SSL Security Check sensor would be added to the node as well, for example.

PRTG Probe Service

We fixed an issue with PRTG stable version 24.2.94.1400 where the Probe update to this PRTG version failed and therefore the Probe service(s) did not start in some cases. PRTG would report an error message like PRTG probe service could not be started: The service did not respond to the start or control request in a timely fashion or Windows could not start the PRTG Probe Service service on Local Computer Error 1053: The Service did not respond to the start or could request in a timely fashion when you were affected by this issue. In some rare cases also the Core service was affected when you updated to PRTG stable version 24.2.94.1400. The issue occurred because Windows tried to load the certificate cache what took too long for the Probes during startup and caused a timeout. New installations of PRTG were also affected by this issue.

Fixed

Sensors

Active Directory Replication Errors	Your Active Directory Replication Errors sensors will now work properly again when you update to this PRTG version. In the previous PRTG versions, the sensor reported the error Replication Neighbor cannot be found in some cases when you updated to PRTG version 23.1.82.2074 and higher. The issue occurred because we improved the method of password transmission for certain sensor types, which could not be handled by the Active Directory Replication Errors sensors correctly.
HTTP v2	We fixed an issue for the HTTP v2 sensor that appeared during sensor creation process on the Add Sensor dialog. In the section for HTTP Specific the default URL value would display https://%%host/ instead of https://%host/. This issue also occurred when you added the sensor to your Multi-Platform Probe.
NetFlow sensors	We fixed an issue where in some cases the remote probe reported the status disconnected from time to time when you moved Flow sensors to that specific remote probe or when you had Flow sensors running on that specific remote probe. The issue occurred for sensors, like NetFlow and sFlow sensors, for example. In the Probe.log you could also observe access violations for the FlowProcessor or the FlowSender.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 24.2.96.1270

sha256_exe 89A23790DA608F04BCB5D666B49211A5E061CDDB42B6CA2C207F61D8D068DB88
sha256_zip 2703305927931BA3C598C6929522DDF13377B18D8A82FC3A73DB2935E2E7F4DF

Lab

Sensors

SNMP Traffic v2

We fixed an issue for the SNMP Traffic v2 sensor that could not be created in some cases and reported the error message The target system did not return a result for the requested OID.

Lab

New UI

Notifications

You can now add and edit under Notification settings your notification Schedules, notification Contacts and notification Templates. Please note that this feature is not available on mobile view.

Lab

PRTG API v2

API

You are now able to clone objects (group, device, sensor) via PRTG APIv2 POST request and the endpoint object name/id/clone. The settings of the cloned object will have the same settings as the original object. A cloned sensor, for example, has the default name 'Clone of '. After you have cloned an object it is paused by default. Here the same clone rules apply as for the classic PRTG UI, that means you cannot clone fixed objects such as the root group, a probe device, or PRTG system-internal sensors. When you have entered a wrong object ID for cloning, the response will return a 404 not found error message.

Improved

Various

All parts of PRTG	Various other minor fixes and improvements, updated user manual.
Languages	We updated the German, Spanish, French, Dutch, Portuguese, Japanese, Chinese and Russian language files.
Sensor languages	We updated the German and Spanish language files for certain selected sensor types.

April 22nd 2024 - Version 24.2.95.1535

Improved

Security

Webserver

With this PRTG version we provide various fixes to improve security and stability.

Improved

Server

Notifications

We improved the delivery time for HTTP notifications that took longer in certain cases in the previous PRTG versions when you used a HTTP target URL in the Execute HTTP Action section of the notification template. This issue occurred because the PRTG fallback handling for SSL still tried to establish a TLS secured connection what did not lead to an error but to a longer waiting time for PRTG.

Improved

Sensors

Ping v2

You are now able to create the Ping v2 sensor via device template if you select the option Create Device Template on a device where you can select the Ping v2 sensor in the Create Device Template dialogue window. The Ping v2 sensor left its BETA status with PRTG version 24.1.92.1554 and is now fully supported. This feature also works on a device for the Multi-Platform Probe.

Improved

Multi-Platform Probe

Probe Adapter

You will now receive a proper error message in the probe adapter log when your NATS server for connection does not offer a secured TLS connection but PRTG is configured to connect with TLS in the Multi-Platform Probe Connection Settings.

Fixed

Server

Contact support	We fixed an issue where the button Contact Support was missing in the help bar and also in the Support section on the PRTG Setup page when you ran PRTG with a trial license. This issue also affected Paessler PRTG Hosted Monitor.
Cluster	We fixed an issue where the API call for api/health.json reported wrongly a disconnected Cluster probe although the probe was connected at this time. You could also see this behavior on the System Status page in PRTG under Probes where the Cluster Probe was reported as not connected yet.
Maps	We fixed an issue for public maps access that allowed users to see objects in the device tree despite of their assigned security context when you had two or more public maps open in a tab for map rotation view.
PRTG Administration Tool	You will no longer receive an error when you click on the button Stop Service or Start Service (ignore changed settings) for the Core and Probe service in the PRTG Administration Tool when you run it as a 64bit version on your system. This issue occurred in the previous PRTG stable version 24.2.94.1400 but did not happen when you run the PRTG Administration Tool in a 32bit mode. The reported error message in this case was One or more required program components of PRTG (PRTG Server.exe, PRTG Probe.exe) could not be found! Please re-run the installation program.
Search	You will now receive proper results from our Help documentation when you click on the More button on the Search Results page. This did not work in the previous PRTG versions and returned the message Your search request did not return any results (Help Documents) when you, for example, searched for the term Core Health. You could also see that your seach term was not resolved properly and displayed as core%20health.
Single Sign-on	You are now able to send a support bundle with all relevant files via Contact Support button on the Setup page when you are logged in to PRTG with a Single Sign-on user account. In the previous PRTG versions, sending a support bundle as a logged in Single Sign-on user would trigger the overload protection in PRTG and the bundle would not contain any htm files.
XML tables	We fixed an issue where the returned table for a queried XML was broken when you had an object, e.g. sensor, with a tag that contained an ampersand & in it.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 24.2.95.1535

sha256_exe 90FB4B96CFAC14607832904F9A8208F7739450A5E06F6EC0E42B06F69F721C5A
sha256_zip DEB5B7F67395ABED6DE0BFFD59A8BCA4B6583693DFB0207903AFB4B65D97C62C

Lab

New UI

Device settings	We implemented the sections for Windows Compatibility Options, SNMP Compatibility Options and Proxy Settings in the device settings in the new UI.
Notification trigger	You can now add and edit notification triggers for objects, like probes, groups, devices, and sensors. The notification triggers are available via context menu or Actions button for the relevant object.
Sensor settings	You can now edit the settings of a sensor via context menu in the new UI when you right click on the sensor you want to edit. Additionally you can edit the settings of a sensor in the Settings tab or via button Sensor Actions where you can perform actions like Pause Object or Scan Now. After you have saved your changes a growl message appears Settings have been saved. It may take a while for the change to apply.

Lab

PRTG API v2

API	You can now send GET requests to the following endpoints api/v2/groups/{id}, api/v2/sensors/{id} and api/v2/probes/{id} to receive relevant information about these objects.
PRTG application server	We fixed an issue where the PRTG application server created a panic log file when you uninstalled PRTG. The error message then reported was Error: could not uninstall system service PRTGAppServer: service PRTGAppServer is not installed. This issue occurred when you uninstalled PRTG without having the PRTG application server installed.

Improved

Various

All parts of PRTG

Various other minor fixes and improvements, updated user manual.

March 28th 2024 - Version 24.1.94.1397

Fixed

Server

PRTG Core server

We fixed an issue where PRTG ran into deadlocks in certain cases as of PRTG 24.1.94.1393, resulting in high CPU load and server crashes and restarts. This issue was more likely to happen if you ran aggregation type sensors, like Sensor Factory sensors, for example.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 24.1.94.1397

sha256_exe 822F650AB7568B499706AD177C86234653DA3FE05B8FCD48DF4DF4087032DC95
sha256_zip 843A5D52E418E7244C46267F2C04D0520B09201E45594C9C01ADB1B16885B01B

March 26th 2024 - 24.1.94.1393

Fixed

Server

Maps	We fixed an issue where the access of a public map resulted in the error message Map refresh failed when you updated to the previous PRTG preview version 24.1.94.1355. The workaround was to log in with an administrative user account. Public map access will now work again without an active user session when the map is configured for public access.
PRTG application server	We fixed an issue where running the PRTG application server caused a higher CPU load on the relevant system in the previous PRTG preview version 24.1.94.1355.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 24.1.94.1393

sha256_exe E618F410BC9B5FF9BE2C81DD0721746164F5DB0D78215F9B26A048CA311FB9D1
sha256_zip DB3F66C70F616BE61A5BB1DB60A76D9A3E1B3677919A696BE3ABB506901A65A8

Improved

Various

Languages

We updated the German and Spanish language files.

March 18th 2024 - 24.1.94.1355

Improved

Security

Sensors

The behavior of the Environment setting was changed for the EXE/Script and EXE/Script Advanced sensors to prevent remote code execution for Batch (.bat) scripts. Thanks to IT Matters Most GmbH who made us aware of that vulnerability and which can be tracked under CVE-2024-28055. Please note that this change might cause your running custom scripts to fail as it is no longer possible to use the environment variables placeholders in the Parameters setting for Batch (.bat) scripts anymore.

Webserver

We hardened PRTG against possible Cross-Site Scripting attacks via User Agent in the browser.

Improved

Server

Single Sign-on

We improved the Single Sign-on handling for PRTG user integration in Microsoft Azure AD to support the Microsoft Graph API for paging when a user is assigned to more than 100 groups. Previously, the issue occurred in certain cases that a user with Microsoft Azure AD integration could not log in to PRTG via Single Sign-on when he was assigned to more than 100 groups.

Due to limitations in the Access Token concerning the group memberships we need to switch to Microsoft Graph API for paging what was not yet supported by PRTG. The user would then receive the message that the login has failed. In the Core.log you could also find this error message for the user login: is no member of SSO groups allowed by PRTG.

You can configure the Group Claim Retrieval for Access token or GraphQL in the Single Sign-on settings.

Fixed

Server

Multi-edit	You will now be able to save the settings for all your selected sensors when you use the multi-edit function. This did not work properly before in the previous PRTG versions in certain cases. Saving the value Maximum (Mbit/s) for the channel Traffic Total when you have selected several SNMP Traffic sensors would only work for the first sensor in the list, not for all sensors that you selected via multi-edit.
Notification trigger	We fixed an issue for notification triggers, that is Speed, Volume and Threshold trigger where added values in the PRTG web UI would not be saved correctly in certain cases. It could happen that after you have entered for example a valid value for bit/second in the Speed trigger under Notification Triggers, that the value was saved afterwards with 0 or even an invalid float value. We also fixed this issue for the PRTG App for desktop.
Remote probes	We fixed an issue where not all probe Settings were displayed in the previous PRTG versions when you installed a new remote probe on your system. When you have added a remote probe successfully and opened the probe Settings tab you could see that, for example, the Credentials for Cisco Meraki were missing.
PRTG Administration Tool	We fixed an issue where the PRTG Administration Tool could not be opened on a remote probe with a 64-bit operating system in the previous PRTG preview version 24.1.93.1655. You would receive an error message Load of logging dll PaeAdvLog.dll failed with error code: The specified module could not be found in this case. The workaround was to open the PRTG Administration Tool directly from the folder as 32-bit version. The PRTG Administration Tool will now start correctly as 32-bit version when you open it on a remote probe with a system running on 64-bit. Please note that when you update from preview version 24.1.93.1655 to this version, the folder C:\Program Files (x86)\PRTG Network Monitor\64bit* still exists. We will deliver a fix for this issue with upcoming PRTG versions.

Fixed

Sensors

Oracle SQL v2	We fixed an issue for the Oracle SQL v2 sensor that reported an error The type initializer for OracleInternal.Common.ProviderConfig threw an exception when Oracle Data Access Components (ODAC) was installed on the system where also the sensor was added, e.g. on a remote probe. The sensor then went into an error state in this case because one of the Oracle assembly references did not match.
Sensor logs	The Result of Sensor.txt file will now be updated again when you have activated the Store result option for Debug Options in the sensor Settings. Updating the Result of Sensor.txt file did not work anymore in the previous PRTG versions for certain sensor types. This issue affected sensor types like Traceroute Hop Count sensor, Windows Print Queue sensor and Active Directory Replication Errors sensor, for example.
SNMP Memory sensor	We fixed an issue for the SNMP Memory sensor that reported the error message (value)' is not a valid integer value in certain cases. The issue occurred because certain devices falsely returned counter values instead of integer values for the storage size in the OID 'hrStorageSize' (1.3.6.1.2.1.25.2.3.1.5) what the sensor then could not process correctly.

Fixed

PRTG App for Desktop

Access rights

You can now acknowledge alarms with your read-only user in the PRTG App for Desktop when you have set the according rights for that user in the PRTG web interface before. Previously, when you have created a read-only user in PRTG and afterwards added additional rights Allow user to acknowledge alarms to that user, the settings would not automatically be updated when the user was logged in to the PRTG App for Desktop. As a workaround, you had to restart the Core server or the user had to log in to PRTG App for Desktop again.

Auto-Discovery

We fixed an issue where the execution of an auto-discovery with device template on the PRTG App for Desktop produced an access denied message in the CoreWebServer.log.

Note

Known Issues

PRTG application server

You will notice a higher CPU utilization on your system when you run the PRTG application server and when you update to this PRTG preview version 24.1.94.1355. As a workaround, please try to run your PRTG installation without the PRTG application server service. We will provide a fix for this issue in the upcoming PRTG versions.

Maps

Public map access reports the error message Map refresh failed when you update to this preview version 24.1.94.1355 and when you open a map that is configured for Allow public access in the map settings. You will have to log in with an administrative user account for an active user session to view a map with public access on this preview version. We are currently working on a fix for this issue.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 24.1.94.1355

sha256_exe DC820A6D77089B812C3CD6DA299D28202C4F1EABA80F3EBC3809B15FC03417A8
sha256_zip 9F5152C571297B9509B150E59110722E7AD477E625F58C5E1CDF8619946B590B

Lab

Multi-Platform Probe

Probe Adapter

With this PRTG version we introduce a new Multi-Platform Probe Connection Health (Autonomous) sensor that will inform you of the NATS server connection with your Multi-Platform probe and is created automatically when you have activated Allow multi-platform probe connections in the Core & Probes settings of your PRTG installation. The sensor comes with the channel NATS Connection state that has the lookup values Disabled, Connected and Disconnected. When you have disabled the setting for Allow multi-platform probe connections the sensor will display an according error message and return the value Disabled.

Please note that the sensor is in BETA status but you do not need to enable the BETA feature in order to get this sensor created. This sensor type only concerns the connection between Probe Adapter and NATS server.

Multi-Platform Probe Connection settings

We added the NATS Connection Security toggle in the Multi-Platform Probe Connection Settings to explicitly set the security schema used. The configuration for connecting the PRTG core server to a NATS server has changed. The schema is now an explicit toggle instead of encoded into the NATS URL. The NATS URL setting was changed to NATS Server Host, which is made up of the hostname and port of the NATS Server. After this update, the NATS Server Host setting will be reset to the default localhost:23561 value and users will need to reconfigure their NATS server.

Important for PRTG Hosted Monitor: This setting is not visible for PRTG Hosted Monitor instances. Customers will be informed separately, as soon as the multi-platform probe can be used with PRTG Hosted Monitor.

Lab

PRTG APIv2

API

We improved the error message that is returned when you try to pause a user via endpoint api/v2/users/ID/pause. In the previous PRTG Preview version 24.1.93.1655 the error message was The response received from the PRTG core server was invalid. The error message displayed now will match the error code 403 returned The requested action is not allowed with the user's current privileges.
We fixed an issue where the status info of a device was displayed when you have paused it before and now resumed it via POST request devices/id/resume. The status info would then display status:UP when you executed a GET request on devices/id. The status info will now only be displayed when you have paused a device.
The PATCH and POST endpoints can now handle incoming setting lookup values. For example, for the POST endpoint experimental/groups/{id}/device you can now send the discoverytypegroup for a device template.
We fixed an issue where executing the request via endpoint GET users/{userId}/api-keys resulted in a not found error message when you used a newly created API key that you created before in the PRTG classic web interface.

Improved

Various

All parts of PRTG

Various other minor fixes and improvements, updated user manual.

February 26th 2024 - Version 24.1.93.1655

Improved

Security

PRTG configuration file

Credentials like passwords in the PRTG configuration file are now masked when you use the option Include configuration file (contains passwords) for Send Logs to Paessler in the PRTG Administration Tool in order to send a support bundle. When you have a larger configuration file, e.g. 355 MB and run the PRTG Administration Tool as a 32 bit version, you will receive a message that PRTG was not able to hide encrypted passwords in the configuration file. The same behavior applies when you want to send a support bundle with a broken configuration file. You will then be asked if you still want to include the configuration file containing passwords or not.

Please note that currently is not possible to start the Administration Tool for a Remote Probe running on a 64-bit operating system. As a workaround go to the Program Files (x86) folder, open the PRTG Network Monitor folder, and run the 32-bit version of the Administration tool. We will deliver a fix for this issue in the upcoming PRTG versions.

Webserver

We fixed an open redirect which could potentially be used for phishing and other purposes. The severity is 4.3-Medium and calculated as CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.
We hardened PRTG against possible Cross-Site Scripting (XSS) attacks during Probe creation. The severity is 6.9-Medium and calculated as CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:N.

Improved

Server

Logging

You will now see a log entry in the History tab of a device when you have enabled or disabled the inheritance of an object. For example, if you enable the Inherit From feature toggle for Credentials for Windows Systems, it will be logged as Credentials for Windows Systems: Inherited in the History tab of the device.

Note

Sensors

Discontinued sensors with PRTG 24.1.94

With this version we discontinue the below already deprecated sensors:

Amazon CloudWatch sensors (announced as deprecated with PRTG version 22.3.78.1873)
Cloud HTTP sensor and Cloud Ping sensor (announced as deprecated with PRTG version 22.3.78.1873)
DNS sensor (announced as deprecated with PRTG version 21.2.69.1308)
REST Dell EMC sensors (announced as deprecated with PRTG version 21.2.67.1531)

If you run any of these sensor types they will show an error message This sensor type was removed from PRTG. For more information, see https://kb.paessler.com/en/topic/68227. (code:PE258), when you update your PRTG installations to version 24.1.94. You can pause existing sensors afterwards but you will not be able to deploy them anymore.

For further information about sensor deprecation and discontinuation in general as well as successor sensors and sensor alternatives please see our Knowledge Base articles: What do deprecation and discontinuation in the context of sensors mean? and What sensors are deprecated and what are their successors or alternatives?

Changed

Sensors

VMware Datastore (SOAP) sensor

We changed Bytes (File) to Bytes (Disk) in the Channel Unit Configuration of the VMware Datastore (SOAP) sensor to better match the size of datastores. Please note that this change will come into effect only when you add this sensor type as new and does not affect any existing sensors.

Fixed

Sensors

HTTP Transaction sensor	We fixed an issue for the HTTP transaction sensor that could not access a target URL anymore in certain cases and reported the error message String not found in the previous PRTG version, or when you changed to Compatibility engine in the sensor settings the error message was Object reference not set to an instance of an object.
Memory	We fixed an issue that could cause a higher memory consumption especially on the Multi-Platform Probe when you ran MQTT sensors and OPC UA sensors on your system. We therefore also updated our MQTT library to version 1.3.13 what patches several issues.
Microsoft Azure SQL Database sensor	Your Microsoft Azure SQL Database sensor will now report an according sensor message when the monitored single database or elastic pool is in a different state then Online or Ready. Previously, the sensor reported an error message The queried field "average,count,maximum,minimum,total" is empty. when, for example, the queried database was in status Paused.
QoS (Quality of Service) One Way sensor	The QoS (Quality of Service) One Way sensor now no longer displays any IP address in the Quality of Service Measurement section for Target Probe when you are about to create this sensor type. Previously, the sensor displayed 127.0.0.1 for the local probe what did not reflect the actual probe ID being used.
Sensor message	We fixed an issue where in certain cases the message reported by the sensor suddenly displayed only OK after some time. In these cases the message of the sensor was reverted from the original to OK when the message sent from Probe to Core contained an empty string for some reason. The issue occurred for sensor types like WMI Custom String sensor, SNMP Custom String sensor and REST Custom v2 sensor.
Sensor settings	We fixed an issue that occurred for certain sensor types, like the SNMP Custom v2 sensor, where an additional text overlapping the help box was displayed in the section for Schedules, Dependencies and Maintenance Window. Additionally the default dates for Maintenance Begins and Maintenance Ends were not displayed correctly.
SNMP HPE ProLiant Physical Disk Sensor	We fixed an issue for the SNMP HPE ProLiant Physical Disk Sensor that reported an error Disk: Required field, not defined when you added multiple disks where at least one disk was defective, e.g. did not report serial number and model values. As a result, the sensor could not be created and additionally the PRTG configuration file could also no longer be saved. You will now be able to save your PRTG configuration file again even if your SNMP HPE ProLiant Physical Disk sensor includes a defective disk.
Windows Print Queue sensor	We fixed an issue for the Windows Print Queue sensor that did not report the correct sensor message when monitored printers were offline or paused. The sensor wrongly reported the status message up in these cases.

Fixed

Server

API	We fixed an issue where in certain cases API calls to PRTG failed with the error Unauthorized although the API token was valid. For example, when you use the API endpoint /api/table.json to reach PRTG with a valid created API key, it could happen that the call resulted in an Unauthorized message.
Notifications	We fixed an issue for sms notifications that were cut off in the text when you used certain special characters, like for example ampersand &.
Maps	We fixed an issue where the public map display resulted in an empty window if a read-only user had access only to one object on the map. The issue occurred when the objects were linked with a connector and the read-only user had access only to one of these objects. When the map was opened in a separate incognito window with the option Public Access without login, it would only display an empty page, although the Security Context was set to the read-only user. Your public map display will now work properly again when you are logged in to PRTG with a user that has No access to the relevant map. Previously, when you opened a map with the link for Public Access and you were logged in to PRTG with a user that has No access under Access Rights for the map, the page would then display Map refresh failed, although the map was configured for public access.

Fixed

PRTG App for Desktop

Proxy server

You can now use Probe Transfer and Configuration Viewer in the PRTG App for Desktop when you have configured a proxy server under Probe Connection Settings in your PRTG installation. In the previous PRTG versions, the remote probe would not connect to the server if you enabled the Probe Transfer feature and if you had a proxy server configured on your PRTG installation. The beta feature Template Transfer for custom device templates from one PRTG server to another will now work as well with a configured proxy server.

Fixed

Paessler PRTG Hosted Monitor

Access Rights

We fixed an issue for Paessler PRTG Hosted Monitor where you could not change the Inherit From option for Access Rights when you right clicked on a probe in order to edit access rights from the menu. Instead of the Inherit From option you would see the message You need full access rights to view or edit access rights for this object. although you were logged in with a user that has administrative rights.

Fixed

WebGUI

Find duplicates

We fixed an issue for the Find Duplicates feature on /api/findduplicates.htm. Previously, if you selected the option Find Duplicates from the device Context menu the result you would have received was empty.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 24.1.93.1655

sha256_exe 5D7DCE05759533B8565B526E02245B9FA58B50F1AF28291C13EC13CFCC1BA3A9
sha256_zip AB3542D52EB8C4DFE7B50BEA1FE314259A9967FF9B93959D882D245C33068E9B

Lab

Multi-Platform Probe

Probe adapter

You will now need to configure the probe adapter connection to the NATS server through the PRTG web interface. You can set up your probe adapter configuration in the Core & Probes tab of the System Administration in the Multi-Platform Probe Connection Settings section. In this section you can choose the Multi-Platform Probe Connections, add a NATS Server URL, NATS Server Name, NATS Password, choose the NATS Server Certificate Authority Handling and finally choose the Connection Log Level where you can define the log severity level to determine which logs appear in the probe adapter log file. For this field you can choose one of the options offered from a dropdown menu: Error, Warning, Info (default), Debug, Trace.

Important: After updating to this version, any existing Multi-Platform Probes will be disconnected due to the new probe adapter connection. If you have previously used the Multi-Platform Probe you must configure your probe adapter via the PRTG web interface.

Lab

PRTG APIv2

API	We fixed an issue where it was possbile to pause a user via the endpoint api/v2/users/ID/pause. The user was successfully paused and was no longer able to log in. This issue did not affect the old APIv1. We fixed an issue for the devices/{id} endpoint where executing a PATCH request to rename a device was only changed in the basic section.
PRTG application server	We fixed an issue for the PRTG application server that ran into panic mode when you ran a mini probe on your PRTG installation, for example a Python Mini Probe or a PRTG Mobile Probe for Android. The created panic log would display the error panic: runtime error: invalid memory address or nil pointer dereference in these cases.

Lab

New UI

Device settings

You can now configure and manage your Credentials for Windows Systems in the device settings in the new UI and also via API v2. This enables you to use sensors on your device which require windows authentication, like WMI sensors. The available fields are Domain or Computer Name, User Name and Password. You can also see and manage the Inherit From toggle and enable or disable it. The windows credentials will also be visible in the new UI when you set them via APIv2 PATCH request on the endpoint /api/v2/devices/{id}. Additionally you are now able to edit the following device settings in the new UI and APIv2: Credentials for VMware/XenServer, Credentials for AWS, Credentials for Script Sensors, Advanced Network Analysis.

Mobile view

We improved the navigation in the mobile view for the new UI. When you click on the menu icon it opens a drawer from the left hand side. The drawer remains open during navigation and you can close it with the x button. Additionally, when you select home in the side bar, you will see links to the sections Welcome and Quickstart.

Improved

Various

All parts of PRTG	Various other minor fixes and improvements, updated user manual.
Sensor Languages	We updated the Spanish language files for certain selected sensor types.

February 6th 2024 - Version 24.1.92.1545

Fixed

Sensors

SNMP Trap Receiver and Syslog Receiver

We fixed an issue where the messages for the Syslog Receiver sensor and the SNMP Trap Receiver sensor were not displayed in the Messages and Sensor Overview tab after updating to the previous PRTG Preview version 24.1.92.1496.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 24.1.92.1545

sha256_exe 6A80FBA44973816AB1962A2FFC2E0284B9A506C5131C5BDA9B88CF41B248F80D
sha256_zip 851A3561978E08F25DB70506E12B26D28A9D416C5839EC4419FFEFBA900B15AF

Improved

Various

Languages

We updated the German and Spanish languages files.

January 23rd 2024 - Version 24.1.92.1496

New

Sensors

Cisco Meraki sensors	The Cisco Meraki License sensor monitors Meraki licenses of an organization and the Cisco Meraki Network Health sensor monitors the health of Cisco Meraki network devices. Both sensor types use the Cisco Meraki Dashboard API. We released these sensor types as experimental sensors with PRTG version 22.1.74.1869.
FortiGate VPN Overview sensor	This sensor monitors VPN connections of your Fortinet FortiGate firewall. The sensor shows the number of connected SSL clients, as well as the number of both up and down IPsec tunnels. We released this sensor type as experimental sensor with PRTG version 22.1.74.1869.
HTTP v2 sensor	This sensor allows you to send a HTTP request (HEAD, GET or POST) and use placeholders, similar to the REST Custom v2 sensor. We released this sensor type as experimental sensor with PRTG version 22.4.81.1532.
Local Folder sensor	The Local Folder sensor monitors a local folder on a probe system. We released this sensor type as experimental sensor with PRTG version 21.3.70.1629.
Network Share sensor	The Network Share sensor monitor a Server Message Block (SMB) or Common Internet File System (CIFS) network share. We released this sensor type as experimental sensor with PRTG version 21.4.73.1656.
Ping v2 sensor	The Ping v2 sensor comes with a new setting Inverted Error Status different to its predecessor. If you select Enable for this new setting, the sensor shows a Down status if the target device is reachable. The Ping v2 sensor supports IPv6. We released this sensor type as experimental sensor with PRTG version 22.4.81.1532.
Redfish Virtual Disk sensor	This sensor monitors the virtual disks of your Redfish capable servers and shows capacity and status. We introduced this sensor type as experimental sensor with PRTG version 21.3.71.1416.
SNMP Uptime v2	This sensor type comes with the same basic settings as the already existing SNMP System Uptime sensor including the additional Data Source setting under the section SNMP Uptime Specific, where you can select the object identifier (OID) the sensor gets its uptime from. The Data source is also depicted in the sensor status. We released this sensor type as experimental sensor with PRTG version 23.2.84.1566.
Soffico Orchestra Scenario sensor	This sensor monitors the status of processes within an Orchestra scenario. Please note that this sensor requires a Soffico license and as of Orchestra 4.8.2.5. We released this sensor type as experimental sensor with PRTG version 23.4.90.1299.

Improved

Security

API Keys

We improved the creation of API keys via API call requests to match the given access rights. Previously, it was possible to create an API key for a read/write user with the parameter accesslevel_new=full via GET request, although the user only has write access at the most according to the API key access rights settings. The Access Level for the created API key then wrongly displayed full access.

Web interface

We fixed an issue where an authenticated attacker could craft a specific request against the editlicense.htm endpoint and change the license of PRTG partially affecting the availability of PRTG. The severity is 4.3-Medium and calculated as CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

Fixed

Server

Historic Data reports	We fixed an issue for historic data reports that displayed not all or additional hours in the Date Time table when the user has set a different time zone under My Account in the PRTG Web Interface. For example, when your time zone in your account was set to (UTC -6:00) and you ran a historic data report for 12 hours, the report would in this case substract the hours in the Date Time table from the UTC time zone set under your account.
Logging	We fixed an issue where in certain cases the Core.log reported the following errors failed loading MQTT transport library: The specified module could not be found or failed loading OPC transport library: The specified module could not be found. Sending test OPCUA Publish notifications or MQTT test notifications also resulted in an access violation in these cases. The issue occurred in the previous Preview version 23.4.91.1566 because internal notification dependency was updated to use a higher OpenSSL version then the PRTG installer provided.
Lookups	We fixed an issue for lookup files where changes were not reflected in the web interface when you changed values in lookup files after OID library creation. Changes to lookup values were only displayed after a complete PRTG core server restart. The issue affected for example the SNMP Library sensor, but also other sensors that come with value lookups and appeared only for the first modification in the lookup file.
Maps	We fixed an issue for public maps where the map access failed with the error message Map refresh failed in certain cases. The issue occurred for read-only users that had Read Access to a public map in the according PRTG User Group but different security contexts, for example No Access, for objects in a public map. Public maps are now displayed for read-only users but only show the objects the read-only users have access to according to the security context.

Fixed

Sensors

AWS RDS v2 sensor

Your AWS RDS v2 sensors now display the correct values for the channel Database Connections again. The sensors displayed a wrong amount of connections in the mentioned channel with PRTG stable version 23.4.90.1299 since the sensors pulled the metric for 'SUM' and not 'AVG' (average) for Database Connections.

Add sensor

We fixed an issue for certain sensors on addsensor.htm that could be added although the device or group to which you want to add these sensor types did not have corresponding credentials. When you tried to add an AWS sensor, for example, to a device without Credentials for AWS, you received an error message Sorry, the scan for available monitoring items has failed! The AWS sensors will now be displayed as inactive on addsensor.htm with a hint that valid credentials are needed when you try to add them to a device without Credentials for AWS. This issue was also fixed for the Local Folder sensor (BETA) and the Network Share sensor (BETA).

Fixed

WebUI

Device tree

We fixed an issue that occurred when you renamed a device or group via context menu in the device tree that contained Credentials for Microsoft 365. The error message was The validation of the data you entered has failed and settings could not be saved when you tried to rename the device or group with right click on edit and rename. The issue also occurred when you tried to edit the access rights in the device tree in these cases.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 24.1.92.1496

sha256_exe 4F913065EF4AA1E4EC5044B2172287CAA1EBD34D800ED5B780BE3834493AFC54
sha256_zip 79AEA259FA7B5D6990E8B98E185E9195D213CC163F3E8745245ED680799C6AE8

New

Multi-Platform Probe 0.19.0

Second beta release

The Multi-Platform Probe enables you to deploy probes on platforms not supported by the Remote Probe, including various Linux distributions and ARM hardware. In this latest release, we provide TLS support, ensuring a secure and encrypted connection to the NATS server. Additionally, we've included a user-friendly setup wizard for the NATS server, streamlining the installation and configuration process.

For more information about the Multi-Platform Probe please see our Knowledge Base article: What is the Multi-Platform Probe and how can I use it?

For detailed release notes please see our Knowledge Base article: What are the release notes for the Multi-Platform Probe?

Lab

Sensors

Script v2 sensor

We improved the security for the usage of Python scripts with the Script v2 sensor. All PYTHON* environment variables that might be set, like PYTHONPATH or PYTHONHOME, will be ignored when you execute scripts with the Script v2 sensor by using the parameter -E. This parameter prevents that a different e.g. PYTHONPATH is set and that Python scripts with potential security issues are run in the Python script directory.

SNMP Uptime v2

We fixed an issue for the SNMP Uptime v2 (BETA) sensor that displayed wrong values in the Live Data section of the sensor in the System Uptime channel. The issue occurred when you added the sensor to your PRTG local probe, however, it displayed the correct values when you have added it to your Multi-Platform Probe.

Lab

New UI

Mobile view

We introduced a new header for PRTG in mobile view where the menu is positioned on the top left side. The parent breadcrumb will be displayed on the top right side. The main page title Home was removed.

Web interface

We fixed an issue where redirects from the classic web interface led to application errors because the wrong endpoint was called when you clicked on the Open New UI button in certain cases.
You can now manage the inheritance feature toggle on the device Settings tab under Credentials for Windows Systems. When the inheritance toggle is enabled, the active values of the inheritance source are displayed and otherwise, when disabled, the active values of the device are shown. Please note that it is not possible to change the field values yet at the current implementation status.

Lab

PRTG API v2

API

You can now update the inherited value for Credentials for Windows Systems under device Settings with an according PATCH request for the devices/{id} endpoint.
We fixed an issue where executing a GET request resulted in a not found error message when you used a newly created API key that you created before in the PRTG classic web interface. When you executed a GET request, for example, via /devices/{id} endpoint and authorized with a newly created API key first, the response would be not found on the first try. The second execution of the request would then be successful.

PRTG application server

We fixed an issue for the PRTG application server that in certain cases reported a 503 License Invalid error when you performed a GET request, e.g. GET /api/v2/devices with an according API key. The issue occurred when the PRTG application server was not connected to the PRTG core server.
We fixed an issue where the PRTG application server stopped working in certain cases. You could observe that the PRTG application server created a panic.log with the following error message panic: runtime error: invalid memory address or nil pointer dereference in these cases.

Improved

Various

All parts of PRTG

Various other minor fixes and improvements, updated user manual.

January 10th 2024 - Version 24.1.91.1583

Important

Security

Webserver Security

CVE-2023-51630 - ZDI-CAN-21182: An XSS vulnerability was identified through the htmclass parameter in the error.htm in PRTG 23.4.90.1299 and earlier versions where an attacker could bypass the authentication by creating a malicious link and luring a PRTG user with an active session to click it. The severity of this vulnerability is high and received a score of 8.8, (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). For further information, please refer to ZDI-24-073 and CVE-2023-51630

We would like to thank n1nj4sec for working with Trend Micro Zero Day Initiative and responsibly reporting this vulnerability.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 24.1.91.1583

sha256_exe AEE966E4F54C66FBC6EADD270D4D232CA2FD571C0104878C9C418206C4669DAB
sha256_zip C8911EE97AAED3519365CB0A095214D92B7AF6BCC37F841CCD8FFB71D7918393

December 7th 2023 - Version 23.4.91.1566

Improved

Security

Webserver

We fixed a reflected XSS vulnerability which allowed JavaScript injection. The severity is 6.1-Medium and calculated as CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Improved

Server

Notifications	We added the option for SNMP Trap notifications to include the sensor ID that triggers the notification in the trap message. If you select the option Include sensor ID in the Send SNMP Trap notification template, PRTG will send it on the OID 1.3.6.1.4.1.32446.1.1.5. Previously, parsing the sent trap messages was not possible for certain third party systems due to the missing option.
Update to OpenSSL 1.1.1w	To ensure secure communication furthermore we updated to the OpenSSL version 1.1.1w.

Fixed

Server

Contact Support	You can now send support bundles with the Contact Support option when you have configured a proxy server in the PRTG Core & Probes settings. Important: The issue still appears in the Paessler PRTG app for desktop.
Change Password	You will now receive a proper error message Error (Bad Request) again when you enter an invalid (old) password under My Account in your Account Settings. In the previous PRTG version there was a log entry in the Core webserver log Error: The validation of the data you entered has failed, but no corresponding error message in the web interface. The issue occurred when you selected the option Specify a new password and entered an invalid Old password.
Device List	We fixed an issue that caused the inheritance to be disabled for all settings of a device if you changed settings in the Device List before. The issue occurred when you selected several devices in the Device List via Settings option in the multi-edit and saved the changes. The settings of the devices where you made the changes for were set to disabled in the Inherit From toggle.
Libraries	We fixed an issue for an unauthorized Ajax error that occurred in certain cases in the CoreWebServer.log instead of displaying the correct error message Your user account is not allowed to access this information. The issue happened when you were logged in with a user account whose assigned user group has write permissions on a library but who is not allowed to access user information when you clicked on the Security Context link for the user to see the User Account Settings.
Maps	You can again change the background image of a Map in the Map Settings. If you changed the background image of your map and saved the changes, the map would still display the old image as the new one was saved under an incorrect map ID in the previous PRTG version.
Reports	You can now sent reports by email again for scheduled reports in the Report Schedule setting. Previously, when the report schedule sent out an email to a configured email address or PRTG user group you would receive an access violation in the Core.log and in certain cases also the message Error sending Report Email. The issue occurred if you selected a schedule for a report in the Report Schedule setting with Target Email Address and/or Email to User Group.
PRTG Installer	We fixed an issue where PRTG stored the data for the Installation Path in the same folder as for the Data Path when you selected to run the PRTG installer in the Custom mode for fresh installations since PRTG version 23.3.88. The issue happened when you changed the Data Path directory in the path field directly.
Scanning Interval	We fixed an issue where you could not save your Scanning Intervals in certain cases when you used a regular interval and a UTC interval with the same unit. For example, if you entered 4h and @UTC 4:00 at the same time in the Available Intervals section you would receive a validation error upon saving your changes.
Remote Probes	Your remote probes that you have deleted from the device tree will no longer appear on your PRTG Status Page under the Probes and Database Objects sections, or in the information returned when you execute a query on PRTG Health System Information via an API call /api/health.json?. In the previous PRTG version, a deleted remote probe would still be displayed on the mentioned sections with the status disconnected.

Fixed

Sensors

AWS sensors

We fixed an issue that caused the environment variable AWS_EC2_METADATA_DISABLED to be leaked into the environment of other sensors. For example, it did not work in cases when you had PRTG installed on an AWS environment and ran a script with a Python Script sensor that pulled credentials from an API although the role on AWS allowed PRTG to authenticate with an AWS SDK. The environmental variable was set to AWS_EC2_METADATA_DISABLED=TRUE in this case.

Veeam Backup Job Status Advanced sensor

Your Veeam Backup Job Status Advanced Sensor is now able to display the correct value for the channel Job Scheduled when the scheduled job has been disabled. The channel Job Scheduled will now display the value No where previously the channel would have displayed the value Yes.
For more information please see our Knowledge Base article:https://kb.paessler.com/en/topic/89136 .

Fixed

Web GUI

Historic Data Tooltip

TWe fixed an issue where a second tooltip icon with tooltip text was displayed in the section Percentile Handling in the Historic Data Tab of a sensor. You could observe this behavior when you selected the radio button for Show Percentiles. The second tooltip would be displayed for Percentile Averaging Interval.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 23.4.91.1566

sha256_exe FD3547279F0DB6DEDD2F73A08BBE0B6092D2AC266EF1C3868E9C88F8917CF950
sha256_zip 7AF90EEE6A2C60BD3AA7AF4C02B689590C8C82E62D4C0664AFC9FABDE466CF29

Lab

Sensors

Redfish Virtual Disk sensor

The Redfish Virtual Disk sensor (BETA) is now able to handle disks that have one of the following states: Enabled, StandbySpare, InTest, Starting, Quiesced, Updating and Qualified. Previously, the sensor could handle only the state Enabled and would display the status offline for all other states.

Lab

PRTG API v2

API	We fixed an issue where only one device template was returned in the settings even if there were multiple device templates for auto-discovery assigned to a device when you executed a GET request with /api/v2/experimental/devices/{id}/settings. This issue also affected the former APIv1 via /api/getobjectproperty.htm. We fixed an issue that occurred when you sent a PATCH request to /devices/{id} endpoint in order to set the IPv4 host of a device. If you sent a GET request to /devices/{id} in order to check if basic.host is set to 127.0.0.1, you would notice that the host option was not set correctly. The issue happened when you created a device in the classic web interface in PRTG before with the IPv6 Hostname set without the IPv4 or a IPv4 Hostname given. We made several changes for the experimental endpoint. We added the sortIndex field and sections and settings are not sorted anymore by the appserver. Default values like false for boolean or empty strings are omitted in the response. Fields for read only users are now masked in the endpoints /devices/{id}/settings and /devices/{id}, for example the Credentials for Windows systems. In the previous PRTG version, those setting fields were not masked when you logged in with a read only user to the appserver and executed a GET request on a device with all settings included. We fixed an issue where the parent tag of a device was not returned when you executed a GET request for the api/v2/devices endpoint. For example, if you added a tag to a specific group to which the device was added and requested the device details via endpoint afterwards, the parent tag for that device was not returned in the response. We fixed an issue for the Create Device endpoint /api/v2/schemas/device?purpose=create&parent=1 that resulted in 404 NOT FOUND error although the API call was on a valid schema.
Devices	You can now create a device under a group or local probe via API v2. You can create a device by sending the according POST request on the endpoint experimental/groups/{id}/device in the Swagger UI. The device will be created on group level. For a device on probe level you need to use the endpoint experimental/probes/{id}/device. Read-only users are now able to see information of the Credentials for Windows Systems settings of a device via the /devices/{id} endpoint. The available information is if the Inherit From toggle is activated or not and where the data is inherited from.
Security	We fixed an issue where it was possible to escalate privileges for API-Keys.

Lab

New UI

Web Interface

Automatic Logout: You will now be logged out automatically after a certain period of time in the new UI when you have activated the setting for Automatic Logout in the classic web interface. In the previous PRTG version you received an unknown error for the automatic logout process in the new UI and also the Stay logged in button did not work. You will now also receive a proper message on the login page when you were logged out automatically: You have been logged out due to inactivity.
Color mode: We fixed an issue where the Color Mode (Light or Dark mode) selected by a user under My Account was not applied when the user logged in to PRTG.
Delete device: You will now see a proper dialogue displayed when you delete a device via context menu. We improved the text to The object including all subobjects will be deleted. There is no way to undo this operation. The dialogue also displays the subobjects that will be deleted with that action.
Device icon: You can now change the device icon for your device in the settings for Additional Device Information. A selection of device icons opens when you click on Select Device Icon.
Page refresh: You can now manually reload a page within PRTG with the refresh button in the footer. The refresh timer will then start again from the beginning. You can also pause and resume the page refresh with the button in the footer.
Monitoring: We added an alternative Sunburst view to display and navigate monitoring objects on the left side of the split screen. You can change the display of your monitored objects in the View Settings and switch now between Tree and Sunburst view.
Split view: We improved the horizontal space in the split view to use space more effectively for subpages with narrow content (Device List, Info, Settings, Graphs).
User rights: Read-only users are now able to see the Credentials for Windows Systems in the device settings. You will see the information in the Inherit From toggle where the credentials are inherited from when you are logged in as a read-only user. The credentials for Domain or Computer Name, User Name and Password are masked.

Improved

Various

All parts of PRTG	Various other minor fixes and improvements.
Sensor Languages	We updated the German and Spanish language files for certain selected sensor types.

October 24th 2023 - Version 23.4.90.1279

Improved

Sensors

Microsoft Azure

You can now add the following sensor types to your device template when you select the function Create Device Template in the device tree: Microsoft Azure SQL Database sensor, Microsoft Azure Subscription Cost sensor, Microsoft Azure Virtual Machine sensor and Microsoft Azure Storage Account sensor. This enables you to create these sensors afterwards with the option Run Auto-Discovery with Template. Please note that these sensor types require an Azure custom role with specific permissions. For more information please see our Knowledge Base article: https://kb.paessler.com/en/topic/88625.

Fixed

Server

Access rights	We fixed an issue that affected the creation of Reports, Notification Templates and Schedules when you were logged in as a user with read/write access. When you were logged in as a read/write user, you would get an Unauthorized ajax error when you tried to create a Report, Notification Template or Schedule. However, the creation was successful in the background and visible to PRTG users with administrative rights afterwards.
API Keys	We fixed an issue where the created API key for an active directory user was still valid for a certain period of time even though the active directory user was deleted. Previously, when you created a new user in your active directory and connected it with your PRTG installation and also created an API key for this user, the API key would still be valid for a while even the login credentials were not when you deleted the user afterwards. The API key is now promptly invalid like the credentials when you delete the user from your active directory.
Reports	You can now create Historic Data Reports in the Historic Data tab for sensors as .csv file format again with the setting for show percentiles activated. Previously, the historic data report would run into an Ajax Error: timeout when you selected the format .csv file and additionally selected the radio button for show percentiles.

Fixed

Sensors

Microsoft 365 Mailbox sensor

You can now again save changes in the sensor Settings of your M365 Mailbox sensor. This did not work before in the previous PRTG version 23.3.86.1520. Previously If you had changed the sensor settings and tried to save them, you would have received an Unauthorized ajax error message, the site page would have reloaded, and the settings would have reverted to the previous state. You could have saved the settings initially when you added this sensor type as new sensor during the creation process.
We fixed an issue where you could not add the Microsoft 365 Mailbox sensor to your PRTG when it inherited credentials given under Credentials for Microsoft 365 from Root group. PRTG would report the following in this case PRTG Network Monitor has encountered a problem. Your last request could not be processed properly. You could also observe the following entry in the CoreWebServer.log: Error: The request cannot be processed because the object ID is missing.

OPC UA Server Status sensor

We fixed an issue for the OPC UA Server Status sensor that reported the following error message in certain cases: The sensor could not connect to the OPC UA server (BadConnectionClosed). The issue occurred because the endpoint selection changed with an update of the library open62541 that is used by OPC UA.

Changed

Sensors

Windows IIS 6.0 SMTP Received, Windows IIS 6.0 SMTP Sent

We renamed the sensor types Windows IIS 6.0 SMTP Received sensor to Windows SMTP Service Received sensor and Windows IIS 6.0 SMTP Sent sensor to Windows SMTP Service Sent sensor to meet the technical requirements.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 23.4.90.1279

sha256_exe D98BA9B1145A19753A4C23998EAE0190051162402D42B7790F41512C9B4B79FF
sha256_zip 38F43D54C43F9D96F40A53284F0CB16D541399FD5AC307E5B8BE9AC14D7D994F

Lab

Sensors

Local Folder Sensor and Network Share Sensor	You can now add the sensor types Local Folder Sensor (BETA) and Network Share Sensor (BETA) to your device template when you select the function Create Device Template in the device tree. This enables you to create these sensors afterwards with the option Run Auto-Discovery with Template.
Script v2 sensor	You can now create the Script v2 sensor (BETA) when you execute the Run Auto-Discovery with Template function on a device. The sensor will be created only when you have Python installed on the probe system.
SNMP Disk Free v2	We fixed an issue for the SNMP Disk Free v2 (BETA) that displayed wrong values in certain cases when you updated to PRTG version 23.3.88.1393. The issue occurred in cases when you monitored disks with a larger volume. The sensor then reported wrong values like 0% for the percentage channel Free Space and went into error status. Additionally, the absolute values in the channel Total were displayed as negative. The issue happened because the value calculation in the sensor was exceeded by the large values and the sensor could not handle the value overflow correctly.

Lab

New UI

Channels	We fixed an issue for the Last Value column in the new UI that displayed 0% as difference value. The Last Value column now no longer show a difference value of '0' in the sensor channel list when the value is 0% as difference between Warning Limit and Last Value.
Device Settings	You can now search for device tags by adding the tag you want to search for, to the search field in the Device Settings tab.

Improved

Various

All parts of PRTG	Various other minor fixes and improvements.
Sensor Languages	We updated the Chinese, German, French, Japanese, Portuguese, Russian and Dutch language files for certain selected sensor types.

October 12th 2023 - Version 23.4.89.1539

Important

Security

Webserver

We fixed a path traversal vulnerability in the PRTG Webserver that could be leveraged without authentication. The vulnerability can be tracked under CVE-2023-45858.

More information will be available as part of a staged disclosure process, for updates please see our Knowledge Base article https://kb.paessler.com/en/topic/91880.

Fixed

Server

Installer

We fixed an issue where the last PRTG Preview version 23.4.89.1500 could not be installed successfully in rare cases. You could see the error log entry with the message Verify Error (could not initialize openSSL Library) in the PRTG Server Install Log in this case.

The issue could happen if you had no vcruntime140.dll for C++ runtimes installed which is required by the PRTG installer due to an internal change within PRTG Preview version 23.4.89.1500.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 23.4.89.1539

sha256_exe 90ADC873E5A3A1A353194F98B804E890AFC45284C5880970778B2C37DA2323F6
sha256_zip 36A512466C9AC041E113844D0293319E4079CB6914F34A6543BEEEE4053E82D5

Improved

Various

Languages

We updated the Dutch languages files.

October 5th 2023 - Version 23.4.89.1500

Improved

Security

Forgot Password

The reset token in the link for setting a new password is now masked in the CoreWebServer.log. It was logged in a readable format before when you clicked on the link for setting a new password with the forgot password option.

Improved

Sensors

Exchange Database DAG (PowerShell) sensor	Your Exchange Database DAG (PowerShell) sensor now recognizes newer versions of Exchange Server (>2019) and can distinguish between versions i.e 2010, 2013, 2016 and 2019. Previously the sensor recognized the Exchange Server 2019 version as an older version and tried to use this information, resulting in a Warning status for the Active Copy Channel with the message Could Not Read Activation Preference.
EXE sensors	We updated our database connectors for certain EXE sensor types, e.g. Oracle SQL v2 sensor, MySQL v2 sensor and PostgreSQL sensor. Previously, the connection to the corresponding databases failed due to required encryption ciphers that did not match.
Proxy Settings	We improved the following sensor types to support the Proxy Settings in the device settings so they are able to use a HTTP proxy server when you have set up one in the device settings: AWS v2 sensors Cisco Meraki (BETA) sensors Cloud HTTP v2 sensors Cloud Ping v2 sensors Dell EMC sensors FortiGate sensors HPE 3PAR Common Provisioning Group HPE 3PAR Virtual Volume HTTP v2 (BETA) sensors Microsoft 365 Microsoft Azure NetApp sensors Redfish sensors REST Custom v2 (BETA) sensors Soffico Orchestra sensors Veeam sensors Zoom Service Status sensor
OPC UA Custom sensor	Your OPC UA Custom sensor now supports more data types, that means enums and single values from array-valued variables. Previously, the sensor supported only string, Boolean, and numeric variables.
Soffico Orchestra sensors	You can now create device templates that include the sensor types Soffico Orchestra Channel Health sensor and Soffico Orchestra Scenario sensor (BETA). This enables you to add these sensors via auto-discovery.

Changed

Sensors

MySQL v2

With this PRTG version the MySQL v2 sensor does not support the integrated Windows authentication for MySQL anymore due to a license change in the database connector. The sensor will request the Windows password and username instead.

Fixed

Server

Scanning Interval	We fixed an issue for certain selected sensor types that caused the previously set scan interval to be ignored and always run for the default value of 60 seconds. In addition, the interval information was not added to the sensor log in cases where the Store result option was enabled under Debug Options in the sensor settings.
Map rotation	Public map rotation is now working again as expected. Previously, if you used the public map rotation feature without login credentials required, only the first map would be displayed or the other maps would be displayed as blank pages instead.

Fixed

Sensors

AWS sensors	We implemented various improvements for the AWS v2 sensors: You can add the AWS Alarm v2, AWS RDS v2, and AWS ELB v2 sensors again as expected even if services in a region cannot be accessed. In rare cases the sensor failed with the error message You are not authorized to perform this operation. We fixed an issue for AWS sensors that could not be created when you ran an auto-discovery via device template. Adding the sensors with auto-discovery now works again as expected. AWS EBS v2: We improved the wording of an error message text when the ID of the AWS EBS volume that this sensor monitors is not found. The error message displayed in the Down status of the sensor is No volume with the ID x was found.
EXE sensors	We fixed an issue for certain EXE sensor types, such as the ADO SQL v2 sensor, where the parsing for arguments failed when the Connection String in the Database Specific setting contained a linebreak. The sensor reported a down status with the message Invalid Authorization Specification in these cases.
Microsoft Azure sensors	We generally hardened the approach how Microsoft Azure sensors retrieve data to avoid gaps in the sensor data.
MySQL v2	We fixed an issue for the MySQL v2 sensor where the executed SQLV2.exe client tool reported an error with the message Parameter -sslmode is missing. With PRTG version 21.2.68.1492 we introduced a dedicated setting for the SSL mode; however, this setting was initially only implemented for the Command Line Interface. The options you could choose are the same as the values of the MySQL sslmode parameter.
Netflow sensors	We fixed an issue for certain Flow sensors, like the NetFlow v9 sensor or IPFIX sensor, that led to access violations in certain cases when the data flow contained fields with variable length.
SNMP HPE ProLiant Memory Controller sensor	We fixed an issue for the HPE ProLiant Memory Controller sensor that in some cases could not be created on a HPE ProLiant Gen10 server when the device type was 1 (other) in the given OIDs. An error with the message The sensor could not find any matching data on the monitored device occurred in these cases during sensor creation.
SMTP sensor	We fixed an issue for the SMTP sensors where the HELO ident that you configured in the Authentication setting of the sensor was ignored and instead e.g. the default hostname of the probe was used. This issue affected the SMTP sensor, SMTP&POP3 Round Trip sensor and the SMTP&IMAP Round Trip sensor.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 23.4.89.1500

sha256_exe CC78F916CE069F05269A57EBED78121251BE9DAE61B7B0CC17D4060075507205
sha256_zip B8A575341644CAC08F1184B73A14A8D542E2B8AE029B3C63BAF77ED2988DAE75

Lab

Sensors

SNMP Traffic v2 sensor	Your SNMP Traffic v2 sensor now includes the tag snmp in the default tags that are automatically predefined in the Basic Sensor Settings when you add the sensor.
Soffico Orchestra Scenario sensor	You can try out our experimental Soffico Orchestra Scenario sensor that we introduce with this PRTG version. This sensor monitors the status of processes within an Orchestra scenario. The sensor comes with the channels Aborted Count, Downtime, Finished Count, Paused Count, Running Count and Warning Count. Please note that this sensor requires a Soffico license and as of Orchestra 4.8.2.5.

Lab

PRTG API v2

API v2

We added a new parameter purpose to the /schemas/{kind} endpoint that supports the values create (for POST), update (for PATCH) or read (for a GET endpoint). The endpoint returns the appropriate schema for a given purpose.

PRTG application server

The PRTG application server now calculates inheritance information of a device only in cases when the information is needed to avoid unnecessary CPU cycles. This applies when you request device settings via GET request /devices/ID/settings.
We fixed an issue where the PRTG application server service crashed in certain cases what led to the Core.log growing exponentially with log messages ctorConnectionOutgoingThread.Execute message not sent through TPaeTalkProtocolBuffersServerTCP. A short-term workaround was to reboot your system. The issue happened mostly for larger installations and was due to a TLS connection timeout.

Lab

New UI

Device settings	The option to edit the IPv4 Address/DNS Name and IPv6 Address/DNS Name in the Device setting for the Probe device is no longer displayed. You can now see the parent Tags via the Parents Tags field that this device inherits from its Parent Group and Parent Probe, which are displayed in the Device Settings. You can now add and remove custom and existing Tags via the Tags field under the Device Settings. You can confirm each tag with the Spacebar key, a comma, or the Enter key. You can now select a device icon for your device via the Select Device Icon field in the Additional Device Information section. Please note that for the moment the icon change is not reflected in the device tree. When you edit a section in the Device Settings and save your changes the sections will retain their expanded or closed behavior after you click Save Changes.
Maps	We fixed an issue that occurred when you deleted devices that were included in a map. Previously after you deleted devices in the new UI that were included in a publicly accessible map you would receive the warning message Monitoring might be incomplete or inaccurate due to fundamental problems in your PRTG installation! Click here for more information! when you opened the map then in the classic UI. In addition, the Core Health sensor displayed a down status with the error message Free Physical memory is below error limit of x in Free Physical Memory. The public access page for the map was also not accessible and reported the error Map Refresh Failed in these cases.
URL parameter	The URL will again reflect the sorting parameters e.g tables?sort_identifier=status&sort_direction=ASC when you sort by Status in the Channel list of a sensor. The URL will again reflect the sorting direction parameters e.g /devices?sort_direction=ASC{}* when you sort a device list by clicking on the Toggle sort direction button.

Improved

Various

All parts of PRTG	Various other minor fixes and improvements.
Languages	We updated the Chinese, French, Japanese, Portuguese, Russian language files.
Sensor Languages	We updated the Spanish language files for certain selected sensor types.

September 13th 2023 - Version 23.3.88.1385

Fixed

Server

Error messages

PRTG shows the error dialog Error (Bad Request) in the web interface again when you attempt to save invalid changes to settings. Previously, the error description was not displayed. The page reloaded without any indication when you tried to save your changes with invalid settings. The error was only logged in CoreWebServer.log.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 23.3.88.1385

sha256_exe D189266B7DD3B4A221760EA7A9C12F55ABEC15328A1E060ACB51BCB2E0011E3E
sha256_zip 6ACE2D9DF16985D9B5F9A45A1466772395D8635ED2BBD56DF9F19B2134CA544F

Lab

PRTG API v2

PRTG application server

The CPU usage of the PRTG application server is on normal level again. In the previous PRTG 23.3.88 preview versions, it caused unnecessary high CPU load on the server.

September 6th 2023 - Version 23.3.88.1359

Fixed

Server

Remote probe update

We hardened the mechanism for the automatic update of remote probes in PRTG with this PRTG version. Previously, sometimes remote probes required a manual update after you auto-updated your PRTG server with a new version due to a connection issue. Please note that this change will take effect when you update from PRTG 23.3.88 to the following version, not immediately after updating to this PRTG version.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 23.3.88.1359

sha256_exe 79A8553243FA0CB69F53303911A527C5B918494CF325850E6FC0BB15F874BD0D
sha256_zip DA3CBB69C0E4AD3D79566EC81511CB653EA9AF810AC59EE2B10F5E8E2A6D7D82

Improved

Various

Languages

We updated the German and Spanish language files.

August 30th 2023 - Version 23.3.88.1319

Improved

Sensors

AWS EC2 v2 and AWS RDS v2 sensors	Your AWS EC2 and AWS RDS v2 sensors will show a warning message if the limit of the channel CPU Credit Balance limit has less than 1 credit available. Previously the sensors were showing an error status. Please note that this change applies only when you add this sensor type as new sensor.
MQTT Subscribe Custom sensor	We added two new options in the MQTT Specific settings of the MQTT Subscribe Custom sensor for a better message handling. The option Add duration since last message will set a threshold alarm that will notify you when no message was received. Previously, the sensor went into unknown status before when no message was received in the scan interval. This default behavior will remain if the setting for Add duration since last message is not enabled. The option Retain last sensor value keeps the last message on the live charts and allows you to monitor specific JSON values of the payload.
SNMP Buffalo TS System Health Sensor	Your SNMP Buffalo TS System Health sensor is now able to display an additional status for the channel Firmware Update Available. Previously, the status was not included in the lookup file and therefore displayed an error with the message undefined lookup value (3) when the value 3 was sent to the sensor. The value 3 in this case represents the status latest.

Fixed

Server

Cluster Setup	We fixed an issue that caused the Failover node to become unreachable when you added a new contact to the Notification Contacts settings of the Master node.
Dependencies	We fixed an issue where dependent objects, like sensors and devices, were not paused if the configured master sensor went into error status due to exceeded limits. When you configured the sensor under Dependency Type as Master sensor for parent then the issue occurred in rare cases when the sensor was not saved to the device tree while the limit status changed. The issue only affected newly created sensors.
Libraries	You can now create libraries again when you are logged in as a user with read/write access. This did not work before in the previous PRTG version 23.3.86.1520 when you were logged in as a read/write user that has full access in the according user group. You would get an Unauthorized ajax error message for adding a new library before.
Notifications	We fixed an issue for the notifications template Send Syslog Message where the message contained a wrong character (?) at the beginning, regardless of the format (ANSI, UTF-8) you selected before. We fixed an issue in the delivery of sms notifications that occurred in cases when you used NowSMS service as an sms endpoint for PRTG. The delivery of sms notifications was delayed in these cases in the previous PRTG version.
Probe connection	We fixed an issue where in certain cases the probe service stopped working and caused the probe to disconnect from the PRTG core server. The probe service then reported a high CPU usage in these cases and sometimes access violations were logged in the PRTG probe.log additionally. The issue was probably caused by the DNS v1 sensor that we declared as deprecated with PRTG version 21.3.69.1333 and which was replaced with its successor DNS v2 sensor. For more information about deprecated sensor types and their alternatives please see our Knowledge Base article: https://kb.paessler.com/en/topic/89505.
Scanning Interval	We fixed an issue in the Monitoring settings for the Scanning Intervals section. You can now enter multiple scanning intervals again with the format of Coordinated Universal Time (UTC) points, like @ UTC hh:mm , hh:mm. Previously intervals with the "@ UTC" format were treated as duplicates and the entries could not be saved. Please note that you have to enter different time periods in the scanning intervals when you add multiple intervals in the UTC format. Note:The input validation still incorrectly fails when you add a UTC at a full hour that is already set as hourly scanning interval. For example, @ UTC 06:00 fails to save when there is already a scanning interval with 6h while @ UTC 06:01 would work in this case.

Fixed

Sensors

Add sensor	We fixed an issue for certain sensor types that ran into the error no available in the Specific settings of the sensor during sensor creation. The issue happened when a timeout value higher than 300 was set in the registry for the initial sensor scan when you added the sensor. Sensor types affected were Microsoft 365 Service Status Advanced, Veeam Backup Job Status Advanced sensor, for example.
Beckhoff IPC System Health sensor	The Beckhoff IPC System Health sensor now supports IPv6 as IP Version connection that you can configure in the Basic Device Settings under IP version of the monitored device. The sensor appeared under Sensor types that are not IPv6 compatible in the previous PRTG versions due to a missing compatibility flag in the sensor library.
Custom sensor channel names	We fixed an issue for custom sensor types, like the HTTP Push Data Advanced sensor, where channels were created as duplicate when there was a trailing whitespace behind the relevant channel name. The issue occurred after a PRTG core server restart. The whitespace was removed and since it did not match the previous channel name, the sensor would create a duplicate.
HTTP sensors	We fixed the handling of HTTP methods that are returned after a redirect to follow the Post/Redirect/Get (PRG) pattern. This prevents the contents of the original POST to be resubmitted by redirecting the client to another location. If you select the Request Method POST, for example, under the HTTP Specific settings of the sensor, then the first request will use this method. If a request is redirected, all further requests will use GET. Redirects of requests that use GET and HEAD will continue to use GET and HEAD, respectively. This change affects all HTTP based sensor types, like the HTTP sensor and HTTP Advanced sensor.
Microsoft Azure	Your Microsoft Azure sensors now query data in a slightly longer time span to make sure data is returned from Microsoft Azure and that every time stamp is considered. Previously, it could happen that Azure did not return any value when the queried time span was too close to the present as it would query only the most recent one and not also the latest data. Note: The Microsoft Azure SQL Database sensor will throw an exception in case no result is returned from timeseries. Microsoft Azure Storage Account and Microsoft Azure Virtual Machine sensors return default value = 0 in case no result is returned from timeseries.
NetApp I/O v2 sensor	We fixed an issue for the NetApp I/O v2 sensor that occurred with the ONTAP version update to 9.12.1P3. Due to changes in the API, the sensor received additional unexpected information which resulted in an error with the message The queried field "value" is empty for NetApp Cluster systems.
OPC UA sensors	We fixed an issue for OPC UA sensors that could run into a memory leak on the probe system causing the probe service to stop. The issue occurred only in certain cases when you ran a large number of OPC UA sensors, like OPC UA Certificate sensor, OPC UA custom sensor and OPC UA Server Status sensor with a short scan interval.
Redfish System Health sensor	We fixed an issue for the Redfish System Health sensor that in certain cases reported an error when the monitored device did not sent a Thermal service. The sensor ran into an exception and reported the error message No 'Thermal' service found in Redfish chassis. The channel for Thermal Status will now report the status Offline/Absent when there is no Thermal data sent by the monitored device. The channel for Thermal Status will not be created if the target system does not support this service determined with the first scan.
SNMP Cisco System Health sensor	We fixed an issue for the SNMP Cisco System Health sensor that resulted in sensor logs that were written into the \Logs\sensors folder when you have selected the option Discard result in the Debug options of the sensor. The sensor kept overwriting the log files in this case when the store result option was disabled. Additionally, the sensor disabled the option Store result automatically after writing log files and reset it to Discard result. We also fixed this behavior so that you can now edit the options again manually.
SNMP Custom String sensor	We fixed an issue for the SNMP Custom String sensor where the parameter for the setting Interpret Result As was always set to the String (default) option, regardless of the option you set before. This issue occurred when the sensor was used in a device template.
SNMP Nutanix Hypervisor sensor	Your SNMP Nutanix Hypervisor sensor will display the speed in the column Last Value (speed) for Bytes Received when you update to this PRTG version. In the previous PRTG versions, the Last Value (speed) for Bytes Received was missing and had the unit Megabyte instead of Mbits configured.

Fixed

PRTG app for desktop

Cloning sensors	We have fixed an issue that prevented a sensor from being cloned to more than one device. The same issue would also occur if you tried to clone another sensor to another device after the first clone attempt. In both cases you would receive an error message stating Invalid operation. You can now clone a sensor (or different sensors) to more than one device.
Comments	We fixed an issue that prevented you from saving new or edit existing comments in the Comment tab of a device or a sensor.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 23.3.88.1319

sha256_exe 0DE28D5BAEDA03DDAF79C7D372EF6D60BE19F516D1891AB8BA53B98ADA98EC8A
sha256_zip 7837E02A061917910E5140F285A41985FAABA376AA91BD52CD890CBEE015D3F8

Lab

Sensors

HTTP v2	We improved the handling of HTTP requests for the HTTP v2 (BETA) sensor to follow the Post/Redirect/Get (PRG) pattern.
REST Custom v2 sensor	We fixed an issue for the channel setting Custom Unit in the REST Custom v2 sensor that was displayed even if you selected a different unit than custom. The field will now be displayed only when you have selected Custom (default) for the relevant channel as unit before.

Lab

PRTG API v2

PRTG application server

We fixed an issue where the PRTG application server went down in certain cases with the previous PRTG preview version 23.3.87.1579. The error was reflected in the Application Server Health (Autonomous) sensor that showed a down status. The workaround was to restart the PRTG core server to make the PRTG application server run again.
We fixed an issue for the PRTG application server that ran into panic mode during startup process in certain cases.

Lab

New UI

Device Tree	We fixed an issue that resulted in a missing cloned group in the new UI tree when you have cloned the group before in the classic UI and removed one device from the cloned group afterwards. Instead of only missing the deleted device in the new UI the whole group was gone in these cases.
Web Interface	We improved the navigation behavior of cards on the device and sensor overview pages.

Improved

Various

All parts of PRTG	Various other minor fixes and improvements.
Sensor Languages	We updated the Spanish and German language files for certain selected sensor types.

August 8th 2023 - Version 23.3.87.1579

Improved

Server

Security

Your API Keys are no longer logged in a readable format in the CoreWebServer.log when you have created an API key and executed an API call request with it. The issue only occurred for the Log in Debug Level.

Improved

Sensors

Microsoft 365 Mailbox sensor

You can now filter emails that match a defined regular expression. The new filter filters email whose Subject, From or Body fields match the defined regular expression. You can set the new option under the Microsoft 365 Settings.

Important: The regular expressions filter will result in the Down status if there are more than 10,000 emails in the mailbox folder you want to monitor. This is because the regular expression filter is applied after the emails are retrieved from the API. The larger the volume of emails, the greater the impact on performance. Enable the Filter by Age setting or use a non-regular expression filter in addition to the regular expression filter to reduce the number of emails.

Fixed

Server

Notifications	We fixed an issue that prevented notification templates from being edited within the notification trigger tab.
PRTG Administration Tool	You can now enter a folder path with a folder that contains ANSI-characters, like umlauts or accents, in the PRTG Core Server Tab of the PRTG Administration Tool. Please note that this change does not work for unicode characters, like the Cyrillic language. If you select a folder path that contains non-ANSI characters or if you enter a folder path name with such in the field for Local Storage of Data Files and Monitoring Database, then an according error message will be displayed.
PRTG Installer	During PRTG installation, when the license server is unreachable due to connection or license expiration issues, the following error message will be displayed: Either the license server is not available because you are offline, or you cannot use the current version of installer because your license has expired. Please check your connection or log into the Paessler shop, make sure your maintenance contract is active and restart the installer. Previously, the installation displayed an error with the message that the license is invalid or that maintenance has expired.
Single Sign-on	We fixed an issue where in rare cases the execution of the button Test Single Sign-On Authorization Endpoint led to an access violation. This issue occurred only in very rare cases if your Application (Client) ID for loading the configuration contained a blank space at the end.
User groups	We fixed an issue for user groups that had the setting Allow user group members to create certain sensors only enabled. When you created a user group with the mentioned setting and did not select any sensor types in the list, then all the sensor types would be selected after a PRTG core server restart for this user group.

Fixed

Sensors

HL7 sensor	We fixed an issue for the HL7 sensor in the settings for Message Header where the Default message header was overwritten in certain cases. The issue happened when you entered data for the setting Override message header but you activated the radio button for Default message header afterwards. In those cases, the sensor always took the override parameters instead of the selected default headers from the script.
HTTP Push Data	Your HTTP Push Data sensors will show again their values in the Last Value column of the channel list of the sensor as well as in the channel gauges of the sensor Overview tab. The Last Value column did not display any data before in the previous PRTG versions for the HTTP Push Data sensor, HTTP Push Data Advanced sensor and HTTP IoT Push Data Advanced sensor.
SNMP sensors	Your SNMP Disk Free and SNMP Memory sensors now display valid values for monitored disks with a larger size >16 terabyte and memory storage >2 terabyte again. In the previous PRTG versions, these sensor types displayed random values or reported an error code 2003.
SSL sensors	We fixed an issue for the SSL Security Check sensor and SSL Certificate sensor that did not work anymore when a SOCKS proxy server for sensor connection was used in the previous PRTG versions. The sensors reported an error with the message The connection has dropped (PE039) in these cases.

Fixed

PRTG Desktop

Probe Transfer

We fixed an issue where the transfer of your probes to another server may have failed in certain cases and resulted in a deadlock with the previous PRTG versions. With PRTG version 23.2.84.1566 we announced that you can find the Probe Transfer feature for PRTG Desktop under Probe Connection Settings in the PRTG setup and that it is no longer available in the Experimental Features section.

Note

Known Issues

PRTG application server

The application server may be down in certain cases when you update to this PRTG preview version 23.3.87.1579. You can see this with the Application Server Health (Autonomous) sensor that shows a down status. As a workaround, please restart your PRTG core server to make the application server go up again. We will deliver a fix for this issue in the upcoming PRTG versions.

Solved with Preview PRTG 23.3.88.1319

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 23.3.87.1579

sha256_exe F546C7101EA149000F6A77CEC655D594E7CD56ECAC582044E26E0DE13FF254D9
sha256_zip 4CCAA810221223DF00755CCDC4030EB468C6CB7E586AA109C40116BDBC308F33

Lab

PRTG API v2

Device settings

We fixed an issue where it was not possible to pause a device via API with /api/v2/devices/40/pause.

API Keys

You can now create, read, update and delete API-Keys with HTTP requests via PRTG API v2. For example, a POST request to users/{id}/api-key will create an API key with name, description and access level properties for the user. For more information about how to use HTTP requests in the PRTG API v2 concerning API keys please see our updated Knowledge Base article: https://kb.paessler.com/en/topic/90008.

Lab

New UI

Device Settings

After searching for a value in the Filter Setting Sections the relevant to your search device setting sections remain expanded even after changing the respective search text value in your device settings.
Collapsed Device Setting sections that contain invalid fields will expand when saving your changes.
Setting sections that contain validation errors are no longer hidden when applying a filter to the device settings.

Lab

Sensors

REST Custom v2

We improved the handling for JSON-path expressions in the REST Custom v2 sensor that in some cases could not be mapped if there were boolean strings with true and false. The mapping now works for counter and integer Value Type in the Channel Settings of the sensor with a given JSONPath/XPath.

SNMP Traffic v2

You can try out the experimental SNMP Traffic v2 sensor. The SNMP Traffic v2 sensor monitors bandwidth and traffic on a device via the Simple Network Management Protocol (SNMP). This sensor type has the same basic settings as its predecessor and comes with the additional channels Broadcasts In (number of incoming broadcast packets), Broadcasts Out (number of outgoing broadcast packets), Multicasts In (number of incoming multicast packets), and Multicasts Out (number of outgoing multicast packets). This sensor is not affected by the following SNMP compatibility options set in the parent device: Port Name Template, Port Name Update, Port Identification, Start Interface Index, and End Interface Index.

Improved

Various

All parts of PRTG	Various other minor fixes and improvements.
Sensor Languages	We updated the Dutch language files for certain selected sensor types.

July 12th 2023 - Version 23.3.86.1515

Fixed

Server

PRTG installer

We fixed an issue for the PRTG installer when you selected to run it in the Custom installation mode. The issue occurred in the previous Preview version 23.2.86.1462 for fresh PRTG installations and when you used the default data path C:\ProgramData\Paessler\PRTG Network Monitor here. In this case you could not proceed on to the next installation step and the PRTG installer reported an error message The Setup program cannot access the selected data path. Check your Windows access rights or select a different directory.

User accounts

We fixed an issue that resulted in an automatically created new user group when you have added a new user account in the previous Preview version 23.2.86.1462. This user group was also wrongly assigned as Primary Group to the user.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 23.3.86.1515

sha256_exe EAF4365079532BF00E0FEF602F60E6E956A1D58128A6AB09FB5D1EB0E1437C26
sha256_zip F32CCFE19DC31A8D77DF026223C5763FDBBBE021866C71BA8FBCA8C998D453F6

Improved

Various

Languages

We updated the German and Spanish language files.

July 4th 2023 - Version 23.2.86.1462

Improved

Security

Vulnerabilities

We fixed a vulnerability where a PRTG user with write permissions could trick a few sensors into creating possibly executable files on the host system, which could then be executed under certain circumstances.
We fixed a vulnerability where it was possible to bypass the CSRF protection.
We fixed a vulnerability where it was possible for a PRTG user with write permissions to trick certain sensors to use sensor specific files from unintended locations on the host system which could lead to arbitrary actions within the capabilities of the sensors.
We fixed a vulnerability where a target url could be tricked to redirect the user to foreign domains.

Improved

Sensors

Sensor Security

We fixed a vulnerability that could enable an authenticated and authorized malicious user to write an arbitrary file on the probe system. The issue affected the exe sensors FTP Server File Count sensor and HTTP XML/REST Value sensor. The vulnerabilities can be tracked under CVE-2023-22631 and CVE-2023-22632.

For further information please also see our Knowledge Base article: https://kb.paessler.com/en/topic/91756

Fixed

Server

PRTG installer	The PRTG installer now validates the access to the selected Installation Path and Data Path on PRTG installation in the Custom mode and resets the path to its default when it is not accessible. Previously, the installation displayed a fatal error with the message PRTG Webserver could not be started properly when the installer failed to write into the path due to access restrictions.
Notifications	We fixed an issue for the HTTP notification type when it contained reserved special characters, such as hash symbols (#), in the placeholders of the URL which you can add in the Execute HTTP Action section. The URL string was cut off after the hash symbol in these cases.
Object naming	We fixed an issue on group, sensor, device and notifications level that led to several issues in the web interface when you entered an URL as name of the relevant object.

Fixed

Sensors

HL7 sensor	We fixed an issue for the HL7 sensor that went into error status with the message Error caused by lookup value 'No' in channel 'Message Control ID OK' (AE:102 Data type error) after running for a certain period of time. The issue was located in the current date and time of the timestamp.
HPE 3PAR	We fixed an issue that happened within the parsing of the output for the commands executed by the HPE 3PAR drive enclosure sensor. The sensor then reported the error message Invalid response structure encountered, some data is missing for HPE Primera systems in certain cases.
HTTP Advanced	Your HTTP Advanced sensors now can use custom headers again when you have defined them in the setting for Use Custom HTTP Headers of the sensor settings. Previously, the custom headers were ignored and overwritten with a default value. We therefore also fixed an issue with the default HTTP headers where the wrong response format, e.g. XML instead of JSON, was returned in certain cases.
NetApp SnapMirror v2	Your NetApp SnapMirror v2 sensor is now able to display a correct status for the channel Transfer Status when the reverse lookup value is insync for Snapmirror continuous protections. Previously, the sensor reported an error with the message The following reverse lookup value is invalid: insync. in this case.
NetFlow	We fixed an issue for the NetFlow v5 sensor where the values for Inbound and Outbound Interface were set to 16 bit instead of 32 bit in certain cases.
OPC UA Sensors	We fixed an issue for the OPC UA Certificate Sensor, OPC UA Custom Sensor and OPC UA Server Status Sensor that went into an error status after one or more scan intervals with the message BadSessionInvalid. The issue happened during session establishment where the session timeout response from the server was not taken into account by the sensor. You can now set the connection configuration for OPC UA to SecurityMode = None in the Endpoints tab with additional user name authentication via Username & Password for a user account. This combination did not work previously and the connection to the OPC UA sensors could not be established before.
Windows MSMQ Queue Length sensor	Your Windows MSMQ Queue Length sensors will now run again when you update to this PRTG version. These sensor types did not work anymore with PRTG version 23.1.82.2175 and reported an error with the message Queuename not found on specified machine in certain cases. The issue occurred on remote systems with a MSMQ service running that could not be queried.

Note

Known Issue

Libraries

You currently cannot add a library with a user account that has read/write access when you update to this PRTG Preview version. When you are logged in as a read/write user that has full access in the according user group you will get an Unauthorized ajax error message for adding a new library. As a workaround, please use an admin user account instead. We will deliver a fix for this issue in the upcoming PRTG versions.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 23.2.86.1462

sha256_exe 909475EFCFA182D71D7166DB6D9C6DB76E92D0C2E751CF2701A6B353F9AD283C
sha256_zip 5E30416A1EF2271382EAD1FD8D1210DF7C89779CF1B189C1867687A92C82E890

Lab

Sensors

Cisco Meraki	We fixed an issue for the Cisco Meraki License Sensor and Cisco Meraki Network Health Sensor that went into an error status when PRTG was updated to version 23.2.84.1566 with the message The sensor could not get a response from the server. 0 (). schannel: next InitializeSecurityContext failed: SEC_E_ILLEGAL_MESSAGE (0x80090326) - This error usually occurs when a fatal SSL/TLS alert is received (e.g. handshake failed).
HTTP v2	To make it more clear, we have renamed the setting from Timeout (sec.) to Timeout per Request (sec.) in the HTTP Specific settings of the sensor.
SNMP Uptime v2	We fixed an issue for the SNMP Uptime v2 sensor that reported the following error in certain cases: Could not resolve OID for 'iso.org.dod.internet.mgmt.mib-2.host.hrSystem.hrSystemUptime.0'. Either the required MIB file was not found or the name is invalid. The issue occurred only when you have added the sensor to a remote probe.
Script v2	We fixed an issue for the Script v2 sensor where the path to the Script folder was broken. The issue was fixed for the path on Microsoft Windows operating systems.

Lab

New UI

Web Interface

We fixed an issue that led to an unknown error when you logged in to PRTG after a logout and when you navigated to Monitoring view via side menu.
We fixed an issue that resulted in an error message "An unknown error occurred". The error occurred when you expanded the Graphs card of a sensor and then closed it with the x button.
You can now add channel graphs again via the Add button in the expanded view of the Graphs page of a sensor.
We activated the Change Password button, which previously prevented you from submitting your request to set a new password.
You will now see a banner when you activate the new UI that will inform you about the development status. The text message with linked Knowledge Base article is The new interface is still in development and not yet feature complete. Please take a look at our Knowledge Base to see what is coming next.

Improved

Various

All parts of PRTG

Various other minor fixes and improvements.

June 15th 2023 - Version 23.2.85.1327

Fixed

Server

Access Keys

We fixed an issue for Probe and PRTG application server access keys that were encrypted with Preview version 23.2.85.1310 what led to a corrupted PRTG configuration file in certain cases. The issue occurred only when you had more than one access keys and only when you executed a second core server restart after the update to Preview version 23.2.85.1310.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 23.2.85.1327

sha256_exe 96A458D4C378E0488E840D6B4FB0884D015DC265CA991799953D17052BB3BA03
sha256_zip EDF16848F86608C1E3A52C211B753DF2629463D5F509BF209889C44D5B8B4921

June 6th 2023 - Version 23.2.85.1310

Fixed

Server

Forgot Password

Read-only users that do not have the permission to change their password will now receive an email again with the information Subject: Password Reset Failed: Please contact your PRTG administrator. Password Reset Failed: Not allowed. Read-only users without permission to change their password did not receive this email in the previous PRTG version before with the Forgot password? option on the PRTG login page.

PRTG Configuration file

Access keys for Probe and PRTG application server are now encrypted in the PRTG configuration file. The mentioned access keys were displayed in a readable format in the previous PRTG versions.

Fixed

Sensors

DNS v2 sensor	We fixed an issue for the DNS v2 sensor where the character escaping for curly brackets } in the Filter Value did not work properly. The sensor displayed the error message regex_error(error_brace): The expression contained mismatched { and }.
Microsoft Azure Storage Account Sensor	We fixed an issue for the Microsoft Azure Storage Account sensor's channel, Used Capacity , which was previously recording 0 values. With this fix the sensor returns the average values.
OPC UA Server Status sensor	The OPC UA Server Status sensor now supports Client Keys with a 4096 bit length for OPC Client Certificates. In previous PRTG versions, the sensor reported an error when a private key with a length other then 2048 bits was used.
Veeam Backup Job Status and Veeam Backup Job Status Advanced sensor	We fixed an issue for the Veeam Backup Job Status and Veeam Backup Job Status Advanced sensor where the login on the Veeam Enterprise Manager failed with the message Enterprise Manager Login failed: 401: Unauthorized

Fixed

PRTG Mobile Apps

PRTG for Android and iOS Mobile App

We fixed an issue where the login for non admin user accounts did not work anymore when PRTG was updated to version 23.2.84.1566. The issue occurred for both manual and QR code login. The workaround was to log in with an admin user account.

Note

Known Issues

PRTG Desktop Probe Transfer

The transfer of your probes to another server may fail in certain cases and will result in a deadlock. We are currently analyzing the issue.

With PRTG version 23.2.84.1566 we announced that you can find the Probe Transfer feature for PRTG Desktop under Probe Connection Settings in the PRTG setup and that it is no longer available in the Experimental Features section.

Access Keys

If you have more than one access keys in your list for remote probe connections, after updating to PRTG Preview version 23.2.85.1310, the configuration will retain only the first key entry and any other key gets deleted or overwritten. We are currently analyzing the issue and we will deliver a fix for this issue in the upcoming PRTG versions.

Note: Existing configurations fail after a second core restart after the update.

Solved with Preview PRTG 23.2.85.1327

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 23.2.85.1310

sha256_exe 0EAF537945BDC40B60AEC4A8BA7A4B22B8B17D1D520D75607F2CA7E470621BBA
sha256_zip 5595B872F30FC71513513F9C715FFC1C95B28CC91CE0F505B6DEC505D1CCB5B8

Lab

Sensors

HTTP v2

We improved the HTTP v2 sensor to be more compliant with its predecessors HTTP and HTTP Advanced sensor concerning the redirect handling. The HTTP v2 sensor now comes with the new Setting Maximum number of Redirects that is by default set to 16. You can use a value of 0 if you do not want the sensor to follow any redirects.

SNMP Disk Free v2

You can try out the experimental SNMP Disk Free v2 sensor that was rewritten to work on the Multi-Platform Probe. The SNMP Disk Free sensor monitors the free disk space on a logical disk via the Simple Network Management Protocol (SNMP). This sensor type has the same basic settings as its predecessor and comes with the channels Free Space (bytes), Free Space (%) and Total Space (bytes).

Lab

PRTG API v2

PRTG application server

We fixed an issue that prevented logging in after an automatic logout, for example after a timeout, logout in a different tab or when the PRTG application server was disconnected.

Lab

New UI

Device settings

Your device Settings are now divided in collapsible sections providing you a clear overview of the available settings.
You can now filter for items in the device Settings via an integrated search field. The matching results will be displayed expanded per section so that you can immediately change them.
You can now collapse and expand the settings sections with a toggle button. Basic Device Settings are expanded by default. When you have expanded all settings sections, the button will display close all and open all when the settings sections are collapsed.

Web Interface

We fixed an issue that resulted in not keeping the zoomed-out position of a graph of a device or sensor overview in down or warning status after the automatic refresh.

Improved

Various

All parts of PRTG

Various other minor fixes and improvements.

May 17th 2023 - Version 23.2.84.1562

Fixed

Server

Security

We fixed an issue for Microsoft 365 credentials that were displayed in a readable format in the Core Log. The issue only occurred for the Log in Debug Level.

Fixed

Sensors

IPMI System Health sensor

We fixed an issue that appeared in the IPMI System Health sensors that caused increased mutex timeouts.

Improved

Languages

German and Spanish

We updated the German and Spanish language files.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 23.2.84.1562

sha256_exe 571020D5363B56692249F190B0728560A60C590EB89B0F7F63AEBFF791D5F210
sha256_zip 25A1199F80739374B678FD6695C11A648726CC2D7F98210E8D7AD01B8FCDC773

May 11th 2023 - Version 23.2.84.1532

Blog article

By Michael Becker • Jun 9, 2023

PRTG 23.2.84 is available in the stable channel

Paessler PRTG 23.2.84 is now available in the stable release channel!This version comes with the new NetApp v2 sensors, the experimental SNMP Uptime v2 and SNMP Custom v2 sensors, and security...
Read the complete blog post here

New

Sensors

NetApp v2

The new NetApp v2 sensors NetApp Aggregate v2, NetApp I/O v2, NetApp LIF v2, NetApp LUN v2, NetApp NIC v2, NetApp Physical Disk v2, NetApp SnapMirror v2 Sensor, NetApp System Health v2 and NetApp Volume v2 support the new ONTAP REST API as of ONTAP 9.6.

We first introduced the new NetApp v2 sensors as experimental with PRTG version 22.3.79.2108 since NetApp delivers a new RESTful API for ONTAP based storage systems and former ONTAPI will reach end of availability soon. We received valuable feedback and in addition to the functionality that the sensor already had in the last PRTG version, we resolved one more issue for this release.

Your NetApp Volume v2 sensor now reports volumes correctly in a NetApp MetroCluster configuration setting. Previously, the sensor displayed an error with the message The queried field "space.available" is empty. when it was used in cluster configurations.

Note:

Improved

Security

SNMP v3	PRTG now supports the following encryption methods for SNMP v3 communication in the Credentials for SNMP Devices settings: AES192 and AES256 (Advanced Encryption Standard), SHA-224, SHA-256, SHA-384 and SHA-512 (Secure Hash Algorithms). Previously we only supported AES128 for encryption.
PRTG status page	We hardened PRTG against possible data extraction from instances on the PRTG status page.

Improved

Sensors

Sensor Security

We improved the sensor types SMTP&POP3 Round Trip sensor, SMTP&IMAP Round Trip sensor and SMTP sensor which were not compliant to the Internet Message Format RFC 2822. Outgoing emails from PRTG to your (SMTP) server will no longer set a Message-ID field itself, but let the remote server add it. This applies to any other mail client.

Fixed

Server

Map Layout	You can now enter only valid pixel sizes for Map Width and Map Height in the Map Layout settings that range from 1 (min.) to 2147483647 (max.). Before it was possible to enter and save large numbers without limitation or negative numbers with the result that the map was not working afterwards.
Scanning Interval	We fixed an issue in the Monitoring settings for the Scanning Intervals section. In previous PRTG versions you could enter and save an already existing scanning interval to Available Intervals with the same or with a different unit. For example, if you had a scanning interval of 60s you could add 60s as interval again or equivalent to it 1m.
Security	We fixed an issue for Microsoft 365 credentials that were displayed in a readable format in the Core Log. The issue only occurred for the Log in Debug Level.

Fixed

Sensors

Docker Container Status	Your Docker Container Status sensors work properly again. In the previous PRTG version 23.2.83 they ran into an error with the message bad certificate in some cases.
Filtering and libraries	Filter by type option in the main menu bar and in libraries now properly works for all sensors. Filtering by certain sensor types previously showed no sensors directly after PRTG updates and only after a server restart.
IPMI System Health sensor	We fixed an issue that appeared in the IPMI System Health sensors that caused increased mutex timeouts.

Changed

Server

PRTG default SSL certificate

We created a new PRTG default SSL certificate since the one in use will expire soon. The new certificate will be automatically set only if you make a fresh PRTG installation and not upon updating PRTG. If you have already installed PRTG you need to manually update it.
For more details, please see our Knowledge Base article https://kb.paessler.com/en/topic/283.

Changed

PRTG Desktop

Probe Transfer

You can now find the feature Probe Transfer in the Probe Connection Settings as it has left the Experimental Features section in the PRTG setup. This feature allows PRTG Desktop to access the configuration files of your probes to transfer a probe to another server. You still need to enable the feature first for your server in the Probe Connection Settings.

Note

Known Issues

PRTG Mobile Apps and PRTG Desktop

The login, via QR code and manually, to your PRTG Android and iOS App and the PRTG Desktop is currently not working for non admin user accounts when your PRTG is updated to version 23.2.84.1566. As a workaround, please use an admin user account instead. We will deliver a fix for this issue with an upcoming PRTG version.

Solved with PRTG 23.3.86.1520

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 23.2.84.1562

sha256_exe 571020D5363B56692249F190B0728560A60C590EB89B0F7F63AEBFF791D5F210
sha256_zip 25A1199F80739374B678FD6695C11A648726CC2D7F98210E8D7AD01B8FCDC773

Stable 23.2.84.1566

sha256_exe 36E6237485ADFEECEB198038FD1040DAA42894B81A9325CCE9323EC17E326EE1
sha256_zip 0C039BA1704203C63456B1A2088AE2A3CA6C1E6E93ECBDFED862F87ABB27D2C0

Lab

Sensors

Cisco Meraki	We added a new setting Meraki Dashboard API EndPoint in the section Credentials for Cisco Meraki devices. With this field you can define your API endpoint for the sensor types Cisco Meraki License (BETA) and Cisco Meraki Netwok Health (BETA) after unlocking it. The setting resolves any issues on a device or group level where the API url has an extension other than .com.
REST Custom v2	You can now select unit types and lookups for each channel in the Channel Settings of your REST Custom v2 sensor. Input fields for Channel # Lookup ID and Channel # Custom Unit are now available. For custom units you can set a unit name now. Currently, all settings are visible when you enable the Channel # Custom Unit with Absolute (integer), Absolute (float) and Delta (counter) as value types. If you select lookup as channel type the sensor will be created using the given lookup file. Please note that you have to provide the name of the lookup during sensor creation for now when you want to select a lookup file and that the lookup can only be edited in the channel settings after sensor creation. We improved the error handling of the REST Custom v2 sensor that will now display an according error message in case of an error and will run into an error status. For example, the error message will include the HTTP status code of the REST response in case the parsing fails due to invalid JSON.
SNMP Custom v2	You can try out the experimental SNMP Custom v2 sensor that we have rewritten to work on the Multi-Platform Probe. This sensor type comes with the same basic settings as the already existing SNMP Custom sensor. The SNMP Custom sensor monitors a single parameter that is returned by a specific object identifier (OID). The experimental SNMP custom v2 sensor will use both OID and MIB files.For more information about MIBs and how to use them please see our Knowledge Base article:https://kb.paessler.com/en/topic/91688.
SNMP Uptime v2	You can try out the experimental SNMP Uptime v2 sensor that we have rewritten to work on the Multi-Platform Probe. This sensor type comes with the same basic settings as the already existing SNMP System Uptime sensor including the additional Data Source setting under the section SNMP Uptime Specific, where you can select the object identifier (OID) the sensor gets its uptime from. The Data source is also depicted in the sensor status.
Script v2	We improved the Script v2 sensor to use a new JSON schema format. The sensor executes a Python script that returns data in JSON format and shows the exit code. This way you can create your own custom script sensors that may not be available in PRTG by default. Additionally the Type field in the sensor Settings has a new option Lookups. When you use lookups for Script Specific Type you need to set the lookup_name as property which defines the used lookup file. The Script v2 sensor now also supports unit kinds for the Type field that determine how a value is interpreted and therefore displayed. Kind can be custom, count, percent, for example. We also updated and improved the example scripts that are available during sensor creation. For available example scripts and how to use them, see the Knowledge Base article https://kb.paessler.com/en/topic/91349.

Lab

New UI

Device Settings

We improved the Priority setting in the device Settings where you now can select a star rating.
We added the section Additional Device Information that displays the Service URL.

Web Interface

We fixed an issue with the Keyword filter action on sensor and channel lists. Previously the filter input would not return results with the search term from the primary channel column. With the new fix the filter returns the results from a group that includes the search term in the primary channel column. This action was fixed in a group, device, probe and sensor level.
We fixed an issue for the Automatic Refresh option in the PRTG Web Interface settings that occurred when you had the radio button Do not automatically refresh pages selected in the classic UI. The refresh timer was displayed in the new UI and returned an unknown error when you activated it. It is now hidden in the new UI when you have deactivated the Automatic Refresh option
We fixed an issue for the link different endpoints on the PRTG APIv2 card that did not open in a new browser tab before.
You can now clone a group with sensors that have channel limits without losing the given settings. Previously, the channel limits of a sensor were not adopted if you cloned the group of the sensor what could result in a wrong sensor status.

Improved

Various

All parts of PRTG	Various other minor fixes and improvements.
Languages	We updated the Chinese, Dutch, French, German, Japanese, Portuguese, Russian and Spanish language files.

March 30th 2023 - Version 23.1.83.1742

Blog article

By Michael Becker • Apr 26, 2023

Here are the details about the latest PRTG release!

Paessler PRTG 23.2.83 is now available in the stable release channel! This version comes with an update for OpenSSL to version 1.1.1, an update for our reporter engine to Chromium version 89, a...
Read the complete blog post here

Improved

Security

Device icon	PRTG now validates the value of a device icon to avoid the risk of modifying it to possibly enter arbitrary content into the style tags when loading the Cascading Style Sheets (CSS) for the relevant page. (CVE-2022-35739) For more information please see our Knowledge Base article: https://kb.paessler.com/en/topic/91149.
PRTG Login Page	We improved the wording of an error message text on the login page that displayed sensitive information. The error message occurred in cases when users of an Active Directory group that was not part of a PRTG user group used wrong login credentials and it displayed the information no corresponding Active Directory Security group was found. The error message now displays Your login has failed. Please contact your administrator.
Web server	We hardened PRTG against a possible Cross-Site Scripting (XSS) attack where a malicious actor could trick a victim into running injected javascript code over a manipulated link.

Improved

Server

Notification Delivery	With PRTG version 23.2.83 we now support TLS 1.3 in the Notification Delivery settings for the Delivery Mechanism Use one SMTP relay server (recommended in LANs/NATs). If you select this option, TLS 1.3 will additionally be displayed for the SSL/TLS Method radio group.
Reports	We updated our reporting engine to the Chromium version 89. This update will improve the rendering of PDF reports that did not work in certain cases before. Chromium will create temporary files under %TEMP%/prtg_reporter that will be removed when the PDF report creation is finished.
Update to OpenSSL 1.1.1t	To ensure secure communication furthermore we updated to the OpenSSL version 1.1.1t. We now support TLS 1.3 in the connection security settings for High, Default and Weakened security connection in the Probe Connection settings and PRTG Web Server settings. Important: Please note concerning your running HTTP sensors that we do not support any cryptographically broken ciphers for outgoing HTTP connections anymore with this update to OpenSSL 1.1.1t due to security reasons. This concerns the encryption methods MD5, DES, RC4. If you run any HTTP sensors for devices that do not offer any ciphers supported by OpenSSL 1.1.1t anymore, the sensors may run into an error with the message ssl3_read_bytes:sslv3 alert handshake failure. For further information about the high security standards of PRTG please see our Knowledge Base article: https://kb.paessler.com/en/topic/61108.

Improved

Sensors

HPE 3PAR Drive Enclosure	We improved our HPE 3PAR Drive Enclosure sensors that in certain cases returned an error with the message An error occured. For more information, check the \Logs\sensors subfolder of the PRTG data directory on the probe system. If you have not enabled debug options, activate Store result under Debug Options in the settings of the sensor, rescan, and check the \Logs\sensors subfolder of the PRTG data directory on the probe system. showcage: invalid option -d. The issue occurred because the sensor uses the option showcage -d in the API what could not be processed by the Primera system, which instead uses the option showcage -all.
Microsoft Azure Subscription Cost	We updated our Microsoft Azure Subscription Cost sensors so that they now support the new Azure billing model from Microsoft. Before, the sensor returned an error in the result of sensor log with the message No billing periods found. Cannot continue since there are no individual billing periods anymore in the new Azure billing model and it uses invoices for calendar months instead.
Sensor security TLS connection	With the update of OpenSSL we also improved certain sensor types that now support TLS 1.3 connection security: SSL Security Check sensor now has a new channel for TLS 1.3 TLS 1.3 (Perfect) that the sensor will check if it is supported by the target device and either display Accepted or Denied. In case of Denied, the sensor will report an error in the channel Security Rating. HTTP Push Data sensor, HTTP Push Data Advanced sensor, HTTP Push Count sensor, HTTP IoT Push Data Advanced sensor now have a third option for TLS Settings for HTTPS high security (TLS 1.2 to 1.3 and strong ciphers). Default setting for added sensors will be HTTP Unsecure. If you use sensors running on HTTPs and update to this PRTG version, the sensors will use HTTPS low security (TLS 1.0 to 1.3 and weak ciphers) to stay compatible. Please note that all HTTP Push sensors always support TLS 1.3 even in low security setting. If you use HTTPS high security setting, TLS 1.0 and TLS 1.1 will be disabled and the sensors use the high security ciphers instead.
Sensor security digital signature	We improved several sensor types by signing them digitally with Secure Hash Algorithms sha256. In the previous PRTG version, these sensor types failed in certain cases when an AV scanner detected the unsigned .exe files as insecure. Sensor types improved, for example, are as follows: FTP Server File Count sensor, Windows MSMQ Queue Length sensor, Ping Jitter sensor, Windows Print Queue, Traceroute Hop Count sensor, HTTP XML/REST Value sensor.

Fixed

Sensors

Microsoft 365 Mailbox sensor

We fixed an issue for the Microsoft 365 Mailbox sensor that could not match emails when you used special (non-ASCII) characters in the filter options Filter by 'subject' with Contains all or Contains any, for example words with accents like "é". The issue was located in the library used by the sensor where URL encoding did not work properly.

Fixed

Server

Notifications	We fixed an issue where subjects in email notifications could not be displayed correctly in certain cases in previous PRTG version 23.1.82.2175 and 23.1.82.2074. The issue occurred in cases when you used diacritics or umlauts in the subjects of email notifications.
PRTG Core server	We fixed an issue for the PRTG core server that caused high CPU usage in certain cases. The reason for this were connection threads in the background that were not terminated.
Reports	You can now generate PDF reports again when you are logged in via single-sign on. We first introduced this feature for single-sign on with PRTG version 22.2.77.2204, yet it did not work anymore in the previous PRTG version. The PDF report only displayed the text Unauthorized instead of the report data.

Changed

Sensors

Python Script Advanced

With PRTG version 23.2.83 we deliver a new Python distribution. Python distribution 3.9.13 includes security patches and several other improvements.

Please make sure your custom Python scripts are compatible with Python version 3.9.13. You only need to consider the change if you are using the Python Script Advanced Sensor.

Note

PRTG API v2, New UI

PRTG application server ports

The new UI and PRTG API v2 will now be served under port 1616 (HTTPS) or 1615 (HTTP). We exchanged the old configured ports HTTPS 8443 and HTTP 8080 because we experienced issues in certain cases that the PRTG application server could not start. Please ensure that these ports are not blocked by your firewall and be sure to update any bookmarks and hardcoded URLs. The Open new UI button in the classic UI will be updated automatically.

Note

Sensors

Discontinued NetApp Sensors with upcoming PRTG versions

With PRTG version 23.2.83 you will receive a to do ticket for your NetApp sensors that you still can add but they will no longer work when you update to ONTAP 9.13.1. NetApp ONTAPI will no longer be available by the end of July and NetApp delivers a new RESTful API (ONTAP REST API) for ONTAP based storage systems. With PRTG version 22.3.79.2108 we introduced new NetApp v2 (BETA) sensors that support ONTAP 9.6 and higher.

Please also see our Knowledge Base article for more information: https://kb.paessler.com/en/topic/90198

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 23.1.83.1742

sha256_exe 64B149F521E642F129F12746CE341FC1F27C295492AB04AF3EB17531476D301D
sha256_zip 7F6422082081865010111B0FDF7C3C0CC8D10738D152565F3552054AD15F614F

Stable 23.2.83.1760

sha256_exe 1BC9CF151400EF422EAAE687CD6CF5E30E598D38848EEB55D409380635FAAFE4
sha256_zip CB2A73150272D74195DFD1EBF8F92BC202296833A6FE16DD11C30994AC1264CF

Note

Known Issues

Docker Container Status

Your Docker Container Status sensors may run into an error with the message bad certificate when you update to this PRTG version 23.2.83. We are currently analyzing the issue.

Solved with PRTG 23.2.84.1566

Note

Update Notes

Cache recalculation

The update to this PRTG version will in most cases immediately cause a cache recalculation upon starting the PRTG server. While PRTG is usable during the cache recalculation, it will considerably consume more hardware resources like CPU and memory. Depending on your monitoring configuration, you may encounter negative effects on the performance of PRTG during this process. We recommend that you reserve extra time for the PRTG update.

Lab

Sensors

NetApp SnapMirror v2	You will now receive the NetApp SnapMirror v2 sensor as a result when you add a sensor to a device on the Add sensor page. The sensor did not appear before when you searched for NetApp sensors and the radio button for Storage and File server was active.
REST Custom v2	The REST Custom v2 sensors now support the count function in arrays to get the number of elements that are included in an array. We implemented a new value type String (status) which displays three text input fields when you select it for channel strings mapped to the Up, Warning and Down status. The text field input is optional. The channel is assigned to a static lookup file mapping the values for up, warning and down to the according status. The values are mapped to an integer before accordingly. Your REST Custom v2 sensors now display the primary channel correctly on the sensor overview page when they are deployed via device template. In the previous PRTG versions, you had to set the primary channel manually afterwards of the device template auto-discovery. You can now perform basic calculations on the result of REST queries with the REST Custom v2 sensors without using an extra custom script.
Redfish	You will now receive results for Redfish sensors when you add a sensor from a device and search for the term Fujitsu on the Add sensor page /addsensor.htm. The sensors listed are Redfish Power Supply sensor (NEW), Redfish System Health sensor (NEW) and Redfish Virtual Disk sensor (BETA).

Lab

Multi-Platform Probe

PRTG Probe adapter

With this PRTG version we deliver the DLL file for the PRTG probe adapter by default with the PRTG installer, to make the setup and the use of the Multi-Platform Probe easier. For more information about the Multi-Platform Probe please see our Knowledge Base article: https://kb.paessler.com/en/topic/90140

Lab

New UI

Controls	You can now open the channel graphs page via the context menu button Show Channel Graph. The channel details and channel graph dialogues show error information in case of an error when data cannot be found or loaded. You will now get a dialogue pop-up when you click on the Discard button for changing settings. The dialogue offers the options to Cancel or Confirm discarding your changes. You will get a similar dialogue message when you try to navigate to a different page or when you close the page. The dialogues only appear when you changed settings that you did not save.
Device Settings	We improved the Basic Device Settings by displaying the Monitoring Status and the IP Version options as radio group. This change applies only if there are less than five selections per option. You will now see the action bar buttons Discard and Save Settings when you are on the Basic Device Settings page. The action buttons were only visible after you made changes before. After the change, a text appears how many changes you have made, like 1 Change.
Web Interface	Channel details of a sensor are now displayed when you log in to the new UI again after a logout or timeout. Data cache is now cleared when you log out from PRTG in the new UI. We fixed an issue for lookups that in some cases displayed an error when you used custom lookup definitions with an unknown type. We fixed an issue where the scrolled down position was saved on the sensor overview page. If you now scroll down on a sensor overview page and select another sensor overview page it will be displayed on the top again. You now can use the new UI only with a valid license. In case you use an inactive license you will be redirected to https:///activation.htm when you log in to the new UI.

Lab

PRTG API v2

API	We improved the order of the settings of objects for the experimental section experimental/devices/ID/settings with the most used and most important settings at the top.
Licenses	You can now run the PRTG application server and activate the new UI with a PRTG Enterprise license. This did not work before in the previous PRTG version when you used a PRTG Enterprise license. The error message returned was The functionality of your PRTG installation is currently limited. License is inactive.
PRTG application server	We fixed an issue for the information text file about open source libraries used in PRTG. You can find the prtgappserver_license_report.txt file in the PRTG installation path. The file contains information about library name, version, notice and license text. We fixed an issue where in some cases the application server ran on 32-bit when the core server was operating in 64-bit mode. The application server now uses the same version that the core server runs. We improved the startup check of the PRTG application server that in some cases did not come up when it did not receive certain sensor IDs from the PRTG core server.

Improved

Various

All parts of PRTG	Various other minor fixes and improvements.
Languages	We updated the German and Spanish language files.

Note

ITOps Board 3.7.2

Security

We updated the ITOps to version 3.7.2 to fix an improper access control in the API which could have led to unwanted data leakage (CVE-2023-29488).

January 25th 2023 – Version 23.1.82.2026

Blog article

By Michael Becker • Mar 1, 2023

All about the new PRTG release version 23.1.82

i Please note Version 23.1.82.2175 includes fixes for the HPE 3PAR and HTTP push sensors, as well as fixes for the delivery of notifications. Take a look here to get all the details. The latest...
Read the complete blog post here

Improved

Sensors

OPC UA sensors

The OPC UA Certificate, OPC UA Custom and OPC UA Server Status sensor types now support insecure connections to your OPC UA server with username and password authentication. Note that if you use this configuration, your data including passwords will be transmitted unencrypted.

Thank you for your feedback that the ability to monitor devices with such configurations is needed in several use cases.

Improved

Security

Sensors	Additionally to the Exchange PowerShell, Citrix and EXE sensors in Paessler PRTG version 22.3.79, we also improved the method of password transmission for the following sensor types: Active Directory Replication Errors sensor FTP Server File Count sensor HTTP XML/REST Value sensor IP on DNS Blacklist sensor Ping Jitter sensor Traceroute Hop Count sensor Windows Print Queue sensor Windows MSMQ Queue Length sensor WSUS Statistics sensor Previously, passwords were sent in clear text. Now they are encrypted, so they are no longer visible in the Windows Event Log or Task Manager.
Vulnerability	We fixed a vulnerability that affected certain exe sensors. We thank the reporter who brought this vulnerability to our attention.
Updates	PRTG now uses HTTPS by default when downloading new software versions for the PRTG auto-update.

Fixed

Sensors

SMTP&POP3 Round Trip

We fixed an issue with the SMTP&POP3 Round Trip sensor that did not report an error if no email was found in the relevant mailbox. The issue was caused by the sensor matching any email on the mail server.

SSL Certificate

The SSL Certificate sensor works with a Virtual Host (SNI Name) again even if the SNI name does not contain a dot (.). In previous versions, the sensor showed a down status with the error message Connection reset by peer (socket error # 10054) if the SNI name had no dot. For example, the sensor still worked as expected with example.com but not with example as SNI name. Additionally, the SSL Certificate sensor now supports domains that contain an umlaut (like ü or ä) in the name.

Fixed

Server

Access rights	Read-only users can change their password by themselves again if the PRTG System Administrator enables the option Allow user to change the account password in their user account settings.
PRTG Core Server	We fixed an issue where in some cases certain licensee names caused the service for the PRTG core server to stop. The issue occurred during the license activation process.
Remote probes	The automatic update of a large number of remote probes to the latest PRTG version properly works again. In previous versions, remote probes required a manual update after 20 automatically updated remote probes.

Fixed

WebGUI

Tutorials

You can now watch again the PRTG Tutorial: Creating Maps on the PRTG Welcome page. The link did not work anymore in the previous versions.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 23.1.82.2026

sha256_exe B5A8A06EF616F023E6EFCE31031036ACDB08EC128BAEF5143DD16F36E18DFEE2
sha256_zip F04C82387B012049633C48CDAAA369A7368D58C3B6CA3B36B654CF79F5F41683

Stable 23.1.82.2074

sha256_exe 0ACD4ABDE0AA527E417E22148ABE1818639064B06D9D8E48F4281B945AA69710
sha256_zip F2F262AB9F98919C290B8159BDE1CAF8D1D2377562CC8A692B3E4345E11D0CAF

Note

PRTG API v2, New UI

Stability

The new UI is now stable enough to be activated on production systems. Previously, we recommended that you activate the new UI only in test environments. When you activate it, you can use it side-by-side with the classic UI.

Please note that the new UI and PRTG API v2 are still in an ongoing development process and that several features are missing.

For further information about features, requirements and known issues for PRTG API v2 and the new UI please see our Knowledge Base article: I want to use the new UI and API v2. What do I need to know?

Lab

Sensors

HTTP v2	We fixed an issue in the multi-edit menu that caused an error in the required fields validation for the post body. As a result, the Post Body field is no longer marked as a required field when you select POST as Request Method. We fixed an issue with the timeout setting in the HTTP v2 sensor. Previously, the sensor did not report an error even if the requested HTTP page did not respond within a certain limit of time.
Ping v2	The Response Time channel is now set as the primary channel for the Ping v2 sensor if you created the sensor with Inverted Error Status disabled and multiple pings. The sensor still shows the Status channel as the primary channel if you enabled the Inverted Error Status feature when creating the sensor.
Script v2	You can try out the experimental Script v2 sensor that also works on the Multi-Platform Probe. The sensor executes a Python script that returns data in JSON format and shows the exit code. This way you can create your own custom script sensors that may not be available in PRTG by default. For available example scripts and how to use them, please see the Knowledge Base article: https://kb.paessler.com/en/topic/91349

Lab

New UI

Controls	You can now change the basic settings of a device in the Basic Device Settings section. The basic settings of a device include Status, IPv4 Address/DNS Name, IP Version, Device Name and Priority. You can now resume acknowledged alarms for sensors using the Clear Acknowledged Alarm button via the context menu and bulk edit change.
Mobile View	The mobile view now shows channels with unknown lookup states.
Channels	We fixed an issue in the sensor graphs section to avoid the risk of possible cross-site scripting (XSS) attacks.
Security	We fixed an issue for sensor channel values that were sometimes displayed in too large numbers.
Web Interface	You can now share the graphs page with a URL link. You can now see the specific scanning times of a sensor if you have defined them as described in https://https://kb.paessler.com/en/topic/3723. In this case, the scanning interval is named Irregular and shows the scanning times in a tooltip. We implemented live graphs for channels that show a down or warning status on the sensor and device overview cards. We fixed an issue on the sensor graphs page that caused a reset after an automatic refresh if you interacted with the graphs, such as zooming in. You can open graphs in a dedicated, larger view. We have updated the content of the PRTG Welcome page to reflect the new features available.

Lab

PRTG API v2

Devices	You can now delete a device with a DELETE request in the experimental section /experimental/devices/{id}. If the request was successful, you will get a 204 response code in return. Note: You can only delete devices, not probes or groups, for example. You can now edit the settings of a device by sending a PATCH request to /experimental/devices/ {id}. Please note that this feature is still in experimental status and does not contain all functionalities yet.
Sensors	We fixed an issue in the experimental section for the settings endpoints /experimental/sensors/ID/settings and /experimental/devices/ID/settings. The settings were returned empty after you created a device or sensor.
Channels	We renamed the scale field in the payload of channels to scaling and improved the description.
Web Interface	We fixed an issue for sensor channel values that were sometimes displayed in too large numbers.

Improved

Various

All parts of PRTG	Various other minor fixes and improvements.
Languages	We updated the German and Spanish language files.

November 22nd 2022 – Version 22.4.81.1504

Blog article

By Michael Becker • Dec 14, 2022

New release, new sensors! PRTG version 22.4.81 is available.

Paessler PRTG 22.4.81.1532 is now available in the stable release channel and comes with the experimental Ping v2 sensor, the experimental HTTP v2 sensor, a security update, and an update...
Read the complete blog post here

Fixed

Sensors

FTP sensors	We fixed an issue for FTP sensors that in some cases displayed the error message Start SSL negotiation command failed. (SSL/TLS not available). The issue occurred in cases when a connection with a TLS-only port was established.
HPE 3PAR Drive Enclosure	We fixed an issue for the HPE 3PAR Drive Enclosure sensor that in some cases showed an error during the sensor creation process. The error message displayed was The queried field 'FormFactor' is empty.
HTTP Push Data	We fixed an issue for the HTTP Push Data sensor that showed an access violation error with the message Failed to handle request. Sensors that were affected are HTTP Push Data sensor, HTTP Push Data Advanced Sensor and HTTP IoT Push Data Advanced sensor. The issue occurred in cases when you used the port 5051 for HTTPS connection with TLS.
MQTT Subscribe Custom	We fixed an issue for the MQTT Subscribe Custom sensor that returned the error message The received JSON data could not be parsed. This happened in cases when the JSON string could not be parsed completely due to additional characters.
Zoom Service Status	The channels of your Zoom Service Status sensors will now be displayed correctly again. Regions have been introduced by Zoom recently and components have the same naming as regions, that is why channels in the Zoom Service Status sensor were displayed multiple times in the previous PRTG version. To monitor the Zoom groups and components you have to add the Zoom Service Status sensor again. You will also receive a to do ticket for this sensor type with further information.

Fixed

Server

CPU usage	We fixed an issue that occurred with Paessler PRTG version 22.4.80.1553 for denied remote probes that caused high CPU usage in the core server of PRTG. If you had IP addresses of remote probes in the Deny IP Addresses filter under Core & Probes this would lead to an increase in the CPU load as the issue was in the communication for disconnected connections to the core server of PRTG.
PRTG Administration Tool	You can now send logfiles to Paessler again from the PRTG Administration Tool in the tab Logs and Info via button Send Logs to Paessler.
Security	We fixed an issue in the tag handling system regarding tag parameters to avoid the risk of a possible Cross Site Scripting (XSS) attack.

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 22.4.81.1504

sha256_exe 28F05875EA31067881B2E04B3557F1BBC3D174D2064CCBA3E93BD4F1EC2E7839
sha256_zip A82725C7C7BBA8E116F31030857BD3DE099FF5B7C40248E04A1DB425A617318E

Stable 22.4.81.1532

sha256_exe 0DD1952B8EE8A56F77FBA968366794BFA58ABEFC38151192D378EAF35607091F
sha256_zip 64F4918CE265ED58EC98996516D59AA97BB7BBC614AAD644E2F90C9DAB22F106

Note

Sensors

Discontinued Sensors with PRTG 22.4.81

With PRTG version 22.4.81 we discontinue the following sensor types: Dropbox sensor, Google Drive sensor, Google Analytics sensor, Microsoft OneDrive sensor. These sensor types were announced as deprecated with PRTG version 22.3.78.1873. If you run any of these sensor types they will show a down status when you update your PRTG installations to version 22.4.81. You can pause existing sensors afterwards but you will not be able to deploy them anymore. For further information about sensor deprecation and discontinuation in general as well as successor sensors and sensor alternatives please see our Knowledge Base articles: What do deprecation and discontinuation in the context of sensors mean? and What sensors are deprecated and what are their successors or alternatives?

Note: We also announced the deprecation for the Amazon CloudWatch sensors with PRTG 22.3.78.1873 and that they will be discontinued with PRTG 22.4.81. However, since these sensor types still have a high utilization rate we will postpone their discontinuation until further notice.

Lab

Sensors

HTTP v2

You can try out the experimental HTTP v2 (BETA) sensor that we introduce with this PRTG version. This sensor allows you to send a HTTP request (HEAD, GET or POST) and use placeholders, similar to the REST Custom v2 sensor.

Ping v2

You can try out the experimental Ping v2 (BETA) sensor that we introduce with this PRTG version. This sensor keeps the basic ping settings to send one single ping or send multiple ping requests and comes with a new setting Inverted Error Status. If you select Enable for this new setting, the sensor shows a Down status if the target device is reachable.

Note: This setting is currently only available during sensor creation, however, you can change the relevant lookup in the reachable channel afterwards to disable the Inverted Error Status.

Multi-Platform Probe: Both HTTP v2 sensor and Ping v2 sensor work with the multi-platform probe that we first mentioned in the PRTG 21.4.73.1656 release notes when the multi-platform probe started its initial alpha phase. For more information please see our Knowledge Base article: https://kb.paessler.com/en/topic/90140

Lab

New UI

Sensors	The sensor information on the sensor overview page now displays placeholders while the object information is loading. We fixed an issue for the Filter by keywords search option on the sensor list.
Channels	The primary channel of a sensor now has a pin icon indicator in the card for sensor channels. We fixed an issue for primary channels that caused an unknown error. The issue occurred only when the primary channel of the sensor had not yet received any data.
Web Interface	We implemented a new subpage for sensors that shows all limit channels in interactive line graphs. You can select a timespan for the graphs from predefined options: live, short, medium, long. We added time ranges to the timeseries interval picker that is available in the Graphs tab of a sensor. We fixed an issue where deleting objects, likes sensors, devices and groups, led to an unknown error. You will now receive a proper message for objects like sensors, devices and groups when they are moved to a paused status.

Lab

New API

API

We fixed an issue for sensor channels with lookup values that were not correctly formatted. The values are now displayed as percentages. The issue occurred in the /api/v2/experimental/timeseries/{id}/{type} endpoint.
We fixed an issue for new created devices in the experimental settings endpoints /experimental/devices/ID/settings and /experimental/sensors/ID/settings that led to a 404 not found error when you performed a get request.
You can now get information about settings and structure of a device with the GET endpoint /api/v2/experimental/devices/{id}/settings that we first introduced with PRTG 22.4.80.1553 for the experimental section.

PRTG application server

We improved stability and performance of the PRTG application server.

Improved

Various

All parts of PRTG	Various other minor fixes and improvements, updated user manual.
Languages	We updated the German and Spanish language files.

October 27th 2022 – Version 22.4.80.1542

Note

Installer

Security

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Preview 22.4.80.1542

sha256_exe A864F30FD2C3EE85C8D79486CEC04E0ED61B1F13D545537B8E55F9159F3FF0C9
sha256_zip CD451ADE4EE3A05E2449DE6612A99E1B00DC8A81AA7A0FA082BC982ED5D3249D

Fixed

Probe

Connection

We fixed an issue for probes that in some cases were disconnected due to a false connect timeout value. The issue occurred when you updated to the previous preview version 22.3.80.1498.

Improved

Languages

All languages

We updated and improved all language files.

October 5th 2022 – Version 22.3.80.1498

Blog article

By Michael Becker • Nov 21, 2022

New PRTG release! Two new sensors and an update for all language files.

PRTG 22.4.80.1553 is now available in the stable release channel! This version comes with the experimental NetApp SnapMirror v2 sensor, the experimental Port v2 sensor, and an update for all...
Read the complete blog post here

Improved

Security

Installer

You can verify the authenticity of the PRTG installer with the Secure Hash Algorithms for the following versions and release channels:

Stable 22.4.80.1553

sha256_exe D02BE6A5A28ACE2C0EDF905BAFBC54542F5EF067206CE2FBF92E1472E4D6E338
sha256_zip A2DE8530143F750AEE1429CFF71D408CC9155E01E9E4E6667D9C77F081A6DEC1

Preview 22.3.80.1498

sha256_exe 12092FA3FC6DEDE54B246CFC9C445328862B21E04A3A63B1D79888AC71A37911
sha256_zip D985BCFD406B498C0D35FB0F2172738A34CCD6C63F5679AF015B85668D201F50

They will be documented in the release notes also for future versions. These hashvalues confirm the integrity of the PRTG installer and that it originates from a trusted source.

Improved

Sensors

Microsoft 365 Service Status Advanced

We improved the filtering process of issues from the Graph API for the Microsoft 365 Service Status Advanced sensor.

Fixed

Sensors

Redfish Power Supply	Your Redfish Power Supply sensors now handle null values correctly and work again as expected. In some cases, the sensor failed with the following error message displayed in the Result of Sensor Log: The queried field Status.Health has an unknown value: The following reverse lookup value is invalid: . Valid reverse lookup values are: Critical, OK, Offline, Warning.
Veeam Backup Job Status	We fixed an issue for the Veeam Backup Job Status sensor where the login on the Veeam Enterprise Manager failed with the message Enterprise Manager Login failed: 401: Unauthorized due to a missing slash sign in the /api/sessionMngr/? API call.

Changed

Sensors

Cloud HTTP sensor, Cloud Ping sensor

With PRTG version 22.3.80 we discontinue the Cloud HTTP sensors and Cloud Ping sensors, for which you received a to do ticket for with PRTG 22.3.78.1873. If you run Cloud HTTP sensors and Cloud Ping sensors on your PRTG installation they will be paused automatically to preserve the sensor history. These sensor types will be replaced with their successor versions Cloud HTTP v2 sensor and Cloud Ping v2 sensor when updating to PRTG version 22.4.80. Please also see our Knowledge Base article about the migration of the Cloud sensors: https://kb.paessler.com/en/topic/91091

Lab

Sensors

NetApp System Health v2	We fixed an issue for the NetApp System Health v2 sensor (BETA) that in some cases displayed the error message The following reverse lookup value is invalid: multi_path_ha. The issue was caused by a missing status in the relevant lookup file.
NetApp v2 sensors	For the NetApp LIF v2 (BETA) sensor we fixed an issue in the Throughput Read, Throughput Total and Throughput Write channel settings that are now configured as counter channels, as well as the NetApp NIC v2 (BETA) sensor channels Link Down Count, Receive Errors and Transmit Errors where you can now also set limits. With this version comes the experimental NetApp SnapMirror v2 sensor (BETA) that we introduce additionally to the already released experimental NetApp v2 sensors (BETA) in PRTG 22.3.79.2108. The sensor supports the new ONTAP REST API as of ONTAP 9.6
Port v2	You can try out the experimental Port v2 sensor (BETA) that combines the features of the Port sensor and Port Range sensor. The sensor comes with the channels Maximum Connect Time, Open Ports, Closed Ports and Errors and will send you alerts depending on your settings about open or closed ports. Note: If you use a larger port range in the Port List of the sensor Settings, the sensor may remain in the unknown status for an uncertain period of time since it performs a scan for each port. To avoid this condition, please increase the Scanning Interval of the sensor.

Lab

New UI

Sensors

You can now switch between the channels of a sensor via dropdown menu in the channel detail dialog.
We added an overview tab with channel cards to the sensor view.

Lab

New API

API	The experimental section now includes a GET endpoint for the settings of a device /api/v2/experimental/devices/{id}/settings. This endpoint is still under development and does not include all features yet. We fixed an issue where cloned groups with added devices and sensors did not show the correct path for the sensor channels. We fixed an issue in the /experimental/timeseries/{id}/live endpoint that in some cases wrongly displayed gaps in graphs for precalculated data. We fixed an issue for the channel ID filter where you could not search for comma separated IDs with the endpoint /experimental/timeseries/{id}/{type}.
API Keys	You can now use API keys, that you can generate in the PRTG web interface under My Account in the Setup menu in the API keys tab, for the new API. With the API key you can authenticate yourself in the new API without implementing login credentials in a script or integration. The API keys can also be used once for endpoints in the Swagger UI for each Swagger session and they will be sent automatically afterwards with each request.
Documentation	We improved the documentation.
PRTG application server	The application server now handles errors correctly when a webserver cannot be created.

Note

Sensors

Discontinued Sensors with PRTG 22.x.81

With this version we inform you again about the deprecation of the following sensor types, for which you will receive a to do ticket for: Google Drive sensor, Microsoft OneDrive sensor, Dropbox sensor and Google Analytics sensor. Running sensors of these types will still work, but you will not be able to deploy them anymore.

We already announced the deprecation of the mentioned sensor types with PRTG 22.3.78.1873, as well as of Amazon CloudWatch sensor, Cloud HTTP sensor and Cloud Ping sensor. As of PRTG version 22.x.81 that we plan to release in Q4 2022, all these sensor types will be discontinued and stop working.

For further information about sensor deprecation and discontinuation in general please see our Knowledge Base article: https://kb.paessler.com/en/topic/90680

Note

Known Issues

Microsoft 365 Mailbox	The Microsoft 365 Mailbox sensor currently cannot match emails when you use special (non-ASCII) characters in the filter options Filter by 'subject' with Contains all or Contains any, for example words with accents like "é". This issue is located in the library where URL encoding does not work properly. As a workaround, you can manually URL encode those parts you want to have URL encoded. We will deliver a fix for this issue in the upcoming PRTG versions. Solved with PRTG 23.2.83.1760
PRTG Administration Tool	You currently cannot send logfiles from the tab Send Logs to Paessler via PRTG Administration Tool. Sending logfiles results in an error with the message Error connecting with SSL. As a workaround, please use the Contact Support option in the PRTG web interface that can be found in the Setup menu. We will deliver a fix for this issue in the upcoming PRTG versions. Solved with PRTG 22.4.81.1532
Security	PRTG is currently affected by a CSS vulnerability with low severity (CVE-2022-35739). For more information please see the Knowledge Base article: https://kb.paessler.com/en/topic/91149 Solved with PRTG 23.2.83.1760
Zoom Service Status	Some zoom components that belong to regions in the Zoom Service Status sensor will be displayed as channels multiple times. Regions have been introduced by Zoom recently and components have the same naming as regions. The Zoom Service Status sensor is not updated yet to use the Zoom structure for components. We are currently working on a fix for this issue. Solved with PRTG 22.4.81.1532

Note

Update Notes

Cache recalculation

The update to this PRTG version will immediately cause a cache recalculation upon starting the PRTG server. While PRTG is usable during the cache recalculation, it will considerably consume more hardware resources like CPU and memory. Depending on your monitoring configuration, you may encounter negative effects on the performance of PRTG during this process. We recommend that you reserve extra time for the PRTG update.

Tree version update

The configuration file of this version is not downwards compatible with previous PRTG versions.

Improved

Various

All parts of PRTG	Various other minor fixes and improvements, updated user manual.
Languages	We updated and improved all language files.

September 13th 2022 – Version 22.3.79.2107

Improved

Languages

German and Spanish

We updated the German and Spanish language files.

Fixed

Maps

Public maps

You can access public maps without login again. This did not work in the previous preview version 22.3.79.2073.

Fixed

Sensors

NetFlow sensors	NetFlow sensors show available IP addresses on which PRTG listens to NetFlow packets again. This was not always the case in the previous preview version 22.3.79.2073.
SNMP v3 sensors	We removed the update of the net-snmp library again, as well as the enhanced authentication methods and encryption types for SNMP v3. Sensors that use SNMP v3 caused increased memory usage in the previous preview version 22.3.79.2073 due to a memory leak in the updated library.

September 1st 2022 – Version 22.3.79.2073

Blog article

By Michael Becker • Sep 30, 2022

New release! PRTG version 22.3.79 is available in the stable channel.

PRTG 22.3.79 is now available in the stable release channel! This version comes with the new Microsoft 365 Mailbox sensor, the new FortiGate System Statistics sensor, an update for OpenSSL...
Read the complete blog post here

New

Sensors

FortiGate System Statistics sensor

The new FortiGate System Statistics sensor monitors the system health of a Fortinet FortiGate firewall via the Representational State Transfer (REST) application programming interface (API). We released this sensor type as experimental sensor with PRTG version 21.4.73.1656.

Microsoft 365 Mailbox sensor

The Microsoft 365 Mailbox sensor monitors a Microsoft 365 mailbox. We introduced this sensor type as experimental sensor with PRTG version 22.3.78.1873 and implemented several improvements since then.

The filter option in the Microsoft 365 Mailbox Settings is now divided into Contains All and Contains Any to enable a filter for different words in mails. Please note that already created sensors that had the filter option Contains will have the option Contains All after updating to this version.
You can now choose different folders in your mailbox to monitor when you add the Microsoft 365 Mailbox sensor.
We removed an empty settings field for Microsoft OAuth 2.0 Specific that appeared when you added a Microsoft 365 Mailbox sensor. You can see the following information for the Microsoft OAuth 2.0 specific field when the sensor has been added in the sensor settings: The OAuth 2.0 authorization renew feature is currently under development. If you change OAuth 2.0 settings in Microsoft Azure that require a reauthorization, you must add the sensor anew.
On creation of the Microsoft 365 Mailbox sensor you will see a dialogue for the Shared Mailbox User where you can add a mailbox account from a different user.

New

Server

API

With PRTG version 22.3.79 you can create and manage API Keys for any PRTG User. The API Key can then be used as a parameter in any call instead of the username and password (or passhash) to interact with PRTG's HTTP API. The syntax for using the API Key looks as follows: &apitoken=myapitoken.You can find the new Tab API Keys on the Setup page under Account Settings and under System Administration in the User Accounts settings.

Improved

Sensors

Modbus sensors	You can now add up to ten Modbus values for the Modbus TCP Custom sensor and Modbus RTU Custom sensor in the Modbus Channel Specific settings to monitor your metrics.
NetFlow sensors	The sensor types NetFlow v5, NetFlow v9, and their custom variants are now able to listen for UDP packets on IPv6 addresses.
Sensor Security	We improved the method of password transmission for the Exchange PowerShell, Citrix and EXE sensor types to make them more secure. The transmission happened in cleartext format before and is now encrypted so that the passwords are no longer visible in Windows Event Log or Task Manager. Improved sensor types are as follows: Exchange Backup (PowerShell) sensor Exchange Database (PowerShell) sensor Exchange Database DAG (PowerShell) sensor Exchange Mail Queue (PowerShell) sensor Exchange Mailbox (PowerShell) sensor Exchange Public Folder (PowerShell) sensor Citrix XenServer Host sensor Citrix XenServer Virtual Machine sensor Hyper-V Cluster Shared Volume Disk Free sensor RADIUS v2 sensor SIP Options Ping sensor HTTP Advanced sensor HTTP Transaction sensor
Script sensors	We added a new section Credentials for Script Sensors for placeholders in the sensor Settings where you can enter your credentials as parameters and which are displayed as masked. The following sensors support the new placeholders %scriptplaceholder1 up to %scriptplaceholder5: EXE/Script sensor, EXE/Script Advanced, SSH Script sensor, SSH Script Advanced sensor, Python Script Advanced sensor. You can use the new placeholders in the parameter field for Command-line Parameters.

Improved

Security

Server

We updated our OpenSSL libraries to version 1.0.2ze that patches the CVE-2022-1292 vulnerability. The c_rehash script does not properly sanitise shell metacharacters to prevent command injection, where attackers could execute arbitrary commands with the privileges of the script.

Changed

Sensors

EXE/Script sensors

With PRTG Version 22.3.79 you won't be able to use DLL files as sensors anymore. We removed this feature for EXE/Script sensor and EXE/Script Advanced sensor in the Sensor Settings for the EXE/Script function since it will be deprecated.

Fixed

Sensors

AWS Cost sensor	The AWS Cost sensor now correctly calculates the forecast values again in the given forecast channels.
Core Health (Autonomous)	We improved the stability of the Core Health (Autonomous) sensor. Under certain circumstances, the sensor wrote error messages to the core.log file with each sensor scan. The Core Health (Autonomous) sensor as well as the Application Server Health (Autonomous) sensor show the correct status again when you deactivate the new UI and new API instead of remaining in status Unknown.
FTP sensor	We fixed an issue for the FTP sensor where in some cases the sensor displayed the error message OK (530 - Login incorrect.) but nevertheless stopped working. You can now use the FTP sensor again even if it cannot log on to the FTP server because of a wrong password. The error message shows that the credentials are incorrect but the sensor remains in the up status.
HTTP sensors	We fixed an issue with SNI inheritance affecting HTTP sensors. In previous versions, HTTP sensors showed a down status if the parent device had an IP address as host and the affected sensor was set to Inherit SNI from parent device. The error message in this case was Error connecting with SSL or similar. We improved the compatibility of HTTP sensors with certain web servers. HTTP sensors now only set the content-type application/x-www-form-urlencoded on POST requests because using it with GET requests resulted in a down status in some cases.
HTTP Transaction	We fixed an issue for the HTTP Transaction sensor where HTTP requests did not work anymore because the sensor created a new Result of Sensor logfile with every scan and exceeded the Windows character limit at some point. The sensor now uses the initial logfile again.
Microsoft Azure Virtual Machine	Your Microsoft Azure Virtual Machine sensor now displays all existing virtual machines from your Azure environment in the list. The list only showed 50 virtual machines even if there were more available.
NetApp LUN	We fixed an issue with the NetApp LUN sensor where in certain cases the sensor showed the message error and stopped working due to LUN data that could not be found.
SSL Certificate	The SSL Certificate sensor now also works when monitoring endpoints that require client authentication. In previous versions, the sensor showed a down status with the error message Error getting certificate information: Not Connected in such cases.
Sensor creation	PRTG now aborts the scan for available monitoring items and shows a suitable error message in the Add Sensor dialog if the target URL is invalid or the target device does not respond. In previous versions, the meta-scan when adding a sensor never finished and the dialog window got stuck in such cases.

Fixed

Server

Login	Failed login attempts are now logged again in the WebServer.log. In the previous PRTG versions, the failed login attempts were not listed anymore to comprehend why Overload Protection is active. For more information about Overload Protection please see our Knowledge Base article: https://kb.paessler.com/en/topic/25523
Memory usage	We fixed several smaller memory leaks on the PRTG server.
Security	We fixed an issue for SSL passwords in the Core Activation Log that were displayed in a readable format and that are now masked again. The issue only appeared for the Log in Debug Level.
Start-up	We improved the underlying process of restarting and updating the PRTG server. In previous versions, a check for CSRF tokens could possibly interfere with the server start.

Fixed

WebGUI

Contact Support

We replaced the old link for our Contact Support options on the pages Help and Support Center and Change License Key in PRTG with the new one redirecting to our Helpdesk portal.

Lab

Sensors

Cisco Meraki sensors	The experimental sensor types Cisco Meraki License BETA and Cisco Meraki Network Health BETA now include the organization name in the instance name so that you can easily recognize to which organization the Meraki sensor refers to.
FortiGate VPN Overview sensor	We fixed an issue for the FortiGate VPN Overview sensor where VPN tunnels were shown as down even if the tunnels were up, due to a not linked dial-up entry for the parent link.
NetApp v2 sensors	You can try out the experimental sensor types NetApp Aggregate v2 (BETA), NetApp LIF v2 (BETA), NetApp NIC v2 (BETA), NetApp Physical Disk v2 (BETA), NetApp I/O v2 (BETA), and NetApp LUN v2 (BETA) that support the new ONTAP REST API as of ONTAP 9.6. We introduce new NetApp sensors based on REST API as with ONTAP 9.6 NetApp delivers a new RESTful API for ONTAP based storage systems. Note: You must have ONTAP REST API version 9.11 or higher to see two additional channels, Battery State and Storage Configuration, that we introduced with NetApp System Health v2 sensor. You also need ONTAP REST API version 9.11 or higher to create an NetApp I/O v2 sensor.

Lab

New UI

Controls	The back button now works as expected again on all pages in the new PRTG web interface. When the Show all sensors view on a Device Overview is selected, the view is now kept when opening a sensor and using the back button to navigate back to the Device Overview. You can now scroll horizontally and vertically on object information cards as expected again.
Errors	We updated several error messages. They now contain more information about the corresponding objects and details about the failed object actions.
Sensors	You can now update the acknowledge message and the duration until which a sensor stays in the Down (Acknowledged) status.
Web interface	Breadcrumbs are now dynamic and will be truncated if they exceed a certain length. Items in the Device List are now sorted as expected again. The URL of a device tree now reflects the filter status of the device tree to allow users to share specific device tree views.
Web interface	We have improved the visibility of the buttons in the filter bar on small screens. We have improved the Reset filter button icon to clarify its function. The new PRTG web interface now displays the correct error page if the PRTG application server is not available. The Overview, Device List, and Sensor List tabs are now in horizontal orientation. You can now see all details about an object on its Object Information page. We updated and improved the layout of object headers. You can now right-click any sensor and select Show Channel Details to see the current measurement, limits, minimum and maximum measurements, and lifetime average or the lookup definition and status of the primary channel of the selected sensor. You can also click any channel on the sensor's Overview tab to open the channel details.

Lab

New API

Documentation	We improved the documentation.
PRTG application server	The results returned by the /settings/public endpoint now contain graph setting data. We fixed a bug that caused an internal error if the ExecutionTimeoutInSecond was set to -1. We moved the /sensors/{id}/settings endpoint from the sensors section to the experimental section. The new URL path is now /experimental /sensors/{id}/settings. We improved the security of the PRTG application server.

Improved

Various

Languages	We updated the German and Spanish language files.
All parts of PRTG	Various other minor fixes and improvements, updated user manual.

August 04 2022 - Version 22.3.78.1866

Blog article

By Michael Becker • Aug 17, 2022

PRTG version 22.3.78 is now available in the stable release channel

The latest version of PRTG comes with the new AWS RDS v2 sensor, which leaves beta status and is now fully supported, and the experimental Microsoft 365 Mailbox sensor, which is compatible with...
Read the complete blog post here

New

Sensors

AWS RDS v2 sensor

The new AWS RDS v2 sensor monitors the performance of an RDS database instance via the AWS API and will be the successor of the Amazon CloudWatch RDS sensor. We released this sensor type as experimental sensor with PRTG 21.3.71.1416.

Improved

Sensors

IMAP & POP3 Roundtrip sensors

We updated the defaults for Transport-Level Security in the sensor Connectivity settings. The new default port for IMAP sensor and SMTP&IMAP Round Trip sensor will be port 993. For POP3 sensor and SMTP&POP3 Round Trip sensor it will be port 995. These sensor types now use Enforce Transport Level Security as default in the Connectivity settings.

Fixed

Sensors

AWS EC2 v2 sensor	You can add the AWS EC2 v2 sensor again as expected even if some services in a region cannot be accessed. In rare cases the sensor failed with the error message You are not authorized to perform this operation.
Cloud v2 sensors	We fixed an issue for the Cloud HTTP v2 sensor and Cloud Ping v2 sensor that caused the sensors to run into an error with the message The queried field "response_time" is empty. The Cloud HTTP v2 sensor now inherits the Proxy Settings for HTTP Sensors that are given in the parent device.
FTP sensor	We fixed an issue for the FTP sensor that failed in certain configurations after updating to the last PRTG version 22.2.77.2204. The issue occurred when the sensor tried to connect during the authentication step and therefore the sensor came up with the error message Start SSL negotiation command failed. (SSL/TLS not available).
HTTP Advanced sensor	You now receive a proper error message for your HTTP and HTTP Advanced sensor when the Proxy server requires credentials in the Proxy Settings for HTTP Sensors.
HTTP Apache sensor	We fixed an issue where HTTP Apache sensors consumed to much memory, resulting in a memory leak on the PRTG probe system.
Redfish System Health sensor	You now receive a proper error message for your Redfish System Health sensor when a drive of an according controller does not report back. Before, the sensor only reported that the request had failed.
SSH sensors	To increase our support for older SSH systems, we extended our list of encrypted algorithms for the SSH sensors. Affected sensors, like the SFTP Secure File Transfer Protocol sensor, ran into an error when, for example, the SSH server for Windows did not support secure algorithms. Your SSH sensors will now work again as expected. You can find a list of supported SSH algorithms here in our Knowledge Base article: https://kb.paessler.com/en/topic/90689.
SNMP Fujitsu System Health v2 sensor	In certain cases, the SNMP Fujitsu System Health v2 sensor could not be created via auto-discovery device template. Adding the sensor with auto-discovery now works again as expected.
WMI Vital System Data Sensor	You can add the WMI Vital System Data Sensor again as expected. The sensor now correctly reports Bytes Received and Bytes Sent in the appropriate channels, these values were previously inverted. Only new created sensors were affected by this issue.

Fixed

Server

API	You can set the geolocation for your probes again with API call /api/setlonlat.htm. In very rare cases, acknowledged alarms for sensors that exist on a remote probe which is added to a cluster system and which reports to both nodes were not synced to the master node. The issue occurred with api call /api/acknowledgealarm.htm. Your acknowledged alarms will now be synced to the master node if you use the api call for down sensors on a remote probe within a cluster system.
Stability	We fixed an issue that led to access violations in the Core.log when objects in PRTG were deleted while auto-discovery was running.
Passwords	We fixed an issue in the CoreWebServer.log that contained readable passwords and passhashes. This occurred only in cases when the login with password or passhash failed.

Changed

Sensors

Common SaaS sensor

We removed the Common SaaS sensor from the auto-discovery as it will be discontinued in upcoming PRTG releases. The sensor is no longer created during initial and manually triggered auto-discovery.

Python Script Advanced

PRTG Version 22.2.77.2204 broke compatibility with pip.exe install (to install Python packages). With this PRTG release we have removed support for this command to prevent unexpected errors. As of now the only supported way of installing a Python package to use Python Script Advanced sensor is python.exe -m pip install . Please also see our Knowledge Base article for more information about Python installation: https://kb.paessler.com/en/topic/90686.

Changed

Tree Version

Tree Version Update

The configuration file of this version is not downwards compatible with previous PRTG versions.

Lab

Sensors

FortiGate VPN Overview sensor	We improved the experimental FortiGate VPN Overview sensor concerning data that is received from the FortiGate API.
Microsoft 365 Mailbox sensor	You can try out the experimental Microsoft 365 Mailbox sensor that we created to be ahead of the deprecation for basic authentication. The Microsoft 365 Mailbox sensor authentication option is based on OAuth2. Microsoft is retiring basic authentication starting in October and IMAP and POP3 including Roundtrip sensors will stop working accordingly. We are looking forward to receive your early feedback for the experimental Microsoft 365 Mailbox sensor that you can send to [email protected].
NetApp	For the NetApp System Health v2 sensor and NetApp Volume v2 sensor we made the User Name in the settings for Credentials for NetApp visible, it was masked before. Due to this change you need to pause, resume and rescan these NetApp Beta sensors manually to make them work again.

Lab

New UI

Controls	The refresh timer on the bottom of the new PRTG web interface is now part of the tab index again and can be focused via keyboard navigation as expected.
Device tree	We have added a new resizable split-screen mode for the device tree.
Device list	Sorting items by probe name or location now correctly takes empty fields into account again.
Sensors	We fixed an issue where objects were not paused and alarms were not acknowledged if the entered message exceeded the maximum message length. We added a validation for the pause message field and acknowledge message field that does not allow messages that exceed the limit of 1,500 characters. You can now pause large numbers of sensors as expected again.
Web interface	We have improved the visibility of the buttons in the filter bar on small screens. We have improved the Reset filter button icon to clarify its function. The new PRTG web interface now displays the correct error page if the PRTG application server is not available. The Overview, Device List, and Sensor List tabs are now in horizontal orientation. You can now see all details about an object on its Object Information page. We updated and improved the layout of object headers. You can now right-click any sensor and select Show Channel Details to see the current measurement, limits, minimum and maximum measurements, and lifetime average or the lookup definition and status of the primary channel of the selected sensor. You can also click any channel on the sensor's Overview tab to open the channel details.

Lab

New API

Documentation	We improved the documentation.
PRTG application server	The PRTG application server now returns the correct error response if the duration in the request exceeds the maximum duration. Pending requests no longer prevent the PRTG application server from stopping.
Swagger UI	We updated Swagger UI to the latest stable version to close a potential XSS vulnerability.

Improved

Various

All parts of PRTG

Various other minor fixes and improvements, updated German and Spanish language files, updated user manual.

Note

Sensors

Discontinued Sensors with PRTG 22.x.81

We announce the deprecation of the following sensor types that you will receive a to do ticket for: Amazon CloudWatch sensors, Dropbox sensor, Google Drive sensor, Google Analytics sensor, Microsoft OneDrive sensor, Cloud HTTP sensor, Cloud Ping sensor. We will discontinue these sensor types with PRTG version 22.x.81 that we plan to release in Q4 2022. Running sensors of these types will still work for some more versions, but you will not be able to deploy them anymore. For further information about sensor deprecation and discontinuation in general please see our Knowledge Base article: https://kb.paessler.com/en/topic/90680.

Gitlab Build Status sensor

With this version we discontinue the already deprecated Gitlab Build Status sensor. The sensor was deprecated with PRTG 21.1.65.1767 and will now no longer provide any data. You will as well receive a notification with further instructions if you run this sensor.

Note

Known Issues

Microsoft 365 Service Status sensor

Your Microsoft 365 Service Status sensors and Microsoft 365 Service Status Advanced sensors will run into an error with the message An error occurred. To resolve this issue, try to pause and resume the sensor or check your settings. (code: PE270) when updating to this PRTG version. You need to pause and resume these sensor types to make them work again.

Note

Paessler PRTG Hosted Monitor

Map backgrounds, Device templates

Your additionally added map backgrounds and device templates are available again on Paessler PRTG hosted monitor installations.

June 20th 2022 – Version 22.2.77.2201

Improved

Languages

All languages

We updated and improved all language files.

Fixed

Probes

Memory usage

We fixed an issue that appeared in the previous preview version 22.2.77.2033 where PRTG probes showed too high memory usage under specific conditions, resulting in a memory leak on the PRTG probe system. Please note that with certain configurations memory usage still might be a bit higher than in previous versions.

Fixed

Server

Cluster	PRTG System Administrator user accounts can open and edit settings under Setup on cluster failover nodes again. In the previous preview version 22.2.77.2033, PRTG System Administrator users could not open the setup pages on a failover node and received the error message Read-only user accounts are not allowed to access this web page.
Single sign-on	Single sign-on correctly validates the used PRTG license again. This did not properly work in the previous preview version 22.2.77.2033.

May 27th 2022 – Version 22.2.77.2033

Blog article

By Michael Becker • Jul 4, 2022

PRTG release 22.2.77 comes with a new Python distribution

PRTG version 22.2.77 is now available in the stable release channel and comes beside a new Python distribution, a security improvement for maps and an update for all language files with many...
Read the complete blog post here

New

ITOps Board 3.5

Elasticsearch Upgrade	ITOps Board has been updated to use Elasticsearch 7.17.0.
New SLA Report	This release introduces a new PDF report for SLA availability statistics across multiple business services. The report allows you to view SLA statistics on a weekly or a monthly basis, and contains the following information: Report summary, combined SLA statistics, individual SLA statistics.
Enhancements to Boards	The Boards page has been enhanced to improve loading time and provide additional page view and filtering options. You can now choose to show a maximum number of boards on the page; you can reduce the page load time by decreasing the number of boards to show. The Filters panel contains the following page view and filtering options: Display Top, Visualize by, Sort by, Display Board States, Health Rollup Types, Exclude Child Boards, Display Boards with.

Improved

Security

Maps	We added a validation for the image upload in maps that minimizes a potential risk in uploading files with arbitrary content.

Improved

Installer

Command line parameters

We added the command line parameters /datadir and /snmpCommunityStrg to change the PRTG data path and the SNMP community string at first installation via command line.

Changed

Sensors

Python Script Advanced

With PRTG version 22.2.77 we deliver a new Python distribution. Python distribution 3.9.12 includes security patches, for example CVE-2021-3177, and several other improvements, as well as we renamed the Python helper library from prtg to paesslerag_prtg_sensor_api.

After installing PRTG version 22.x.77, PRTG creates a ticket that informs you about the Python update. Please make sure your custom Python scripts are compatible with Python version 3.9.12. You only need to consider the change if you are using the Python Script Advanced Sensor.

For more information, see our Knowledge Base article https://kb.paessler.com/en/topic/90484.

Fixed

Sensors

Auto-Discovery	We fixed an issue that occurred for several newer sensor types during auto-discovery. The sensors could not be added if an additional scan for a scheduled auto-discovery was carried out, however, it worked for the first scan. One affected sensor was, for example, the Veeam Backup Job Status Advanced sensor. The auto-discovery options now work again as expected.
Channels	Newer sensor types that previously displayed bandwidth measurements in Bytes only now take the configured channel unit configuration for Bytes (Bandwidth) into account. We fixed this behavior for sensor types like Amazon CloudWatch, WMI Logical Disk v2, and WMI Physical Disk v2. Also newer sensor types now include channel unit configuration like AWS EBS v2 and AWS RDS v2, as well as custom sensor types like the EXE/Script Advanced sensor.
HTTP sensors	We fixed an issue where the option for SNI inheritance did not work correctly for affected sensor types HTTP sensor, HTTP Advanced sensor and HTTP Data Advanced sensor. Note: If you use the option Inherit SNI from parent device for the mentioned sensor types, you need to enter the IP address as host name in the parent device settings. Otherwise your sensors may run into the error with the message Error connecting with SSL.
Microsoft Azure SQL Database	The Microsoft Azure SQL Database sensor is now able to monitor databases with umlauts in the name string.
Modbus sensors	We improved the connection stability of Modbus RTU Custom and Modbus TCP Custom sensors. In certain cases, the Modbus sensors switched between warning and up status and returned an unknown error.
Redfish sensors	We improved the handling of optional fields in the Redfish System Health sensor and Redfish Virtual Disk (BETA) sensor to avoid an unnecessary warning status. In such cases, the sensors went into a warning status with the message Error: The queried field "Status.State" is empty.
SNMP sensors	We fixed an issue that occurred in very rare cases when adding SNMP Traffic or other SNMP sensors ran into a timeout. The sensors could not be added successfully. This affected, for example, certain Cisco, Arista, and Fortinet devices.
SSL Security Check	SSL Security Check sensors now correctly show the message Weak Protocols Available if TLS 1.1 is accepted.
VMware Host Performance (SOAP)	The VMware Host Performance (SOAP) sensor now correctly displays watt as unit of the Power channel. Previously, the sensor showed a hashtag (#) instead.

Fixed

Server

Configuration	We fixed an issue for notifications where in rare cases missing lookup files caused the notification delivery for PRTG to stop working.
Notifications	We fixed an issue for notifications that stopped working in some cases due to unavailable lookups that create a todo ticket.
Reports	You can now generate PDF reports when you are logged in via single sign-on. This was not supported before.

Lab

Sensors

Cisco Meraki Network Health	We hardened the process of adding the Cisco Meraki Network Health (BETA) sensor.
PowerShell Security Enhancement	We improved the experimental PowerShell Security Enhancement feature for EXE/Script sensors that in some cases caused executed scripts to return 0 as a value. As a consequence, custom EXE/Script PowerShell sensors did not work anymore when you enabled the feature.
REST Custom v2	The REST Custom v2 (BETA) sensor now supports arrays in the request URL. Previously, the sensor shortened the arrays so that it did not return the desired values. Placeholders in the POST Body setting of the REST Custom v2 sensor now properly work. Previously, the resolution did not work after a first successful sensor scan.

Lab

New UI

Web interface	We added a new and revised device overview. We improved the visuals of the device overview. We overhauled the lookup bars, added new styles, and updated their behavior. We added gauges to the device overview that display the channel limits. We improved several features in the device list view.
Device tree	We added buttons that allow you to collapse and expand the device tree.
Navigation	Switching from the sensor overview to the mobile web interface no longer causes unknown errors. The dropdown list that opens when you click a breadcrumb now shows all child objects of the object again.
Controls	We fixed a bug that caused an unknown error when an object was deleted while it was opened by another user.
Filters	Filters set when viewing further sensor results on sensor status cards are now reset again if you use the go back function of your browser. Filters set for a probe now persist when switching between the overview, device list, and sensor list.

Lab

New API

PRTG application server

The system startup screen now shows the correct IP address or DNS name when the TCP port for the PRTG web server was changed. In previous version, an incorrect port was displayed when the PRTG application server was running.
We improved stability and performance of the PRTG application server.

Improved

Various

Languages	We updated and improved all language files.
All parts of PRTG	Various other minor fixes and improvements, updated user manual

Note

Sensors

StartTLS connectivity

For sensors using the StartTLS option Use transport-level security if available using StartTLS (default) in the Connectivity settings, you have to select Use transport-level security if available or better Enforce transport-level security if they use a TLS only port (which is 993 for IMAP or 995 for POP3). If a setting with StartTLS option is used, on a TLS only port in this case, the sensors now correctly try to connect to the server unencrypted first and may run into a timeout. Affected sensors are, for example, IMAP sensor, POP3 sensor, SMTP&IMAP Roundtrip sensor, SMTP&POP3 Roundtrip sensor.

Note

Known Issues

Access rights	Read-only users that have the option set for Allow user to change the account password under User Accounts on the Setup page, can currently not change their password in this version. The password needs to be changed by the administrator in these cases.
HTTP Apache sensors	The sensor types HTTP Apache ModStatus PerfStats and HTTP Apache ModStatus Totals may cause increased memory usage on the probe system in this version. Please increase the scanning interval of HTTP Apache sensors on your probe or reduce the number of running HTTP Apache sensors until the next PRTG version is available if too much memory is consumed.

April 27th 2022 – Version 22.2.76.1704

Fixed

Sensors

Microsoft Azure SQL Database

The Microsoft Azure SQL Database sensor works again. Due to a change in the Azure API, the sensor recently showed a down status with the error message The queried field "average" is empty. on all instances.

Improved

Languages

We updated the German and Spanish language files.

April 5th 2022 – Version 22.2.76.1624

Blog article

By Michael Becker • May 9, 2022

PRTG 22.2.76 comes with Okta SSO, a new sensor & security improvements

Just 6 weeks have passed since our last release and already a new one is ready. PRTG Network Monitor version 22.2.76 is now available in the stable release channel and comes with Okta as a new SSO...
Read the complete blog post here

New

Single sign-on

Okta

You can now use Okta as provider for single sign-on (SSO) to login to PRTG with multi-factor authentication. Okta is the second SSO provider that you can integrate to PRTG. Azure Active Directory (Azure AD) is available since PRTG 21.2.68. You can choose the SSO provider that you work with in the system administration of PRTG and configure the settings for your SSO access.

Please note that this feature is only available for Paessler PRTG Network Monitor, not for Paessler PRTG Hosted Monitor.

New

Sensors

AWS Alarm v2	The new AWS Alarm v2 sensor monitors your favorite metric and composite AWS alarms and will be the successor of the existing Amazon CloudWatch Alarm sensor.
AWS EBS v2	The new AWS EBS v2 sensor monitors the status and performance of an AWS EBS volume and will be the successor of the existing Amazon CloudWatch EBS sensor.
AWS EC2 v2	The new AWS EC2 v2 sensor monitors the performance of an Amazon EC2 instance and will be the successor of the existing Amazon CloudWatch EC2 sensor. Note: If you use the same IAM policy that you use for the Amazon CloudWatch EC2 sensor, you must update it. For more information, see the Knowledge Base: How do I set permissions for the Amazon Web Services (AWS) API key to use certain sensors in PRTG?
AWS ELB v2	The new AWS ELB v2 sensor monitors the performance of an AWS ELB load balancer and will be the successor of the existing Amazon CloudWatch ELB sensor.
HPE 3PAR Drive Enclosure	The new HPE 3PAR Drive Enclosure sensor monitors a drive enclosure of your HPE 3PAR storage system and shows status and temperature metrics.
HPE 3PAR Virtual Volume	The new HPE 3PAR Virtual Volume sensor monitors a virtual volume of your HPE 3PAR storage system and shows the status as well as used and free space on the volume.
Redfish Power Supply	The new Redfish Power Supply sensor monitors the status of the power supply of your servers, the power efficiency, and various other parameters.
Redfish System Health	The new Redfish System Health sensor monitors the system health of servers in your datacenter using the Redfish protocol from your servers' management controllers like Lenovo XClarity, HPE iLO, or Dell iDrac.
SNMP Rittal CMC III Hardware Status	The new SNMP Rittal CMC III Hardware Status sensor monitors the hardware status of a Rittal CMC III processing unit and shows the status of every attached external sensor.

Improved

Sensors

Modbus sensors	Modbus RTU Custom and Modbus TCP Custom sensors now support connection sharing for multiple unit IDs on the same device. Previously, connection sharing only worked for a single unit ID on a device, so that you could only create a few Modbus sensors until the maximum number of allowed sessions was reached.
MySQL v2	The MySQL v2 sensor now supports MariaDB version 10.6 as we updated the MySQL data library that PRTG uses to version 8.0.28.
PostgreSQL	The PostgreSQL sensor now supports TLS 1.2 connections as we updated the Npgsql library that the PostgreSQL sensor uses to monitor your database to version 6.0.3.
SSH sensors	We updated the SSH library that SSH sensors use to monitor the target devices. The update improves the security of SSH sensors.
Sensor security	We updated the logging library log4net that several sensor types use to version 2.0.14 to improve the security of PRTG. Affected sensor types are DICOM sensors, Exchange Mailbox (PowerShell), HL7, NetApp (cDOT/ONTAP) sensors, Windows Update Status (PowerShell), SQL v2 sensors.

Fixed

Sensors

Microsoft Azure SQL Database	The Microsoft Azure SQL Database sensor works again. Due to a change in the Azure API, the sensor recently showed a down status with the error message The queried field "average" is empty. on all instances.
Veeam Backup Job Status Advanced	The Veeam Backup Job Status Advanced sensor now supports the status Postprocessing and shows more expressive error messages in many cases instead of just Reason: Unknown. or The queried field "Reason" is empty.

Fixed

Server

XML	The View as XML button returns data again when you generate the XML from a sensor's Logs tab, for example.

Lab

Sensors

Cisco Meraki Network Health	The experimental Cisco Meraki Network Health (BETA) sensor now supports the uplink status not connected.
NetApp Volume v2	You can try out the experimental NetApp Volume v2 (BETA) sensor that supports the new ONTAP REST API as of ONTAP 9.6 and will be the successor of the existing NetApp Volume sensor.

Lab

New UI

Administration	You can now globally hide the “Activate New UI And New API (Alpha)” banner in PRTG. For more information, see the Knowledge Base: https://kb.paessler.com/en/topic/90566.
Improvement	We reduced the installation size of the new PRTG web interface.

Lab

New API

Objects	Objects that were moved or cloned now receive a correct update of their path.
PRTG application server	We fixed an issue that caused a start loop of the PRTG application server when the default port was blocked.
Performance	We have increased the performance of the PRTG application server.

Improved

Various

All parts of PRTG

Various other minor fixes and improvements, updated German and Spanish language files, updated user manual

Note

Sensors

Python Script Advanced

PRTG version 22.2.77 that we will publish in June 2022 will include a new Python distribution. We already inform you now about the change because your custom Python scripts must be compatible with Python 3.9 when you update to PRTG 22.2.77.

You only need to consider the change if you are using the Python Script Advanced sensor. For more information, see the Knowledge Base article https://kb.paessler.com/en/topic/90484.

Note

Known issue

Signature

In certain cases, the PRTG core server does not start anymore after updating to PRTG 22.2.76 and the log file core.log contains the message

Signature of \Program Files(x86)\PRTG Network Monitor\32 bit\PRTG Server.exe is not valid or
Signature of \Program Files (x86)\PRTG Network Monitor\64 bit\PRTG Server.exe is not valid

The issue mainly affects PRTG installations that are offline or have limited access to the internet and happens if the code signing signature fails due to a missing trust chain in the trusted root certificates of the Windows certificate store.

You can resolve the issue by adding the trusted root certificate for timestamp signature. For more information, see the Knowledge Base article https://kb.paessler.com/en/topic/90610.

March 24th 2022 – Version 22.1.75.1589/22.1.75.1602

Important

Security

Server

This version includes an important security update for your PRTG core server. We updated the OpenSSL library that PRTG uses to version 1.0.2zd, which patches the recently disclosed OpenSSL vulnerability CVE-2022-0778.

For more information, see the Knowledge Base: https://kb.paessler.com/en/topic/90462.

We recommend that you update as soon as possible.

Note: Under certain circumstances, the PRTG core server could not successfully start after updating to version 22.1.75.1569 or 22.1.75.1588. We fixed the issue with PRTG 22.1.75.1594.

March 11th 2022 – Version 22.1.75.1568

Improved

Languages

All languages

We updated and improved all language files.

Fixed

Sensors

Data tables

Data table pages on sensor data tabs appear in the correct order with newest entries on the first page again. In the last preview version 22.1.75.1521, the order of the data table pages was reversed.

Lab

New API

Performance

We fixed an issue that resulted in degraded performance of the PRTG application server on larger installations, which was also noticeable with longer loading times when using the new user interface with the last preview version 22.1.75.1521.

February 25th 2022 – Version 22.1.75.1521

Blog article

By Michael Becker • Mar 28, 2022

PRTG v. 22.1.75 includes a new NetApp sensor, improvements and fixes

Paessler PRTG release 22.1.75 is available in the stable release channel and includes the NetApp System Health (beta) sensor, improvements for single sign-on, and many fixes. iUpdate On March,...
Read the complete blog post here

Improved

Security

Server

PRTG now sanitizes channel names to close a potential XSS vulnerability. (CVE-2021-42695)

Improved

Sensors

Packet Sniffer

We updated the Npcap library that Packet Sniffer and Packet Sniffer (Custom) sensors use to monitor your traffic to version 1.60. The new version includes several fixes and improvements compared to the previously delivered version 1.10.

If you encounter issues with your Packet Sniffer sensors after the update, please see the Knowledge Base article https://kb.paessler.com/en/topic/86904

Improved

Server

Single sign-on

You have now the option to use GraphQL to retrieve group claims from Microsoft Graph when you integrate Azure Active Directory for single-sign on (SSO) in PRTG. With GraphQL, you can also properly create SSO user accounts that are member of more than 200 groups. The default approach for group claim retrieval is using an Access token as before.
The login with a new SSO user account now succeeds even if there already is a user account with the same login name that only differs in upper case and lower case letters.

Fixed

Sensors

HTTP Push Data Advanced	We improved the stability of the HTTP Push Data Advanced sensor. In previous versions, the sensor occasionally showed a down status with the error message could not bind socket after some time. The issue appeared in cases when there were more than one sensor of this type running.
Microsoft Azure sensors	Microsoft Azure sensors now can handle all name strings as specified in the Resource name rules by Microsoft. In previous versions, the Microsoft Azure SQL sensor, for example, could not handle whitespaces in elastic pool names and showed HTTP error 400 after creation.
SQL v2 sensors	SQL v2 sensors show data table values in the sensor message again if you enable the Use Data Table Value in Sensor Message setting. In previous versions, the defined value of the data table was missing in the message of the sensor types ADO SQL v2, Microsoft SQL v2, MySQL v2, PostgreSQL, and Oracle SQL v2.
Syslog Receiver	We improved the reliability of the Syslog Receiver sensor in case of probe restarts to reduce issues with blocked ports.

Fixed

Server

Historic data	You can generate historic data files in XML and CSV format via the web interface again. In the previous version, running historic data reports for sensors did not work via the web interface and returned an Unauthorized error if the file format was XML or CSV.
Stability	This version comes with a number of stability improvements for the PRTG core server.

Lab

Sensors

Cisco Meraki sensors	We improved the connection stability of the Cisco Meraki License (BETA) and Cisco Meraki Network Health (BETA) sensors. The sensors now also handle HTTP response code 429 that returns in case of breached request limits in a more comprehensible way. The meta-scan for available monitoring objects when adding the Cisco Meraki Network Health (BETA) sensor now succeeds even if the API access is disabled for some organizations so that you can still add the sensor in such cases.
NetApp System Health	You can try out the experimental NetApp System Health (BETA) sensor that supports the new ONTAP REST API as of ONTAP 9.6 and will be the successor of the existing NetApp System Health sensor.
Redfish sensors	We implemented several improvements for the experimental Redfish sensors. The experimental Redfish Power Supply (BETA) sensor can also monitor devices that return null for non-existent values. In previous versions, the sensor showed a down status in such cases. You can easier find Redfish sensors in the Add sensor dialog when you look for sensors that monitor devices of a specific vendor because the sensor descriptions now show supporters of the Redfish standard like Broadcom, Dell, Emerson, HPE, Intel, Lenovo, Microsoft, Supermicro, and VMware.
REST Custom v2	You can now define up to 5 individual placeholders for the experimental REST Custom v2 (BETA) sensor in the Credentials for REST API settings of devices. You can use the placeholders, as well as newly introduced placeholders for credentials, in the Request URL, POST Body, and Custom Header fields of the REST Custom v2 sensor. PRTG does not display the corresponding values in the sensor log nor in the sensor settings.

Lab

New UI

Device list	You can now select the Device List view to see all devices on root group, probes, or groups.
Web interface	The Welcome page and the page footer now contain information about the installed PRTG version and the selected release channel. Down (Acknowledged) status icons on the monitoring overview are no longer cropped.
Controls	The Open new UI button in the classic PRTG web interface in German language no longer causes the global sensor status symbols to overlap the search box.
Tables	We updated the style of linked sensor names in tables.

Lab

New API

POST Requests	We increased the maximum size of the request body of POST requests to 15 kB.
Sensors	The Core Health (Autonomous) sensor now keeps working as expected if you deactivate the new UI and API. The Sensor Factory sensor now sends added and deleted channels to the sensor data and overview endpoints of the new API as expected.
Certificates	The PRTG application server does not use a hard-coded fallback certificate anymore. If the PRTG application server cannot load the provided certificate, it stops the startup process.
Performance	We have increased the performance of the PRTG application server.
Documentation	We improved the documentation.

Lab

PRTG Desktop

Probe transfer

We improved the stability of the probe transfer when transferring large probe configuration files.

Improved

Various

Languages	We updated and improved all language files.
All parts of PRTG	Various other minor fixes and improvements, updated user manual

January 18th 2022 – Version 22.1.74.1829

Blog article

By Michael Becker • Feb 7, 2022

PRTG v. 22.1.74 comes with 3 beta sensors and security improvements

The first release of PRTG Network Monitor in 2022 is version 22.1.74, and is available in the stable release channel. It includes 3 beta sensors and a major security improvement. Here are the new...
Read the complete blog post here

Improved

Security

Server

We hardened PRTG against Cross Site Request Forgery (CSRF) attacks. This prevents changes to PRTG via web forms not originating from PRTG that attackers may use to trick PRTG users into performing requests with the user account's context. (CVE-2021-34547)

Note: API calls now always explicitly require credentials even if the user account is currently logged in in PRTG. Otherwise, PRTG will return Unauthorized. If you have issues with saving changes to settings, clear your browser cache with CTRL+F5 after updating and opening the PRTG web interface because we also updated the JavaScript version with this security improvement.

Improved

Sensors

AWS Cost	You can now create device templates that include the AWS Cost sensor. You can use the device templates to add AWS Cost sensors via auto-discovery.
DNS v2	The DNS v2 sensor now also considers the authority section of the DNS response when counting and matching DNS records. Monitoring PTR records now works the same way as with the DNS v1 sensor. You can only provide the IP address as Domain Name and do not need to manually add .in-addr.arpa anymore.
Veeam Backup Job Status Advanced	You can now also monitor file share backup jobs with the Veeam Backup Job Status sensor and with the Veeam Backup Job Status Advanced sensor. The sensors did not support this job type before. We also fixed the monitoring of replica and immediate backup copy jobs for which the sensors showed incorrect data in previous versions. We renamed the default primary channel Status of the Veeam Backup Job Status Advanced sensor to Last Result, which makes it clearer that this channel shows the status of the last backup job run. The separate Status channel that now appears shows the overall status of the backup job.

Changed

Sensors

Oracle Tablespace	We changed the name of the Database Size channel of the Oracle Tablespace sensor to Tablespace Size. Tablespace Size is the correct naming because this is what the channel monitors. The same is for the Tablespace Size on Disk channel that we accordingly changed as well.
SSL Security Check	We changed the TLS 1.1 (Strong) channel of the SSL Security Check sensor to TLS 1.1 (Weak). This means that the sensor will now show a warning status if the target device accepts TLS 1.1 connections. We also changed the TLS 1.2 (Perfect) channel to TLS 1.2 (Strong), which comes without a changed behavior for the sensor status.

Changed

Channel units

Channel Unit Configuration

We changed the default channel units for probes, group, devices and sensors. New PRTG installations and newly created probes, group, devices, and sensors with turned off inheritance now have the following units defined by default as you can check in the Channel Unit Configuration settings.

Bytes (Bandwidth): MB and Mbit/sec
Bytes (Memory): GB
Bytes (Disk): GB
Bytes (File): MB

The default units on existing PRTG installations are not changed and still have KB and kbit/second for bandwidth, MB for memory, MB for disk, and bytes for file.

Fixed

Sensors

SNMP Cisco CBQoS

Running an auto-discovery with a device template that includes SNMP Cisco CBQoS sensors now successfully adds sensors of this type. In previous versions, this did not work due to incorrect entries for this sensor type in created device templates and the sensors were not added.

Fixed

Server

API	Filtering in table API calls returns only exact matches again. In previous versions, the filter also returned objects if it matched their prefixes.
Cluster	PRTG properly synchronizes the settings of notification templates from the master node to failover nodes again. In previous versions, defined settings of newly created notification templates were not taken over on failover nodes, which could result in notifications not being sent from a failover.
Down (Acknowledged)	The sensor message of sensors in Down (Acknowledged) status shows the original error message again. The error message was missing for acknowledged sensors in previous versions.
Installation	The command line parameter /LANG for the language used in PRTG works again when installing PRTG via command line as specified in the Knowledge Base article What command line codes and exit codes can I use with Paessler setups? You can now even use /LANG for silent installations. In previous version, PRTG was always installed with the default English language file when using the command line for setup.
Libraries	We fixed the channel selection of notification triggers in cloned libraries. In previous versions, you could not select a sensor channel in the settings of speed, threshold, and volume triggers if the library was a clone.
Limits	You can save changes to sensor channels again even if another channel of the same sensor has the setting Enable alerting based on limits with no defined limits activated. In previous versions, the input validation failed in such cases and you received an Error (Bad Request) dialog window with the message The validation of the data you entered failed. You have set Alerting to limit-based, but have entered no limit value.

Lab

Sensors

Cisco Meraki License	You can try out the experimental Cisco Meraki License (BETA) sensor as of this version and monitor the status of your Meraki licenses. It shows days to expiration, license model, and license count.
Cisco Meraki Network Health	You can try out the experimental Cisco Meraki Network Health (BETA) sensor as of this version and monitor the health of Cisco Meraki network devices.
FortiGate VPN Overview	You can try out the experimental FortiGate VPN Overview (BETA) sensor as of this version and monitor VPN connections of your Fortinet FortiGate firewall. The sensor shows the number of connected SSL clients, as well as the number of both up and down IPsec tunnels.
REST Custom v2	The REST Custom v2 (BETA) sensor now supports Boolean values. If you select content type JSON and value type Integer, the sensor can map a Boolean value (false or true) to 0 or 1. Use Boolean lookups to get a neat display of the channel on the sensor overview tab. You can now also use email addresses in the Request URL of the REST Custom v2 (BETA) sensor. In previous versions, the sensor did not work with such URLs.

Lab

New UI

Context menus	You can now open the corresponding context menu if you right-click linked objects or headers.
Devices	You can now sort sensor lists based on the time since the last scan.
Notifications	Line breaks in notifications no longer break up single words.

Lab

New API

Sensors	Sensors now immediately display measurements after the start of the PRTG application server regardless of the sensor’s scanning interval.
Documentation	We improved the documentation.
PRTG application server	The PRTG application server can now always establish a connection to a PRTG core server via the default IP address 127.0.0.1:23580. Incoming channel information do not longer cause out-of-memory errors that led to crashes of the PRTG application server. We fixed an issue that caused high memory consumption by the PRTG application server.
Sensor Factory	The channels of the Sensor Factory sensor receive measurements as expected again.
Channels	Channels that are created after the first sensor scan work as expected again.

Lab

Multi-platform probe

Supported platforms

The multi-platform probe now supports ARM based systems with either ARMv7 or aarch64 architecture. This enables you to deploy your probe on systems like Raspberry Pi, AWS EC2 with Graviton CPU, and NAS systems, for example. See the Knowledge Base for more details: What is the Multi-Platform Probe and how can I use it?

Lab

PRTG Desktop

Probe transfer

You can now allow PRTG Desktop to access the configuration files of your probes to transfer a probe to another server. You find the setting Probe Transfer in the Experimental Features section of the PRTG web interface.

Note

Update notes

Cache recalculation

Tree version update

The configuration file of this version is not downwards compatible with previous PRTG versions.

Improved

Various

All parts of PRTG

Various other minor fixes and improvements, updated user manual, updated German and Dutch language files

December 1st 2021 – Version 21.4.73.1657

Improved

Languages

German and French

We updated the German and French language files.

Fixed

Sensors

SSL Certificate

The SSL Certificate sensor properly compares common name (CN)/alternative names (SAN) and address/SNI again. This did not work in the previous PRTG preview versions 21.4.73.1545 and 21.4.73.1581.

November 19th 2021 – Version 21.4.73.1581

Lab

Sensors

FortiGate System Statistics

You can now actually add the FortiGate System Statistics (BETA) sensor. In the previous preview version 21.4.73.1545, the sensor was missing in the Add Sensor dialog.

Lab

New UI

Welcome page

Overview and reference links on the welcome page now open the correct pages.

November 15th 2021 – Version 21.4.73.1545

Blog article

By Michael Becker • Dec 6, 2021

PRTG v. 21.4.73 comes with a new user interface, API and a new probe

With the release of Paessler PRTG version 21.4.73, which has been available since December 1st, we are happy to announce a lot of great news at once: A new, modern web interface A brand-new...
Read the complete blog post here

New

Notifications

OPC UA

You can now use OPC UA notifications to forward PRTG alerts to your northbound systems like SCADA, DCS, or any other system that has an OPC UA server. By creating an OPC UA notification template, you can build meaningful error messages that PRTG sends to your OPC UA server. This supports you in seeing and reacting on issues in your network infrastructure as fast as possible.

Improved

Sensors

Business Process	Requesting data of the Business Process sensor via the API now returns values in value_raw fields in a better consumable way.
DNS v2	You can now define multiple filter values for the DNS v2 sensor to filter for more than one IP address, for example.
Modbus sensors	The sensor types Modbus RTU Custom and Modbus TCP Custom now provide a timeout setting. If the reply from the target device takes longer than the defined Receive Timeout (msec), the request will be aborted and the sensor stops trying to connect.

Changed

Sensors

Lookups	You can now easier identify sensors with a missing or broken lookup file. Sensors that have an issue with their lookups will change their status to warning with the message At least one channel uses a lookup that is not available or could not be loaded. (PE272) as of this version to indicate that the sensor cannot properly monitor. In previous versions, you only received a ToDo ticket in such cases but affected sensors kept their status.
Microsoft 365 Service Status sensors	The sensor types Microsoft 365 Service Status and Microsoft 365 Service Status Advanced support the new Microsoft 365 Service Health and Communications Graph API as of this version. This change is necessary to seamlessly continue monitoring your Microsoft 365 services because Microsoft soon will shut down the current API version that the sensors used until now. Important: Both sensors now require the API permission ServiceHealth.Read.All to be able to retrieve data from Microsoft Graph and continue monitoring. For details, please see the Knowledge Base article How do I obtain credentials and set permissions for the Microsoft 365 sensors? Please also note that the Microsoft 365 Service Status Advanced sensor cannot monitor subservices anymore and will show the message Channel is deprecated for affected channels. We will remove the channels in an upcoming PRTG version.
Scanning interval	We changed the default scanning interval for several newer sensor types that we introduced over the last couple of PRTG versions.

Fixed

Sensors

Microsoft Azure Virtual Machine

The Microsoft Azure Virtual Machine sensor now shows a down status with an appropriate error message if the target device is not reachable anymore, for example, due to changed credentials. In previous versions, the sensor incorrectly showed a misleading up status with 0 values in such cases. We also improved the general stability of the sensor.

Fixed

WebGUI

Channel Unit Configuration

The dropdown menu for the unit of Bytes (Bandwidth) in the Channel Unit Configuration settings is properly shown again. In Google Chrome and Edge, it was difficult to select the desired unit due to display issues in previous versions.

Lab

Sensors

AWS v2 sensors	We implemented various improvements for the experimental AWS v2 sensors. The metric channel of the AWS Alarms v2 (BETA) sensor now shows a proper unit. The AWS EC2 v2 (BETA) sensor now only creates the channels Disk Read, Disk Read Ops, Disk Write, and Disk Write Ops if they receive values. Note: Running sensors of this type will show a down status after updating to PRTG 21.4.73 due to this change. Please add affected sensors anew. We added a lower error limit to the CPU Credit Balance channel of the AWS EC v2 (BETA) and AWS RDS v2 (BETA) sensors. Channel values below 1 will now trigger a down status because they indicate low performance. We generally hardened the approach how AWS v2 sensors retrieve data to avoid gaps in the sensor data.
AWS EBS v2	You can try out the experimental AWS EBS v2 (BETA) sensor as of this version and monitor the status and performance of an AWS EBS volume.
FortiGate System Statistics	You can try out the experimental FortiGate System Statistics (BETA) sensor with this version. The sensor monitors the system health of a Fortinet FortiGate firewall and shows CPU and memory usage, as well as uptime, session statistics, and conserve mode activity.
Network Share	You can try out the experimental Network Share (BETA) sensor with this version. The sensor monitors the number of files and folders on a network share via SMB or CIFS, as well as its size and the age of oldest and newest files.
Redfish Power Supply	You can try out the experimental Redfish Power Supply (BETA) sensor as of this version. The sensor monitors the status of the power supply of your servers, the power efficiency, and various other parameters.

Lab

New UI

Initial alpha release

We are working on a complete redesign of the PRTG web interface. The redesign is based on extensive user research and the feedback that we have received over the years. The user interface will be fully responsive and will follow the Web Content Accessibility Guidelines (WCAG).

Although the new UI is still missing many features, we decided to release the alpha version to give you the opportunity to try out the new UI, and to gather feedback during the early development process. Read all about the new UI here: I want to use the new UI and new API. What do I need to know?

Lab

New API

Initial alpha release

Our new RESTful API will enable you to easily automate your monitoring and to integrate it with other tools. Our goal is to build a comprehensively documented RESTful API that is consistent across all endpoints.

Although the new API is still missing many features, we decided to release the alpha version to give you the opportunity to try out the new API, and to gather feedback during the early development process. Read all about the new API here: I want to use the new UI and new API. What do I need to know?

Lab

Multi-platform probe

Initial alpha release

The new multi-platform probe will enable you to deploy PRTG probes on various platforms like Windows, Linux, and Docker. We are happy to now share the initial alpha version with you and gather your feedback during the early development process. You can already run a limited set of sensors on it but many features will follow later. Read all about the new multi-platform probe here: What is the Multi-Platform Probe and how can I use it?

Improved

Various

All parts of PRTG

Various other minor fixes and improvements, updated user manual, updated German and French language files

Note

Sensors

Event Log (Windows API)

The Event Log (Windows API) sensor will no longer work due to security changes from Microsoft and will be discontinued. For details, please see Event Tracing and Windows NTLM Elevation of Privilege Vulnerability.

We recommend that you pause existing sensors to store historic data. To continue monitoring, use the WMI Event Log sensor.

October 14th 2021 – Version 21.4.72.1598

Improved

Security

Server

An authenticated user with write access could leverage specifically crafted API calls to execute an arbitrary file on the PRTG core server system under the identity of the PRTG core server service. (CVE-2021-42253)

October 8th 2021 – Version 21.4.72.1539

Blog article

By Michael Becker • Nov 8, 2021

PRTG 21.4.72 with AWS Alarm v2 sensor and various fixes & improvements

Compared to the last releases of PRTG Network Monitor, this update does not contain many new sensors, but features several fixes and improvements. It comes with the experimental AWS Alarm v2...
Read the complete blog post here

Improved

Security

Server

This version includes an important security update for the PRTG core server. An authenticated user with write access could leverage specifically crafted API calls to create an Execute Program notification template that runs an executable file that is vulnerable to a form of directory traversal. This can lead to a potential Remote Code Execution (RCE) by running an arbitrary file existing on the PRTG core server system under the use of the Security Context of the Core Server Service. (CVE-2021-42253)

Many thanks again to the anonymous reporter.

Sensors

We improved the parameter handling of several database sensors to prevent external tools from logging them. The change improves the security of the sensor types ADO SQL v2, Microsoft SQL v2, MySQL v2, PostgreSQL, Oracle SQL v2, and Oracle Tablespace.

Fixed

Sensors

Microsoft Azure SQL Database	We hardened the detection mechanism of the database type when adding a new instance of the Microsoft Azure SQL Database sensor. The sensor showed a down status upon creation in previous versions if the database type had changed from single database to elastic pool or vice-versa.
Microsoft Azure SQL Database	You can now define a scanning interval for a running sensor that is lower than the initial scanning interval that was set when creating this sensor. This was not possible for several newer sensor types before this PRTG version.

Fixed

Server

API	Switching inheritance off and on with the setobjectproperty.htm API call works again.
History	Cloning a device now adds an entry to the History tab of the parent group on which the device clone is newly created.
Probe connections	Probes now automatically retry to connect to the PRTG server when their initial login to the server failed. This prevents certain cases where the sensors on the probe remained in the unknown status after starting the PRTG server.
Stability	We implemented several minor stability improvements for the PRTG core server.
Startup	We fixed the case where missing entries in custom language files prevented the PRTG core server from starting.

Fixed

WebGUI

User accounts

You can mark the passhash in your user account settings in Firefox again to easier copy and paste it.

Lab

Sensors

AWS Alarm v2	You can try out the experimental AWS Alarm v2 (BETA) sensor as of this version and monitor your favorite metric and composite AWS alarms with this sensor type.
AWS RDS v2	We implemented several minor improvements for the experimental AWS RDS v2 (BETA) sensor.
HPE 3PAR Drive Enclosure	We fixed an issue with the experimental HPE 3PAR Drive Enclosure (BETA) sensor that could not handle certain data that HPE 3PAR devices may return. The sensor showed a down status with a parsing error in such cases.
HPE 3PAR Virtual Volume	We added five new channels to the experimental HPE 3PAR Virtual Volume (BETA) sensor that show the full total of used and reserved space. We also renamed the channels User Space Total and Snapshot Space Total to User Space Reserved and Snapshot Space Reserved to better indicate what they monitor. The new channel names only apply to newly added instances of this sensor type.

Improved

Various

All parts of PRTG

Various other minor fixes and improvements, updated user manual, updated German language file

September 17th 2021 – Version 21.3.71.1413

Improved

Languages

German, French, Russian

We updated the German language file and implemented some minor improvements for French and Russian.

Fixed

Sensors

Microsoft Azure Subscription Cost	The Microsoft Azure Subscription Cost sensor works again. In the previous PRTG preview version 21.3.71.1360, the sensor showed a down status with the error message An error occurred. Request failed: HTTP request was not successful: 400: Bad Request.
Modbus sensors	We fixed connection issues of Modbus TCP Custom and Modbus RTU Custom sensors that appeared in the previous PRTG stable version 21.3.70. Modbus sensors were not able to connect to the target server if the initial attempt failed and showed a permanent down status with the error message The sensor could not retrieve data from the server or similar.

September 3rd 2021 – Version 21.3.71.1360

Blog article

By Sascha Neumeier • Oct 4, 2021

PRTG 21.3.71 with new IoT, AWS and Redfish sensors

Our latest version of Paessler PRTG Network Monitor is now available in the stable release channel.
Read the complete blog post here

New

Sensors

Beckhoff IPC System Health

The new Beckhoff IPC System Health sensor monitors the system health of a Beckhoff Industrial PC (IPC) via OPC UA. It shows available memory, CPU load, the temperature of CPU and mainboard, as well as the status of the RAID controller.

We initially released this sensor type as experimental sensor in PRTG 21.2.67.

Modbus RTU Custom

The new Modbus RTU Custom sensor connects to a Modbus RTU server and monitors up to five values returned by the device. With this sensor type, you can monitor, for example, temperature, humidity, and more inside a rack in your datacenter so that you can ensure your equipment operates within the defined ranges.

We released this sensor type as experimental sensor in PRTG 20.4.64 and implemented your feedback over the last couple of PRTG versions.

Improved

Sensors

MQTT Subscribe Custom

You can now create sensor channels from the value type Delta (counter) to calculate the difference between the last and the current value with the MQTT Subscribe Custom sensor. With this option you can monitor the power consumption of your heat pump, for example, to know if it is operating efficiently.

Improved

Server

API	The API call api/health.json now additionally returns the number of State objects, which corresponds to the number of currently logged in PRTG user accounts. We also added api/health.json to the public API documentation in the PRTG user manual.
Reports	PRTG now generates your PDF and HTML reports much faster compared to previous versions. You will especially notice this performance improvement when running reports with a lot of sensors and historic data on large installations.

Fixed

Sensors

Common SaaS	The Twitter channel of the Common SaaS sensor now supports response code 426. In previous versions, the sensor occasionally showed a warning status with the message Twitter API not available - HTTP/1.1 426 Upgrade Required if Twitter returned this code.
DNS v2	You can add the DNS v2 sensor via auto-discovery again.
EXE/Script sensors	We updated the sample PowerShell scripts that we deliver for EXE/Script sensors to work with the enabled PowerShell Security Enhancement setting. The scripts now use write-output instead of write-host. We also encourage you again to accordingly adapt your own scripts to write-output to successfully run your custom PowerShell sensors with enabled security enhancement.
Flow and Packet Sniffer sensors	PRTG now properly handles whitespaces in group names and captions when you change the default groups and channels for Flow and Packet Sniffer sensors (via CustomFlowRules.osr, for example). In previous version, whitespaces led to a disabled Save button on the Settings tab of Flow and Packet Sniffer sensors.
HPE 3PAR sensors	We fixed an issue with HPE 3PAR sensors that could cause the probe to stop monitoring if you had a certain number of running HPE 3PAR sensors on this probe. All sensors on the affected probe showed the unknown status in such cases. We also improved the stability of HPE 3PAR sensors in case of reconnects where the sensors previously were not able to recover from the down status in some cases. The issues affected the HPE 3PAR Common Provisioning Group sensor, as well as the experimental sensor types HPE 3PAR Drive Enclosure (BETA) and HPE 3PAR Virtual Volume (BETA).
Modbus sensors	We fixed connection issues of Modbus TCP Custom and Modbus RTU Custom sensors that appeared in the previous PRTG stable version 21.3.70. Modbus sensors were not able to connect to the target server if the initial attempt failed and showed a permanent down status with the error message The sensor could not retrieve data from the server or similar.
NetApp LUN	The NetApp LUN sensor now shows 0% bytes free if the used size exceeds the allocated size, just like the NetApp in its own interface. In previous versions, the sensor showed a completely incorrect value in such cases.
VMware Virtual Machine (SOAP)	Newly created VMware Virtual Machine (SOAP) sensors now have the Alarm when VM is powered off setting enabled by default.
Sensor creation	The progress bar in the Working... dialog window that appears when you start adding certain sensor types now also properly visualizes the progress for various sensor types that we implemented over the last couple of PRTG versions.

Fixed

Security

User accounts	Paused PRTG user accounts cannot resume other paused user accounts via the API anymore.
Version number	PRTG no longer displays the current version number in the footer of the startup screen in the web interface. This improves security by not providing attackers potentially relevant information on a page that does not require a login.

Fixed

Server

Cluster	Sensors on failover nodes in status Down (Acknowledged) show timestamps and names of the acknowledging user accounts in the sensor message again.
User accounts	User accounts that are member of an Active Directory or single sign-on user group now open the defined homepage of their primary user group when they log in for the first time. In previous versions, they always started on the default welcome page.

Lab

Sensors

AWS ELB v2	We added several new sensor channels for various metrics of application and network load balancers to the AWS ELB v2 (BETA) sensor.
AWS RDS v2	You can try out the experimental AWS RDS v2 (BETA) sensor as of this version. The sensor monitors various metrics of your RDS instances and will be the successor of the existing Amazon CloudWatch RDS sensor.
Local Folder	We added the option to define whether the Local Folder (BETA) sensor monitors only the specified folder (default) or all subfolders as well. You can define this behavior with the Recurse Subfolders setting. You can filter for specific files that you want to monitor. Enable the Filter by File Name setting, define if you want to include or exclude specific file names and file types, and so keep an eye on your most important files. You can now filter files by age. With this option you can monitor, for example, the success of certain automatic processes that create or modify files. We added a timeout setting, which is useful for larger filesystems to avoid a potential probe overload, and prevent defining UNC paths, which are not supported by the sensor.
Redfish Virtual Disk	You can try out the experimental Redfish Virtual Disk (BETA) sensor as of this version. The sensor monitors the virtual disks of your Redfish capable servers and shows capacity and status.
REST Custom v2	The REST Custom v2 (BETA) sensor now supports XML in addition to JSON and you can use XPath to define the sensor channels.

Improved

Various

Languages	We updated the German language file and implemented some minor improvements for French and Russian.
All parts of PRTG	Various other minor fixes and improvements, updated user manual

August 3rd 2021 – Version 21.3.70.1558

Blog article

By Sascha Neumeier • Aug 31, 2021

New PRTG release 21.3.70 with new Azure, HPE, and Redfish sensors

Just a short while ago, I introduced you to PRTG Release 21.3.69, with a load of new sensors, and now the next version is ready for installation. And this version also comes with brand new stuff!
Read the complete blog post here

New

Sensors

HPE 3PAR Common Provisioning Group	The new HPE 3PAR Common Provisioning Group sensor monitors the capacity of a common provisioning group (CPG) on an HPE 3PAR storage system. It shows the overall state of the CPG, as well as free, allocated, and used logical space, snapshot space, and user space. We released this sensor type as experimental sensor in PRTG 21.1.65 and implemented your feedback over the last couple of PRTG versions.
Microsoft Azure SQL Database	The new Microsoft Azure SQL Database monitors metrics of an Azure SQL Database (single database or elastic pool) in a Microsoft Azure subscription. It can show, for example, CPU and disk usage, number of deadlocks, DTU and eDTU usage and limits, and sessions in percent. We released this sensor type as experimental sensor in PRTG 20.4.64 and implemented your feedback over the last couple of PRTG versions.
Microsoft Azure Storage Account	The new Microsoft Azure Storage Account sensor monitors the storage account in a Microsoft Azure subscription and shows latency, traffic, and capacity metrics, as well as the number of request breakdowns. We released this sensor type as experimental sensor in PRTG 21.1.65 and implemented your feedback over the last couple of PRTG versions.

Improved

Sensors

Microsoft 365 sensors	You can now create device templates that include the sensor types Microsoft 365 Service Status and Microsoft 365 Service Status Advanced. This enables you to add these sensors via auto-discovery.
Modbus TCP Custom	We implemented session sharing for the Modbus TCP Custom sensor and the experimental Modbus RTU Custom sensor. Session sharing reduces the load on the monitored system compared to previous PRTG versions where each sensor created its own connection to the Modbus gateway.
OPC UA Custom	The OPC UA Custom sensor now supports up to 10 channels so that you can monitor up to 10 values returned by specific OPC UA node IDs with one sensor of this type.
WMI Event Log	The WMI Event Log sensor now supports filtering by multiple event IDs.
Zoom Service Status	You can now create device templates that include the Zoom Service Status sensor. This enables you to add sensors of this type via auto-discovery.

Fixed

Sensors

MySQL (v1)	Still existing instances of the deprecated sensor type MySQL (v1) work again and continue monitoring upon updating to PRTG 21.3.70 or later. In PRTG versions 21.2.68 and 21.3.69, they showed a down status with the error message parameter -sslmode is missing. Please note that we strongly recommend that you replace all sensors of the deprecated type MySQL (v1) with the MySQL v2 sensor.
SNMP Custom Table	Adding SNMP Custom Table sensors with an identification column other than table_index or ifindex properly works again. In previous versions, the sensors showed a down status after creation with error code PE247 in such cases.

Fixed

Server

Active Directory	We fixed an issue with the login of Active Directory user accounts. If the display name or full name of a user in the Active Directory contained certain special characters like, for example, ampersand (&), a newly introduced security mechanism blocked the login in the last PRTG version 21.3.69. This also affected PRTG user accounts with two or more consecutive whitespaces in login or display name.
Cluster	Failover nodes in a PRTG cluster now keep the password of the PRTG System Administrator user account when you have changed it. In previous versions, the administrator password on failover nodes always reverted to default upon updating the PRTG server. Important: The PRTG default login with password prtgadmin will not work on failover nodes anymore upon updating to PRTG 21.3.70 or later. Please use the PRTG Administration Tool on the failover node to generate a new password. See also the Knowledge Base article Change to requirements for login to the failover node.
Device templates	We fixed an issue with certain sensor types like the SNMP HPE ProLiant Memory Controller sensor that, if included, prevented a successful creation of device templates. The created template did not appear in the list of device templates in such cases.
Single sign-on	We fixed an issue with external callback URLs for the endpoint handling that included uppercase letters. In such cases, you could not login into PRTG via single sign-on and received the error message The URL you are using to connect to PRTG is not enabled for single sign-on.
Time zones	Status messages of down (acknowledged) and paused sensors now show the time zone of the user account instead of the server time. In the logs, the messages are displayed in server time.

Fixed

WebGUI

Home page URL	Home page URLs with URL parameters that you define for PRTG user groups work again. In previous versions, parameters were removed from the URL so that the you did not land on the defined home page when you logged in into the PRTG web interface.
Internet Explorer	Adding new notification triggers and displaying existing triggers in Internet Explorer 11 works again.

Lab

Sensors

AWS EC2 v2 and AWS ELB v2	We added comprehensible region names to the channels of the experimental AWS EC2 v2 and AWS ELB v2 sensors.
Local Folder	We introduce the experimental Local Folder (BETA) sensor with this version. The sensor monitors the number of files and folders in a local folder on the probe device, as well as its size and the age of oldest and newest files.
Redfish System Health	You can try out the experimental Redfish System Health (BETA) sensor as of this version. With this sensor, you can monitor the system health of servers in your datacenter using the Redfish protocol from your servers' management controllers like Lenovo XClarity, HPE iLO, or Dell iDrac.

Improved

Various

Languages	We updated and improved all language files.
All parts of PRTG	Various other minor fixes and improvements, updated user manual

June 21st 2021 – Version 21.2.69.1308

Blog article

By Sascha Neumeier • Jul 16, 2021

New PRTG release 21.3.69 with new Veeam, AWS and Rittal sensors

This is a brand new PRTG version waiting for you. In release 21.3.69, you can expect the Veeam Backup Job Status Advanced Sensor, which goes from experimental state to normal operation. There are...
Read the complete blog post here

New

Sensors

Veeam Backup Job Status Advanced

The new Veeam Backup Job Status Advanced sensor monitors the status of a specific backup job that runs on the Veeam Backup Enterprise Manager. The sensor monitors the status of the backup job, the duration, the time since the last run, and if the backup job is scheduled.

We released this sensor type as experimental sensor in PRTG 21.1.65 and received valuable feedback that we implemented over the last couple of PRTG versions. In addition to the functionality that the sensor already had in the last PRTG version, we resolved two more issue for this release.

Adding a new Veeam Backup Job Status Advanced sensor works more reliably now. In certain scenarios, you could not add the sensor and received the error message An error occurred. The queried field is empty.
We added the new lookup value None so that the sensor can now handle the combination job status idle and job result none. Previously, the sensor showed a down status with the error message An error occurred: Bad optional access in such cases.

Improved

Sensors

Dell EMC Unity Enclosure Health v2	The Dell EMC Unity Enclosure Health v2 sensor now can also monitor Power Consumption in a dedicated channel.
Modbus TCP Custom	You can now select single bits of input and holding registers to monitor them with the Modbus TCP Custom sensor. This is useful for monitoring Modbus devices that report the on/off status of several inputs as one register, for example. You can now create sensor channels from the value type Delta (counter) to calculate the difference between the last and the current value. With this option you can monitor the power consumption of your heat pump, for example, to know if it is operating efficiently. We also implemented these features for the experimental Modbus RTU Custom (BETA) sensor.
MQTT Subscribe Custom	The MQTT Subscribe Custom sensor now supports up to 10 channels so that you can monitor up to 10 values from a subscribed MQTT topic with one sensor of this type.
SNMP sensors	PRTG can now perform more SNMP v3 requests at the same time, so that monitoring with SNMP v3 sensors is more stable compared to previous versions.

Improved

Security

Active Directory

PRTG now validates all fields that are imported from Active Directory when creating a new user account to close a potential XSS vulnerability. (CVE-2021-29643)

Fixed

Sensors

Microsoft Azure sensors	We improved the stability of the Microsoft Azure sensors. In previous versions, the sensors had connection issues in some cases, which resulted in wrong down and warning states.
DNS v2	The Records Resolved channel of the DNS v2 sensor correctly uses a lookup with the states yes and no again. Add the sensor anew to resolve the issue with the Records Resolved channel.
Microsoft 365 Service Status sensors	We hardened the Microsoft 365 Service Status sensor and the Microsoft 365 Service Status Advanced sensor against unknown service states that Microsoft 365 may return. In such cases, the sensors previously showed a down status with the message error.generic[invalid map key].
SNMP Printer	We improved the stability of the SNMP Printer sensor. In rare cases, the sensor showed a down status with the message No such instance (SNMP error # 223) after some time when monitoring certain types of printers.

Fixed

Server

API	API calls for tables with content=probenodes return all probes again.
Auto-Discovery	Devices now keep their settings even after running an auto-discovery on this device. Previously, the first auto-discovery on a device occasionally overwrote your manually configured settings like names, icons, or tags.
Graphs	The graph on the 2 days tabs of sensors shows the correct downtime again. In previous versions, the 2 days tab showed a wrong downtime in various cases, for example, always 0% even if there was a downtime reported and correctly shown in the data table. The percentage values on the y-axis of 2 day graphs are also back again.
Single sign-on	Logging in with single sign-on now also works if you use an Azure AD group name (sAMAccountName) with upper-case letters as SSO Group Access Claim. We also fixed the misbehavior that PRTG logged out SSO user accounts after some time.

Fixed

WebGUI

Maps	We fixed a display issue on maps that affected channel gauges on View Map tabs. Sometimes, the gauge values of previously opened sensor pages erroneously appeared in gauge map objects instead of the real values until the page was refreshed.

Lab

Sensors

AWS EC2 v2	You can try out the experimental AWS EC2 v2 (BETA) sensor as of this version. The sensor monitors the performance of an Amazon EC2 instance and will be the successor of the existing Amazon CloudWatch EC2 sensor. Note: If you use the same IAM policy that you use for the Amazon CloudWatch EC2 sensor, you must update it. For more information, see the Knowledge Base: How do I set permissions for the Amazon Web Services (AWS) API key to use certain sensors in PRTG?
AWS ELB v2	You can try out the experimental AWS ELB v2 (BETA) sensor as of this version. The sensor monitors the performance of an AWS ELB load balancer and will be the successor of the existing Amazon CloudWatch ELB sensor.
HPE 3PAR sensors	We implemented session sharing for the HPE 3PAR sensors. Session sharing reduces the load on the monitored system compared to previous PRTG versions where the sensors logged in to the HPE 3PAR system with every scan.
REST Custom v2	We fixed the Custom Headers of the REST Custom v2 sensor. In the last PRTG version, sending custom HTTP headers did not work correctly.
SNMP Rittal CMC III Hardware Status	We introduce the experimental SNMP Rittal CMC III Hardware Status (BETA) sensor with this version. The sensor monitors the hardware status of a Rittal CMC III processing unit and shows the status of every attached external sensor.

Improved

Various

All parts of PRTG

Various other minor fixes and improvements, updated German language file, updated user manual

Changed

Sensors

DNS sensor

The DNS (v1) sensor is now deprecated as we previously announced. DNS (v1) sensors that you added in previous versions will continue to monitor after updating to PRTG 21.x.69, but you cannot add sensors of this type anew. Please use the new DNS v2 sensor instead.

Note

Sensors

SNMP sensors

In some cases, SNMP sensors show SNMP error 2011 after updating PRTG to version 21.3.69 with the message Could not create SNMP Session (-3000)-2011. The error may occur if the latest updates for the Visual C++ Redistributable Package are missing on the probe system.

For more information, see the Knowledge Base article https://kb.paessler.com/en/topic/89831.

May 19th 2021 – Version 21.2.68.1477

Improved

Languages

German

We updated the German language file.

Fixed

Server

Sensor settings

We fixed an issue with sensor channel limits that caused an error when you tried to save sensor or channel settings. You could not save the settings of a sensor if you previously configured a floating value in the channel limits of this sensor. Depending on the current page in PRTG, the error message in this case was Error (Bad Request) Internal error: [value] is not a valid floating point value or There was a problem... PRTG Network Monitor has encountered a problem. Your last request could not be processed properly. The issue occurred in the previous preview version 21.2.68.1433.

May 7th 2021 – Version 21.2.68.1433

Blog article

By Sascha Neumeier • Jun 7, 2021

PRTG version 21.2.68 includes Single Sign-On via Azure AD

…and lots of other interesting stuff! PRTG release 21.2.68 has been available in the stable release channel for a few days. With this version you can login to PRTG via Single Sign-On (SSO) using...
Read the complete blog post here

New

Login

Single sign-on

You can now login to PRTG via single sign-on (SSO). As of PRTG 21.2.68, you can use Azure Active Directory (Azure AD) as SSO provider in PRTG. After configuring Azure AD for PRTG, enable single sign-on in the PRTG system administration and create a user group that uses single sign-on integration. The members of this user group will then use SSO via Azure AD to login to PRTG.

For details about setup and configuration, see this Knowledge Base article. Please note that this feature is only available for PRTG on premises, not for Paessler PRTG Hosted Monitor.

New

Paessler PRTG Hosted Monitor

Regions

We added the cloud region US East for the hosting option of Paessler PRTG Hosted Monitor. Region transfers of instances between Europe and United States (and vice versa) are now possible. Please contact our support for according inquiries.

Improved

Sensors

Cloud HTTP v2 and Cloud Ping v2	We improved the stability of Cloud HTTP v2 and Cloud Ping v2 sensors, which will result in less sensor timeouts than in previous versions. The sensors now also continue monitoring and show data for available regions even if one or more region is not working, and we added a PRTG Cloud Response channel for each region that shows the current status of a region.
Dell EMC Unity v2 sensors	We implemented session sharing for the Dell EMC Unity v2 sensors. Session sharing reduces the load on the monitored system compared to previous PRTG versions where the sensors logged in to the Dell EMC system with every scan.
Modbus TCP Custom	You can now create device templates that include the Modbus TCP Custom sensor. This enables you to add sensors of this sensor type via auto-discovery.
MySQL v2	The MySQL v2 sensor now provides a dedicated setting for the SSL mode. The options you can choose are the same as the values of the MySQL sslmode parameter. Depending on your monitoring setup, for example with offline installations, you may have to change the setting for successful monitoring.

Improved

Server

HTTP requests

We upgraded the HTTP protocol that PRTG uses in HTTP POST requests to HTTP 1.1. PRTG uses POST requests at several places to call external endpoints. For example, this change affects the notification types email, push, and SMS. If required, you can still switch back to HTTP 1.0 in the according notification template settings.

Improved

Notifications

SMS delivery

We improved the usability of the SMS service provider setup, which will help you to more easily configure SMS notification delivery. All necessary fields now require you to fill them in before saving the settings to ensure you provide all necessary information. By default, the SMS configuration mode is now disabled if you have not had configured SMS delivery before.

Fixed

Sensors

EXE/Script sensors	EXE/Script and EXE/Script Advanced sensors now escape round brackets in the Parameters field to prevent potential code injection.
MQTT Statistics	We fixed an issue with the MQTT Statistics sensor that showed wrong data after some time of monitoring in certain cases.
NetFlow v9 and IPFIX sensors	We corrected the traffic calculation of NetFlow v9 and IPFIX sensors. The sensors reported too much traffic with certain combinations of flow fields.
VMware Host Hardware Status (SOAP)	The VMware Host Hardware Status (SOAP) sensor properly reports errors again. In previous versions, the sensor did not show an alert state if a warning state was already present.
Windows Updates Status (PowerShell)	The Windows Updates Status (PowerShell) sensor now properly applies the Port in SPN setting. In previous versions, the port was not correctly included in the SPN even if you enabled the setting.

Fixed

Server

API	We fixed an issue with API calls that returned no data in certain cases, for example, when querying System Information via /api/table.json.
Channel limits	You can define the same values for upper and lower sensor channel limits again.
Map Designer	We fixed an issue in the map designer that triggered an error dialog window with the message Error (Bad Request). Sorry, the selected object cannot be used here. This happened in the last PRTG version 21.2.67 when you tried to load the preview of an incompatible object type in the properties section of the map.
Probes	We implemented stability improvements for probe connections after a PRTG server restart, which will be especially helpful if you have many remote probes.

Lab

Sensors

REST Custom v2	You can try out the experimental REST Custom v2 (BETA) sensor as of this version. The sensor monitors the results of a JSON REST API call and will be the successor of the existing REST Custom sensor. We are looking forward to your feedback!
Microsoft Azure SQL Database	The experimental Microsoft Azure SQL Database (BETA) now shows correct channel names.

Improved

Various

Languages	We updated the German language file.
All parts of PRTG	Various other minor fixes and improvements, updated user manual

Note

Sensors

DNS sensor

We will discontinue the DNS sensor (v1) with the upcoming PRTG version 21.x.69. Running sensors of this type will still work for some more versions, but you will not be able to deploy them as of PRTG 21.x.69. If you use the sensor, we strongly recommend that you replace it with the superseding sensor type DNS v2 soon. If you encounter any remaining issues with the new DNS v2 sensor, please immediately contact us so that we can address them.

EXE/Script sensors

As of PRTG 21.2.68, the experimental setting PowerShell Security Enhancement is enabled by default if you update PRTG from version 20.4.64 or previous to 21.2.68 or later and on new installations.

If you encounter custom EXE/Script sensors in down status with, for example, error code PE231 or PE233 after the update, please check the according PowerShell scripts and replace write-host with write-output where applicable.
If this does not help or is not applicable, you can still disable the PowerShell Security Enhancement setting again under Setup | System Administration | Monitoring, section Experimental Features. Please contact us in such cases to help us resolving remaining issues with this security enhancement.

April 20th 2021 – Version 21.2.67.1563

Fixed

Sensors

Exchange (PowerShell) sensors	Exchange (PowerShell) sensors now work with the recent Microsoft Exchange Server security update KB5001779 from April 13, 2021. After applying the Exchange Server update, Exchange (PowerShell) sensors showed a down status with the error message The sensor was able to connect to the device using Remote PowerShell but could not retrieve access to Remote Exchange Management Shell. Ensure that remote management is enabled on the Exchange Server and the user has sufficient rights. See https://kb.paessler.com/en/topic/54353 for details. This affected all Exchange (PowerShell) sensors. Exchange Backup (PowerShell) Exchange Database (PowerShell) Exchange Database DAG (PowerShell) Exchange Mail Queue (PowerShell) Exchange Mailbox (PowerShell) Exchange Public Folder (PowerShell)
IPMI System Health	The IPMI System Health sensor works again. After updating to the last PRTG preview version 21.2.67.1531, sensors of this type showed a down status with the error message No "result" or "error" in XML response.
SNMP sensors	SNMP community strings remain as defined again when updating PRTG. The update to the last PRTG preview version 21.2.67.1531 overwrote SNMP community strings with the default value (public) so that SNMP sensors stopped working after the update if you used another SNMP community string.

Improved

Languages

German

We updated the German language file.

April 1st 2021 – Version 21.2.67.1531

Blog article

By Sascha Neumeier • May 3, 2021

We've released PRTG version 21.2.67 and updated our PRTG roadmap

PRTG 21.2.67 has been available in the stable release channel since last week. With this version, we released the probe-independent Core Health (Autonomous) sensor, as well as three new...
Read the complete blog post here

New

Server

Core Health (Autonomous) sensor

The new Core Health (Autonomous) sensor monitors your PRTG server and is automatically created on the new PRTG Core Server device when you install PRTG 21.x.67 or later. It shows the status of the PRTG core server and checks various parameters of the PRTG core server that have an impact on the stability of the system.

The sensor has the same functionality as the existing Core Health sensor but runs independently of the local probe. Because of this, the sensor still can monitor the status of the PRTG server if the probe is disconnected. This avoids situations that there is no health data for the PRTG server available when the local probe is disconnected so that efficient troubleshooting in case of server issues is still possible.

New

ITOps Board 2.11

Consolidated Components	The new Consolidated Components feature allows you to link together components that have common properties. This feature is helpful if you have components that are monitored by multiple source systems. For example, if a server is being monitored by multiple PRTG sensors, you can consolidate those sensors and the device into one component and designate it as a Computer in ITOps Board. You can then monitor a single computer with all its related sensors as one object.
SLA Reporting Enhancements	This release introduces the following enhancements to SLA reporting. The SLA chart for business services now displays uptime as well as downtime. The SLA table lists the components that contributed to downtime, and now shows both the start time and the end time of the outage that impacted the SLA. You can view which components contributed to downtime and choose to exclude specific outages from SLA calculations. For example, if a component was out of service due to maintenance, but maintenance mode was not scheduled, you can exclude that specific outage from the SLA calculations. You can add notes when you exclude an outage. You can generate and download a PDF report of SLA data for a business service.
Acknowledge Alerts	A new button on the Alerts page allows you to acknowledge an alert that has not yet been resolved. The button is available when you select one or more alerts and click the Action icon.
Google Analytics Option	Google Analytics has been added to this release to help us understand how you use the ITOps Board interface. This information will help us to improve future versions of the product. If you do not want to provide this information, you can disable Google Analytics in the installation wizard. After the installation is complete, administrators can enable or disable Google Analytics from the Settings \| General Settings page.

Improved

Sensors

MQTT Subscribe Custom	The MQTT Subscribe Custom sensor can now show text messages from your IoT devices. Define the Sensor Message JSONPath in the sensor settings and always see the latest message from your system in the sensor message.
Zoom Service Status	We added the channel Webhooks to the Zoom Service Status sensor.

Improved

Security

User accounts

You can set the Homepage URL of a PRTG user account or user group only to web pages of your PRTG instance as of this version. External domains are not allowed anymore to prevent redirects to potentially malicious pages.

Note: Previously defined homepage URLs that violate this rule will prevent you from saving changes to affected user account or user group settings. Please change the homepage URL to a valid page in this case to be able to save the settings again.

Web server

Web pages in PRTG that do not require authentication like help and password recovery pages now return the X-Frame Options HTTP header DENY by default. This security improvement helps to prevent potential phishing attempts. Overriding the header value accordingly applies to these pages, see this Knowledge Base article.

Fixed

Sensors

Exchange (PowerShell) sensors	Exchange (PowerShell) sensors now work with the recent Microsoft Exchange Server security update KB5001779 from April 13, 2021. After applying the Exchange Server update, Exchange (PowerShell) sensors showed a down status with the error message The sensor was able to connect to the device using Remote PowerShell but could not retrieve access to Remote Exchange Management Shell. Ensure that remote management is enabled on the Exchange Server and the user has sufficient rights. See https://kb.paessler.com/en/topic/54353 for details. This affected all Exchange (PowerShell) sensors. Exchange Backup (PowerShell) Exchange Database (PowerShell) Exchange Database DAG (PowerShell) Exchange Mail Queue (PowerShell) Exchange Mailbox (PowerShell) Exchange Public Folder (PowerShell)
Flow sensors	NetFlow, IPFIX, and jFlow sensors now properly ignore flow timestamps if you define 0 as Active Flow Timeout. Previously, this approach only worked in some cases while in other cases flows were disregarded when using 0 as active flow timeout, resulting in incorrect monitoring data. We hardened the flow sensors against unexpected data in received flows that some devices like, for example, Huawei routers may send. In rare cases where this happened, the flow sensors were not able to monitor any flow data and remained in unknown status.
HTTP Transaction	We fixed a memory leak that occurred when using the HTTP Transaction sensor in Alternate/Compatibility Mode.
OPC UA Custom	The OPC UA Custom sensor now supports Int64 values. In previous versions, the sensor showed a down status when reading a node with an Int64 data type.
SNMP Library	The SNMP Library sensor creates sensors and channels for all library OIDs that you select during sensor creation again. In previous versions, some sensor channels were missing after sensor creation if you selected more than one library OID from one category.
SNMP Trap Receiver and Syslog Receiver	You can now use angle brackets (<>) in the message filter of SNMP Trap Receiver and Syslog Receiver sensors.

Fixed

Server

Auto-Update	We improved the stability of auto-updates when PRTG updates to a 64-bit version from a 32-bit version. Previously, the auto-update sometimes failed in such cases and required a manual update.
Channel limits	You can save Limits in sensor channel settings again when using comma as decimal separator. In the previous PRTG version 21.1.66, you received the error message Internal Error: '[value]' is not a valid floating point value when you tried to save the channel settings in this case.
Cluster	Devices that you clone to a remote probe in a cluster are immediately synchronized to failover nodes again. In the previous PRTG version 21.1.66, failover nodes only showed the cloned device after a restart of the failover. Actions on notification contacts like creating, pausing, resuming, deleting are now immediately synchronized to failover nodes.
Gauges	Device overview tabs show gauges of sensors with a 5-star priority with a proper minimum/maximum value range again. In previous versions, the gauges only showed the value range 0 to 1000.
Search	The detailed search now properly works even if a search for objects with special characters returns more than 10 results. In previous versions, the More button that appears when more than 10 results are found opened an empty list of search results in such cases.
Startup	We fixed an issue with the PRTG server that could not start in rare cases due to language files being used by another process.
Toplists	We fixed the toplists of flow and packet sniffer sensors that only showed data for the most current toplist period in some cases.
User accounts	You cannot pause the default PRTG System Administrator (user ID 100) account with another administrator account anymore. In previous versions, this was temporarily possible until a server restart and could result in inconsistent behavior of PRTG.

Fixed

Notifications

Execute HTTP Action

HTTP notifications now use HTTP 1.1 by default to execute HTTP actions. In previous version, the HTTP version always fell back to 1.0, which could lead to issues with several notification targets like Atlassian Opsgenie, for example. If required, you can still switch back to HTTP 1.0 in the notification settings.

Fixed

System Information

Data	The System table on System Information tabs correctly displays MAC addresses again even if they are returned via SNMP. In previous versions, MAC addresses returned via SNMP were not readable.

Fixed

Reports

PDF reports

We fixed a layout issue that caused cut off graph legends with certain page format and orientation combinations in PDF reports.

Lab

Sensors

Beckhoff IPC System Health	We added the experimental Beckhoff IPC System Health (BETA) sensor. The sensor monitors the system health of a Beckhoff Industrial PC (IPC) via OPC UA. We are looking forward to your feedback!
HPE 3PAR sensors	You can try out the experimental sensor types HPE 3PAR Drive Enclosure (BETA) and HPE 3PAR Virtual Volume (BETA) with this version. Of course, your feedback is highly welcome! The HPE 3PAR Drive Enclosure (BETA) sensor monitors a drive enclosure of your HPE 3PAR storage system and shows status and temperature metrics. The HPE 3PAR Virtual Volume (BETA) sensor monitors a virtual volume of your HPE 3PAR storage system and shows the status as well as used and free space on the volume.
PowerShell Security Enhancement	We fixed an issue with the parameter handling of custom EXE/Script sensors that occurred when the experimental feature PowerShell Security Enhancement was enabled. The issue could lead to non-functional EXE/Script sensors in some cases.
Veeam Backup Job Status Advanced	The experimental Veeam Backup Job Status Advanced (BETA) sensor can now monitor backup jobs on Hyper-V platforms. Previously, the sensor creation failed with the error message An error occurred. invalid map in such cases. We fixed an issue with the Status channel that incorrectly showed the status Not Run Yet for a backup job in certain cases.

Improved

Various

Languages	We updated the German language file.
All parts of PRTG	Various other minor fixes and improvements, updated user manual

Changed

Sensors and API

HTTP Push Data Advanced and HTTP IoT Push Data Advanced sensors

We fixed a typo in the Time Threshold (Minutes) property of HTTP Push Data Advanced and HTTP IoT Push Data Advanced sensors. The property is now correctly spelled timethreshold. If you modify or read out this property via the API (setobjectproperty.htm, getobjectproperty.htm), please change the misspelled timethreshhold to timethreshold if necessary.

Changed

Tree version

Tree version update

The configuration file of this version is not downwards compatible with previous PRTG versions.

Changed

Sensors

REST Dell EMC sensors

The REST Dell EMC sensors are now deprecated as we previously announced. REST Dell EMC sensors that you added in previous versions will continue to monitor after updating to PRTG 21.x.67, but you cannot add them anew. This affects the following sensor types.

REST Dell EMC Capacity
REST Dell EMC File System
REST Dell EMC LUN
REST Dell EMC Pool
REST Dell EMC System Health

Please use the new Dell EMC Unity sensors instead to monitor your Dell EMC Unity storage system.

Dell EMC Unity Enclosure Health v2
Dell EMC Unity File System v2
Dell EMC Unity Storage Capacity v2
Dell EMC Unity Storage LUN v2
Dell EMC Unity Storage Pool v2
Dell EMC Unity VMware Datastore v2

Note

Known Issue

Map Designer

In the current PRTG version 21.2.67, object types in the Properties section of the Map Designer that are by design incompatible to the selected object in the Device Tree section return an error dialog window when loading the object preview. The message is Error (Bad Request). Sorry, the selected object cannot be used here. PRTG redirects you to the welcome page when you confirm the dialog window.

This happens, for example, when you select nothing, root, or a probe, group, or device in the device tree and hover your mouse over a live graph or gauge object in the properties section. Note that existing maps that already include an element that is empty due to incompatible object type will show the same error message and will not load.

Workaround: To add a live graph or gauge for a sensor, ensure you have selected the sensor in the device tree section (click the sensor in the device tree section to select it) before you choose an object in the properties section. If you have selected any other object in the device tree section than a sensor, avoid hovering incompatible object types like live graphs or gauges in the properties section.

Status: Resolved with PRTG version 21.2.68.1492.

March 4th 2021 – Version 21.1.66.1621

Improved

Languages

German

We updated the German language file.

Fixed

Sensors

VMware sensors

We fixed an issue with the session handling of VMware (SOAP) sensors. In the previous PRTG version 21.1.65, the issue caused the sensors to log in and log out on the target system with each sensor scan, which flooded the VMware logs, for example.

Fixed

Server and Probes

Stability

We fixed an issue that could cause instability of the PRTG server and probes in varying forms. This could happen in case of failing Execute Program notifications, failing EXE sensors, or failing script sensors, for example.

February 12th 2021 – Version 21.1.66.1577

Blog article

By Sascha Neumeier • Mar 26, 2021

PRTG 21.1.66 is about OPC UA and improvements to existing sensors

Time for another new release of PRTG Network Monitor. Our latest PRTG version, 21.1.66, is ready for installation and is packed with several new features. That said, have you tried all the new...
Read the complete blog post here

New

Sensors

OPC UA Certificate

The new OPC UA Certificate sensor monitors the certificate of an OPC UA server and helps you to ensure a secure and consistent communication between the machines in your shop floor. We released this sensor type as experimental sensor in the last PRTG version and received valuable feedback that we now implemented to enhance the sensor based on your needs. The following additional features made it into this version.

We added the channel Self Signed that shows if the monitored certificate is self-signed or not.
The sensor shows the certificate thumbprint and the common name in the sensor message.

OPC UA Custom

The new OPC UA Custom sensor monitors the values returned by multiple nodes of an OPC UA server. We released this sensor type as experimental sensor in PRTG 20.4.63 and received valuable feedback that we implemented over the last couple of PRTG versions. In addition to the functionality that the sensor already had in the last PRTG version, we added two more features for this release.

The sensor now automatically creates a lookup channel if the OPC UA server returns a Boolean value. By default, the channel will show a down status if the server returns the value 0 (false), and an up status if the server returns 1 (true).
The sensor can now read string nodes from an OPC UA server and display them in the sensor message. You can specify the node ID for the string in the sensor settings and use this feature to display serial numbers of connected modules or the like.

Improved

Sensors

DNS v2	You can now create device templates that include the DNS v2 sensor. This enables you to add sensors of this sensor type via auto-discovery.
Microsoft 365 Service Status Advanced	The Microsoft 365 Service Status Advanced sensor now shows in the sensor message whether an issue is an advisory or incident so that you can easily see the impact of an issue.
Packet Sniffer	We updated the Npcap library that Packet Sniffer and Packet Sniffer (Custom) sensors use to monitor your traffic to version 1.10. The new version includes several fixes and performance improvements compared to the previously delivered version 0.9987.
Windows Updates Status (PowerShell)	The Windows Updates Status (PowerShell) sensor can now monitor workgroup machines and target systems that are not in the same domain as the PRTG probe. You can define the required authentication method, Kerberos authentication or negotiation authentication, in the sensor settings.
WMI Battery	The WMI Battery sensor can now monitor the battery level of USB connected UPS so that you can ensure there is enough load in case of a power outage.

Improved

Server

User Accounts

PRTG now logs changes to user account passwords and shows which user account changed a password and when. You can view the changes on the History tab of a user account.

Improved

WebGUI

Add Sensor Dialog

Several more sensor types for which required credentials in the parent device settings are missing are now greyed out in the Add Sensor dialog. You cannot add the sensors without providing the credentials anymore. PRTG lists the credentials that you need to provide in this case for each sensor. This will help you to more flawlessly enhance your monitoring with new sensors. The change affects the recently introduced sensor families Dell EMC v2, Microsoft 365, Microsoft Azure, Veeam Backup, and HPE 3PAR (BETA).

Channel Limits

PRTG now validates the limits you enter in sensor channel settings. You cannot save invalid limit combinations anymore like, for example, a higher value for the lower error limit than for the lower warning limit. This will help you to avoid unexpected sensor behavior due to mistakenly defined limit configurations.

Improved

Security

Web Server

We fixed a vulnerability that enabled potential attackers to verify the existence of certain files on the file system of the web server of PRTG by invoking the screenshot functionality of PRTG with special crafted paths. (CVE-2021-27220)

Lab

Sensors

HPE 3PAR Common Provisioning Group	We added the channels Logical space free, User space free, and Snapshot space free to the HPE 3PAR Common Provisioning Group (BETA) sensor.
Microsoft Azure SQL Database	We improved the Add Sensor dialog of the Microsoft Azure SQL Database (BETA) sensor. The table where you select the databases you want to monitor when you add the sensor supports filtering and sorting by DTU and vCore, and you can see if a database belongs to an elastic pool and which one. Additionally, the elastic pool is added to the sensor name upon sensor creation.
Veeam Backup Job Status Advanced	We added the channels Last Job Run and Job Scheduled to the Veeam Backup Job Status Advanced (BETA) sensor. Because of the new channel, we also removed the setting Warn if the job is not scheduled, as well as we improved the help texts for the sensor and the names of lookup states.

Fixed

Sensors

Auto-Discovery	Auto-discovery on IPv6 devices works again. The sensors in according device templates are automatically created when you run the auto-discovery with a device template for an IPv6 device. In previous versions, it was not possible to add sensors via auto-discovery in this case. The standard device template UPS (Generic) now creates sensors with correct unit and scaling for the Current channels.
Dell EMC Unity v2 sensors	Dell EMC Unity v2 sensors now support multiple descriptions in the API response from the target device. Multiple descriptions can appear if there is an issue with a disk in a Dell EMC Unity storage system, for example. In this case, the sensors showed a down status in previous versions and created the log message The received value is an array instead of a single value. Dell EMC v2 sensors now show the correct value and all received descriptions in the sensor message in this case.
Dell EMC Unity VMware Datastore v2	You can now add Dell EMC Unity VMware Datastore v2 sensors to Dell storage systems even if there is a Veeam Backup plugin installed. In previous version, you could not add the sensor to such a device because the scan for available monitoring items failed with the error message An error occurred. (The queried field is empty.)
HTTP Transaction	The HTTP Transaction sensor now supports ports when using smart URL replacement. In previous versions, the sensor did not correctly fill in the parent device's IP address or DNS name if you defined a transaction URL only denoting the port number. The sensor showed a down status with the following message in this case: Failed to establish secure connection [Step 0] Socket Error # 11001 Host not found.
Microsoft 365 Service Status sensors	We hardened the Microsoft 365 Service Status sensor and the Microsoft 365 Service Status Advanced sensor against some unexpected return values. We added a retry setting to avoid sensor errors due to empty responses that the Microsoft 365 API sometimes returns. The error message in such cases is An error occurred. API Response does not contain exactly one result for the workload [...]. We added support for a status return code that the sensors could not handle so far. The error message when the Microsoft 365 API returned such an unknown code was An error occurred. invalid map key.
Microsoft Azure Subscription Cost	We improved the handling of empty fields that Microsoft Azure sometimes returns to the Microsoft Azure Subscription Cost sensor. In previous versions, the sensor only showed a down status in such cases.
Modbus TCP Custom	The Modbus TCP Custom sensor now supports the unit ID 255, which is required for certain target devices. We also implemented the fix for the experimental Modbus RTU Custom (BETA) sensor.
NetFlow and IPFIX sensors	NetFlow and IPFIX sensors now show an expressive error message if one or more IP addresses that were previously selected for binding in the sensor settings are no longer available. This will help you to faster find the error source. The message in this case is The previously selected Network Adapter (with Address ('[IP]') could not be found, please change the sensor settings to an available IP address.
OPC UA sensors	We fixed the issue that some valid client certificates caused a BadCertificateUriInvalid error in OPC UA sensors. The OPC UA sensors could not connect to the target device in such cases due to a different application URI in certificate and sensor.
SNMP sensors	SNMP sensors now support very large values from the numeric SNMP data type Counter64 (unsigned 64-bit integer). In previous versions, SNMP sensors showed the error message [value] is not a valid integer value or wrong values if such a value was returned. The issue was reported by a customer for the SNMP Cisco CBQoS sensor but also affected other SNMP sensor types like SNMP custom sensors, for example.
VMware sensors	We fixed an issue with the session handling of VMware (SOAP) sensors. In the previous PRTG version 21.1.65, the issue caused the sensors to log in and log out on the target system with each sensor scan, which flooded the VMware logs, for example.

Fixed

Server

Cluster	We fixed a potential deadlock that appeared in very rare cases on cluster failover nodes when moving objects from the local probe to the cluster probe, which could crash the system. You can save changes to settings of objects on the cluster probe again. In the previous version 21.1.65, the Save button was always disabled, which made saving changes impossible.
License Activation	We fixed an issue that could prevent automatic license activation in proxy environments.
Notifications	We fixed an issue that prevented notifications from being sent out in rare cases.
Notification Templates	Pausing and resuming notification templates via the notification template list is logged on the History tab of a template again.
Reports	To avoid memory exhaustion, the maximum report interval is now limited to 500 days per report.

Fixed

Server and Probes

Stability

Fixed

WebGUI

Alarms as Gauges	We fixed an issue that caused the page Alarms \| Shows as Gauges to not show any sensor gauges. The page remained empty in previous PRTG versions if there was at least one sensor in Down (Acknowledged) status with a closing square bracket (]) at the end of the sensor's error message.
Device Tree	The device tree keeps collapsed and expanded states of all objects again when the page refreshes. In previous versions, all device tree objects were always expanded after a page refresh if you were logged in as read-only user or as read/write user with read access to an object.

Improved

Various

Languages	We updated the German language file.
All parts of PRTG	Various other minor fixes and improvements, updated user manual

Note

Known Issues

Channel Limits	You cannot save Limits in sensor channel settings when using comma as decimal separator. You will get the error message Internal Error: '[value]' is not a valid floating point value in the current PRTG version 21.1.66. Pre-existing limits are not affected and keep working. As a workaround, you can enter the closest integer value like, for example, 1 instead of 0,99 if applicable. The decimal comma is used in several European regions, for example. Status: We are working on a fix for the next PRTG version 21.x.67.
Microsoft 365 Service Status sensors	In some cases, the sensor types Microsoft 365 Service Status and Microsoft 365 Service Status Advanced may show a down status after updating PRTG with the error message An error occurred. To resolve this issue, try to pause and resume the sensor or check your settings. (code: PE270). To resolve the issue, please manually pause and resume affected sensors or restart the PRTG core server service under Setup \| System Administration \| Administrative Tools \| Restart PRTG Core Server Service.
OPC UA Server Status sensor	We strongly recommend that you add running OPC UA Server Status sensors anew after updating from a previous PRTG version for stability reasons. Although you will not directly encounter issues with the sensors, you may notice errors in the core.log file due to an update issue with the underlying functionality of this sensor type.

January 20th 2021 – VERSION 21.1.65.1744

Improved

Language

All Languages

We updated and improved all language files.

Fixed

Sensors

Microsoft Azure and HPE 3PAR sensors

You can add all Microsoft Azure sensors again in this version, as well as existing Microsoft Azure sensors continue to monitor. The fix also makes the newly introduced HPE 3PAR Common Provisioning Group (BETA) sensor available if you enable experimental sensors. In the previous preview version 20.4.65.1667, the sensor modules for Azure and HPE 3PAR sometimes were not loaded on PRTG startup so that you could neither add them nor continue monitoring with already existing sensors of these types.

SNMP Custom Table

You can manually add SNMP Custom Table sensors using table_index as Identification Column again. In the previous PRTG versions 20.4.64 and 20.4.65.1667, adding the sensor using table_index failed with the error message Sorry, the scan for available monitoring items has failed! TPaeInternalList.GetValues: List index out of bounds: [...].
The column headers of the table in the sensor settings are displayed again when adding the SNMP Custom Table sensor. In the previous PRTG versions 20.4.64 and 20.4.65.1667, the table in the sensor settings had no column headers.

December 22nd 2020 – Version 20.4.65.1667

Blog article

By Sascha Neumeier • Feb 8, 2021

PRTG 21.1.65 contains beta sensors for HPE, Azure, Veeam and OPC UA

The first stable release of 2021 for PRTG Network Monitor is here! By the way: PRTG release 21.1.65 is the 8th version in a row that our developers have programmed completely while working from home.
Read the complete blog post here

New

Experimental Features

Experimental Features	We added the option to enable experimental features in PRTG. Experimental features are still under development and not fully tested, but they are ready enough for you to try them out in a PRTG stable version. This makes it possible for you to already have a look at new upcoming features fresh from our labs without the need to install a PRTG canary version somewhere else, and you can provide us early feedback to enable us to learn from it before making a new feature available for all customers. You can only use an experimental feature if you explicitly enable the according option in the Experimental Features section in the PRTG web interface under Setup \| System Administration \| Monitoring. See also the Knowledge Base article Experimental Features in PRTG.
Beta Sensors	We introduce beta sensors as experimental feature with this PRTG version. As of now, you will only be able to add beta sensors and use them for monitoring if you enable the option in the experimental features section. The following beta sensors are new in this version. HPE 3PAR Common Provisioning Group: The HPE 3PAR Common Provisioning Group (BETA) sensor monitors a CPG of an HPE 3PAR storage system to help you ensure there is enough capacity available on your storage system. Microsoft Azure Storage Account: The Microsoft Azure Storage Account (BETA) sensor monitors your storage account in a Microsoft Azure subscription and shows latency, traffic, and capacity metrics. OPC UA Certificate: The OPC UA Certificate (BETA) sensor monitors the certificate of an OPC UA server and helps you to ensure a secure and consistent communication between the machines in your shop floor. Veeam Backup Job Status Advanced: The Veeam Backup Job Status Advanced (BETA) sensor monitors detailed information of a specific backup job that runs on the Veeam Backup Enterprise Manager. In previous PRTG versions, we already added the experimental sensor types Microsoft Azure SQL Database (BETA), Modbus RTU Custom (BETA), and OPC UA Custom (BETA). Together with the experimental features, we introduce the label NEW for sensor types that we recently added to PRTG and that are already available by default. Sensors with the NEW flag are fully supported and thoroughly tested, and you immediately see in the Add Sensor dialog that there are new sensors that can extend your monitoring. We transition all sensor types that we introduced with a BETA label in the last few PRTG versions to NEW so that you can simply continue your monitoring with these sensors. Older sensor types that still had the beta label are individually handled. We removed the flag for stable sensors and will discontinue and replace the others (see below for more information).
PowerShell Security Enhancement	The experimental feature PowerShell Security Enhancement hides PowerShell parameters that custom EXE/Script sensors use to avoid logging through external tools. This feature also reduces the resource usage of custom PowerShell sensors in certain cases and as such may improve their execution times.

Improved

Sensors

Auto-Discovery	PRTG now saves the channel settings of newer sensor types (for example, MQTT sensors) into device templates. Sensors added via auto-discovery automatically apply the configuration and you will not have to manually change the channel settings anymore to keep a consistent monitoring. You can now define include and exclude filters in custom device templates to limit which sensors are actually created during the auto-discovery when usually multiple sensors of the same type would be created (for example, create sensors only for specific drives or ports with a custom device template). For details, see the Knowledge Base article How can I include and exclude sensors from device templates? Note: This option is experimental and might not work properly in every case, so we would love to hear your feedback about it. You can now add IMAP and POP3 sensors that use secured connections (IMAPS and POP3S) via auto-discovery. In previous versions, the auto-discovery only supported unsecured IMAP and POP3 connections. You can now create device templates that include the following recently introduced sensor types to be able to add the sensors via auto-discovery: Dell EMC Unity Enclosure Health v2, Dell EMC Unity File System v2, Dell EMC Unity Storage Capacity v2, Dell EMC Unity Storage LUN v2, Dell EMC Unity Storage Pool v2, Dell EMC Unity VMware Datastore v2, Microsoft Azure Subscription Cost, Microsoft Azure Virtual Machine, Microsoft Azure SQL Database (BETA), Microsoft Azure Storage Account (BETA), OPC UA Server Status, OPC UA Certificate (BETA), OPC UA Custom (BETA)
Dell EMC Unity v2 sensors	We added the Total Size channel to the recently introduced Dell EMC Unity sensor types Dell EMC Unity Storage Capacity v2, Dell EMC Unity File System v2, Dell EMC Unity Storage Pool v2, Dell EMC Unity Storage LUN v2, and Dell EMC Unity VMware Datastore v2. Thank you for your feedback that you need this channel for a comprehensive monitoring of your Dell EMC Unity storage systems.
MQTT sensors	You can now use single-level (+) and multi-level (#) wildcards for the Topic that you want to monitor with MQTT Round Trip, MQTT Statistics, and MQTT Subscribe Custom sensors. The MQTT Statistics sensor now monitors Active Topics in a dedicated channel and shows the number of unique topics which send data. This channel enables you be notified if less devices send data as planned.
OPC UA Server Status	All session related channels of the OPC UA Server Status sensor now use counter units (sessions per second #/s) to more comprehensible show if something unusual is going on.

Improved

Notifications

Notification Triggers

We improved the content of History and Log entries for notification triggers. The entries appear much clearer now to enable you to more comprehensible see changes that added, modified, or removed triggers. We now also display the ID of each existing notification trigger on the notification trigger tabs so that you can better reference the history and log entries.

Thanks to these improvements, you will also easier understand which notification trigger was activated and why and where you configured the trigger.

Improved

Server

Installer	PRTG is now always installed as 64-bit version if the operating system on which you run the installer is 64-bit, and only installed as 32-bit version if the operating system is 32-bit. PRTG will also install the 64-bit version when you update a PRTG instance that was originally installed as 32-bit version on a 64-bit operating system. Previously, PRTG only checked the available RAM on the server and always installed the 32-bit version whenever there was less than 6GB RAM, even on 64-bit systems.
Memory	We reduced the memory consumption of sustained API write calls, for example, when setting object properties via the API.
PRTG GUI Starter	PRTG now more logically selects the browser on your system that works best with the web interface if you open it with the PRTG Network Monitor shortcut that is automatically created on the server where you install PRTG.

Improved

Security

API	We hardened the log routines in setobjectproperty.htm API calls.
Sensors	We improved the parameter handling of NetApp cDOT/ONTAP and VMware sensors to prevent external tools from logging them.
Web Server	We fixed a potential XSS vulnerability on report.htm.

Changed

Notifications

SMS Delivery

We removed all deprecated entries from the list of SMS service providers, which are the outdated BulkSMS endpoints. The removed entries automatically migrate to the corresponding new endpoints BulkSMS All regions (except South Africa) and BulkSMS South Africa with the update to this PRTG version.

If you have not manually changed the service provider to one of the new BulkSMS entries and tested the SMS delivery in previous versions, please check if PRTG still can send SMS messages after the update. The new BulkSMS endpoints use HTTPS (443) and as such you might need to adjust your firewall rules if you limit internet access from the PRTG server.

You can check your SMS delivery configuration and a successful delivery of SMS with the Test SMS Delivery button in the SMS Delivery settings. See the PRTG manual for details.

We also cleaned up the list of SMS service providers and only list the names of the providers now. You can still find endpoint, protocol, port, and additional information for each provider in the help box.

Fixed

Sensors

Common SaaS	The Common SaaS sensor shows an Up status again if all monitored services are reachable. We had to update the URL that the Dropbox channel uses because Dropbox deprecated their old API. The channel could not reach Dropbox anymore so that the sensor showed a Warning status in default configurations the past few weeks.
Custom Sensors	Custom sensor messages delivered within the element are again displayed in sensor messages and logs of custom sensor types like, for example, HTTP Push Data Advanced. We fixed the rare issue that sometimes custom sensors stopped working after an update due to unintentionally renamed custom sensor files on the probe system.
HTTP Push Data sensors	HTTP Push Data and HTTP Push Data Advanced sensors now keep and display their last value on device overview pages and map objects instead of showing No data after a scanning interval without a new value.
Microsoft Azure Virtual Machine	We improved the scan for available virtual machines (meta-scan) when you add the recently introduced Microsoft Azure Virtual Machine sensor. Previously, you could not create the sensor if the response of the meta-scan included UTF-8 characters. You received the error message An error occurred. The received JSON data could not be parsed. in this case.
NetApp cDOT/ONTAP sensors	This version comes with several improvements and fixes for NetApp sensors that monitor NetApp cDOT or ONTAP storage aggregates by accessing the API via SOAP. In general, we improved the approach on how the sensor names are automatically created when you add a new NetApp sensor, as well as manually changed sensor names are now correctly applied. We also fixed the Timeout (Sec.) setting that always applied 60 seconds when you added the sensor, no matter which value you entered, and we removed the beta flag from NetApp sensors where it still was there. The following changes apply to specific NetApp sensors. NetApp Aggregate: Bytes free % is now the primary channel by default. This channel is more useful for most customers than the previous primary channel Files. NetApp LIF: The channels Data received and Data sent now correctly show counter values instead of the sum. NetApp NIC: We added the lookup status Not available to the Healthy channel to prevent KeyNotFoundException errors and renamed the states Yes and No to Healthy and Unhealthy. NetApp SnapMirror: Created sensors are now named according to the destination instead of source, following the NetApp standard. We also changed the Lag channel to not show all decimal places anymore by default but to use the automatic approach. NetApp Volume: Size free % is now the primary channel by default. This channel is more useful for most customers than the previous primary channel Snapshot reserve free %. We also fixed an issue that appeared due to number converting when snapshots were too old.
REST Custom	The REST Custom sensor now supports angle brackets (<>) in POST requests to be able to correctly send XML to the target device, for example.
SNMP Cisco ASA VPN Traffic	We fixed the Sensor Behavior setting of the SNMP Cisco ASA VPN Traffic sensor. The sensor shows the correct status again if no connection is active just as you have defined it in the sensor settings.
SNMP Custom Table	We fixed the auto-discovery of the SNMP Custom Table sensor that occasionally did not create new instances of the sensor in the previous PRTG version 20.4.64. You can manually add SNMP Custom Table sensors using table_index as Identification Column again. In the previous PRTG versions 20.4.64 and 20.4.65.1667, adding the sensor using table_index failed with the error message Sorry, the scan for available monitoring items has failed! TPaeInternalList.GetValues: List index out of bounds: [...]. The column headers of the table in the sensor settings are displayed again when manually adding the SNMP Custom Table sensor. In the previous PRTG versions 20.4.64 and 20.4.65.1667, the table in the sensor settings had no column headers.
SNMP v3 sensors	SNMP sensors now will continue to properly work if you change SNMP v3 settings in the Credentials for SNMP Devices section of the parent device or group. In previous versions, changing SNMP v3 settings or switching to SNMP v3 often resulted in a down status of the according SNMP sensors with the error message could not create snmp session -1114 -2011, which you could only resolve with a restart of the PRTG probe service.
Veeam Backup Job Status	We fixed the limits of the Job Runs Warning and Job Runs Failed channels of the recently introduced Veeam Backup Job Status sensor. The channels now only cause a warning or down status if there is at least one warning or failed job run. We also shortened the channel names and improved the sensor help to make clearer for you what and how this sensor monitors.

Fixed

Server

Active Directory	Active Directory integration now supports angle brackets (<>) in the access password if you use explicit credentials.
Cluster	Devices that you clone to a remote probe in a cluster are immediately synchronized to the failover node again. In previous versions, the failover node only showed the cloned device after a restart of the failover.
Down (Acknowledged)	The status message of Down (Acknowledged) displays the PRTG server time again instead of just UTC.
Login	We fixed a misbehavior that occurred after you have changed the login name of a PRTG user account. The old login name was not updated in the internal dictionary nor deleted after changing it so that a new user account with the same login name could not login due to wrong credentials. This could happen, for example, when you added an Active Directory user to replace a local user account with the same login name.
Remote Probes	Remote probes that have special characters in their names automatically update and connect to the PRTG server again. In the previous PRTG version 20.4.64, characters like German umlauts or Japanese language characters in probe names prevented remote probes from automatically updating and required a manual update to connect.
Various	We implemented several other minor fixes and improvements for the PRTG core server.

Fixed

WebGUI

Login

Nombre de inicio de sesión has the correct position on the Spanish login page again and does not overlay the input field anymore.

Improved

Various

Languages	We updated and improved all language files.
All parts of PRTG	Various other minor fixes and improvements, updated user manual

Note

Sensors

Discontinued Sensors with PRTG 21.x.67

We will discontinue the following sensor types with PRTG version 21.x.67 that we plan to release in Q2 2021. Running sensors of theses types will still work for some more versions, but you will not be able to deploy them as of PRTG 21.x.67. If you use these sensors, we strongly recommend that you replace them with the superseding sensor types soon. If you encounter any remaining issues with the new sensors, please immediately contact us so that we can address them.

Cloud HTTP and Cloud Ping: Please use the recently introduced Cloud HTTP v2 and Cloud Ping v2 sensors instead to monitor your web servers and devices with an enhanced feature set and state-of-the-art technologies. (Update: Cloud HTTP and Cloud Ping sensors are not yet discontinued with PRTG 21.2.67 due to necessary stability improvements for the v2 sensors. We will discontinue both sensor types in another upcoming PRTG version.)
REST Dell EMC sensors: Please use the recently introduced Dell EMC Unity v2 sensors instead to monitor your Dell EMC storage systems with an enhanced feature set and state-of-the-art technologies.

Note: With PRTG 21.x.65, we already deprecated the GitLab Build Status sensor. You cannot add this sensor type anymore.

Discontinued Sensors Forecast

Further in the future, we will discontinue the following sensor types and replace them. These sensors will continue to work as you are used to it until we have introduced full replacements for them. You will find more information about the future development of the sensors on our public roadmap. We would love to get your input for new versions of these sensors!

Amazon CloudWatch sensors
Docker Container Status
REST Custom

November 18th 2020 – Version 20.4.64.1395

Improved

Languages

German

We updated the German language file.

Fixed

Sensors

OPC UA sensors

We improved the stability of the OPC UA Server Status BETA sensor and the experimental OPC UA Custom sensor. In the previous preview version 20.4.64.1362, OPC UA sensor scans with longer scanning intervals often failed after the first successful scan due to interference with the internal connection timeout.

Fixed

Graphs

Graph Display

Primary channels in live and historic data graphs have a line again and do not only show the colored background anymore as in the previous preview version 20.4.64.1362.

November 5th 2020 – Version 20.4.64.1362

Blog article

By Sascha Neumeier • Dec 4, 2020

PRTG 20.4.64 includes native sensors for Veeam and Azure

PRTG Network Monitor release 20.4.64 is our 10th scheduled version this year, and it includes a lot of great stuff! PRTG 20.4.64 comes with three new sensor types, including the first one for...
Read the complete blog post here

New

Sensors

Dell EMC Unity Enclosure Health v2	The new Dell EMC Unity Enclosure Health v2 BETA sensor monitors the health of a disk-array enclosure (DAE) or a physical or virtual disk processor enclosure (DPE) on a Dell EMC storage system. It shows the health status and, depending on the target device, temperatures as well as the status of cooling modules, drives, storage processors, power supplies, and link control cards. This sensor will help you to ensure your Dell EMC Unity enclosure is always working as expected.
Microsoft Azure Subscription Cost	The new Microsoft Azure Subscription Cost BETA sensor monitors the cost in a Microsoft Azure subscription so that you can keep track of the overall expenses of your subscription. It shows the current and previous period cost, the cost forecast, user budgets, and the most expensive service by category.
Veeam Backup Job Status	The new Veeam Backup Job Status BETA sensor monitors the status of all backup job runs on the Veeam Backup Enterprise Manager in the last 24 hours. It shows the number of successful and failed job runs, running and finished job runs, job runs in warning states, and scheduled backup jobs. This sensor gives you a general overview of the status of your backup jobs so that you see the jobs which need your immediate attention at a glance.

Improved

Sensors

Modbus TCP Custom	Thanks to your feedback, we implemented several improvements for the Modbus TCP Custom BETA sensor that we introduced in the last PRTG version. We improved the usage of the sensor settings. We increased the range for register addresses. Register numbers can now start from 0. You can define a lower scanning interval than 60 seconds. The sensor log provides more information. We updated help texts and documentation. Important: After updating from PRTG 20.4.63 to 20.4.64 or later, you will have to add the sensor anew. Running Modbus TCP Custom sensors will show a down status after you have installed the update due to changes in our underlying Modbus monitoring configuration.
MQTT sensors	You can now create device templates that include the sensor types MQTT Round Trip, MQTT Statistics, and MQTT Subscribe Custom. You can use the device templates to add MQTT sensors via auto-discovery.
MySQL v2	The MySQL v2 sensor now supports authentication with caching_sha2_password on MySQL 8.0 and later. In previous versions, the sensor showed the error message Authentication method 'caching_sha2_password' not supported by any of the available plugin when you tried to monitor MySQL server version 8.0.
OPC UA Server Status	We further improved the OPC UA Server Status BETA sensor that we introduced in the last PRTG version. Thank you for your feedback! The sensor can now monitor session related metrics if diagnostics data is activated on the server, so that PRTG can notify you if there are too many ongoing sessions or the amount of timeout sessions increases. We added support for authentication with username and password, as well as you can use encryption and provide a certificate to authenticate the sensor against the OPC UA server. We improved the general performance of OPC UA sensors in this version by minimizing their network communication. We drastically reduced the amount of log entries that OPC UA sensors write into the probe.log file.
SSL Certificate	The SSL Certificate sensor has a new timeout setting for TCP read requests, which is useful if you monitor a slow server with the sensor.

Fixed

Sensors

Cisco IP SLA	Tag and Owner are now in the correct column when adding the Cisco IP SLA sensor. Furthermore, the sensor will not erroneously add a vendors_cisco tag to a device anymore when you run an auto-discovery and the discovered device is not a Cisco device.
Google Analytics	You can add Google Analytics sensors again. The sensor type needed a new OAuth verification by Google to be able to access data.
HTTP Push Data sensor	The HTTP Push Data Advanced sensor now applies the unit to a channel value if provided in the push message and as defined in the Channel Unit Configuration settings.
HTTP Transaction	Smart URL Replacement in the HTTP Transaction sensor now even works if you use the Alternate/Compatibility Mode as Monitoring Engine. In previous versions, the URL replacement only worked with the recommended default monitoring engine. Please note that support for ports in smart URL replacement when using the compatibility mode will only come with a later version.
SNMP Custom Table	We fixed an issue with SNMP Custom Table sensors that are created via auto-discovery. In certain cases, the sensors were created with invalid IDs and uncommon sensor names and immediately showed a down status after creation.
SQL v2 sensors	We fixed an issue with SQL v2 sensors that caused a down status with the message Error: An item with the same key has already been added because PRTG did not properly reset the parameters after a sensor timeout.
WMI sensors	The auto-discovery with template can add certain WMI sensors again. In previous versions, you could not add the sensor types WMI Exchange Server, WMI Sharepoint Process, and WMI Vital System Data v2 sensors, for example, by using an auto-discovery with template.

Fixed

Server

Active Directory	If you change the Login Name of an Active Directory user account in PRTG, it is not possible anymore to login with the changed login name because this user account does not exist in the Active Directory. The login with the original login name still works and will create a new Active Directory user account in PRTG. In previous version, the behavior in such cases was unreliable.
API	We fixed an issue with historic data queries via the PRTG API. In certain scenarios, the queries could take too much time since we improved the memory consumption of historic data queries in PRTG 20.1.57.
Config	We fixed a potential deadlock that could happen when PRTG saved the configuration, resulting in a server crash in rare cases.
Languages	The Local Probe now keeps its name after a server restart in Japanese, Russian, and Chinese language versions. In previous versions, the name of the probe was overridden by question marks (??) after a restart.
Login	We fixed an issue with the login of PRTG user accounts that occurred in rare cases when changing the password of a user who was logged in into PRTG Desktop at the same time. A re-login was not possible for some time in such cases.
Maps	We fixed a potential deadlock that could happen in rare cases when using the Map Designer. PRTG became unresponsive in such cases and required a server restart to work again.
Multi-Edit	You can edit the settings of multiple devices, groups, and probes at once again. In previous versions, multi-edit on these objects resulted in an error with the message The validation of the data you entered has failed when you saved your changes. Multi-editing limits of sensors now properly works for sensors with channels that display data in percent of the maximum value. In previous versions, the applied limit values were incorrect if two or more multi-edited channels had different maximum values.
Notification Templates	We removed some redundant entries from the History tab of notification templates that still appeared on 64-bit installations of PRTG.
Reports	Links to sensors and devices in PDF reports work again. In previous versions, the links included a wrong port and could not be opened.
Uninstall	We fixed an issue that prevented a clean uninstall of PRTG on Windows 10 Pro 64-bit instances.

Fixed

WebGUI

Libraries

You can collapse and expand library nodes again.

Fixed

System Information

Data	The System table on System Information tabs shows data for specific SNMP devices again. In previous versions, PRTG could not retrieve system information data from SNMP devices if an interface had multiple IP addresses. You received the message Error: duplicates not allowed in this case.

Fixed

PRTG for Android

Sorting

Sorting by status in the alarms section of PRTG for Android corresponds to the sorting in the web interface again if you connect your app to PRTG version 20.4.64 and later.

Note

Sensors

Beta Sensors

The following sensor types are not in beta status anymore and are now fully supported.

AWS Cost
Cloud HTTP v2
Cloud Ping v2
DNS v2
Microsoft 365 Service Status
Microsoft 365 Service Status Advanced
MQTT Round Trip
MQTT Statistics
SNMP Nutanix Cluster Health
SNMP Nutanix Hypervisor
SNMP Fujitsu System Health v2
WMI Microsoft SQL Server 2019
Zoom Service Status

Experimental Sensors

We added two new experimental sensors that you can manually enable.

Microsoft Azure SQL Database: The experimental Microsoft Azure SQL Database sensor monitors your Microsoft Azure SQL Database instances so that you are notified if there is an issue with your SQL instance. The sensor in the current experimental status has the known issue that the sensor will stop working as expected it if the database type changes or has changed from vCore to DTU or vice-versa. If you try out the sensor and encounter this issue, we would kindly ask you to contact us and provide the sensor logs if possible. This will help us to further develop the sensor.
Modbus RTU Custom: The experimental Modbus RTU Custom sensor monitors up to 5 values that your Modbus RTU device returns.

Improved

Various

All parts of PRTG

Various other minor fixes and improvements, updated user manual, updated German language file

Note

Known Issue

Remote Probes

Some customers reported connection issues of remote probes after the update to PRTG 20.4.64.1402. We found out that special characters in the name of a remote probe can prevent the probe from receiving the update and from connecting to the PRTG server. Characters that may cause this issue are, for example, German umlauts (ä, ö, ü) or Japanese language characters.

Workaround: To reconnect an affected remote probe in such a case, manually update the remote probe (download the remote probe installer from the web interface and run it on the remote probe system), or open the PRTG Administration Tool on the remote probe system and remove special characters from the name of the probe under probe settings until we can provide a fix.

October 16th 2020 – Version 20.4.63.1411

Improved

Languages

Language Files

We updated the German and Japanese language files.

Fixed

Sensors

SNMP Custom Table

We fixed an issue with SNMP Custom Table sensors that were not properly created in some cases because of incorrectly retrieved identifiers. The issue appeared in the previous PRTG 20.4.63 preview versions and affected the manual adding of the sensors as well as adding them via auto-discovery.

October 9th 2020 – Version 20.4.63.1404

Fixed

Server

Startup

We fixed an issue that could prevent PRTG from starting with the last preview version 20.4.63.1395. Libraries without filter caused a loop so that the start of PRTG got stuck after loading the config.

October 2nd 2020 – Version 20.4.63.1395

Blog article

By Sascha Neumeier • Nov 6, 2020

5 brand-new sensors! PRTG Network Monitor 20.4.63 released

It was at the end of October when we released our PRTG Network Monitor Release 20.4.63 as a stable release. Some of you are probably already working with the latest version, all others can't wait...
Read the complete blog post here

New

Sensors

Dell EMC Unity VMware Datastore v2	The new Dell EMC Unity VMware Datastore v2 BETA sensor monitors a VMware datastore on your Dell EMC Unity storage system. With this sensor type, you can keep track of the free size of a VMware datastore on your Dell EMC storage, as well as you will always see the number of hosts, virtual machines, and virtual drives at a glance.
Microsoft Azure Virtual Machine	The new Microsoft Azure Virtual Machine BETA sensor monitors the status of a virtual machine in a Microsoft Azure subscription. Additionally to the overall status of a virtual machine, you can also monitor CPU usage as well as used and remaining CPU credits with this sensor. This will help you to act before your credits run out and the virtual machine stops.
Modbus TCP Custom	The new Modbus TCP Custom BETA sensor monitors values that your Modbus TCP server returns. With this new sensor type, you can keep an eye on your environment equipment like cooling units, power supply, backup generators, and temperature. This helps you to ensure your infrastructure always runs at its best.
OPC UA Server Status	The new OPC UA Server Status BETA sensor monitors status, uptime, and diagnostic information of your OPC UA server. With this new sensor type you can ensure your devices are available using OPC UA and your production processes run flawlessly. In this version, you can also try out an experimental OPC UA Custom sensor that you can manually enable. The sensor monitors multiple nodes of OPC UA servers and returns the contained values.
Soffico Orchestra Channel Health	The new Soffico Orchestra Channel Health BETA sensor monitors the availability of the Soffico Orchestra API and shows the status and overall number of successful and failed channel calls.

Improved

Sensors

Cloud HTTP v2	The Cloud HTTP v2 BETA sensor now supports Smart URL Replacement like other HTTP sensors. With this functionality, you can easier define custom URLs that you want to monitor with this sensor type.
Exchange (PowerShell) sensors	You can now monitor Exchange Server 2019 with all Exchange (PowerShell) sensors. The sensor types support all Exchange server versions as of 2010. Exchange Backup (PowerShell) Exchange Database DAG (PowerShell) Exchange Database (PowerShell) Exchange Mailbox (PowerShell) Exchange Mail Queue (PowerShell) Exchange Public Folder (PowerShell)
SNMP Cisco ASA VPN Connections	We improved the error handling of the SNMP Cisco ASA VPN Connections sensor. In cases where the requested OID of a channel is missing on the target device, the OID is now shown in the sensor message with according information and the sensor keeps its status. In previous versions, the sensor showed a down status with the error message "No such object" (SNMP error # 222) in such cases even if other channels were able to retrieve data.
SNMP Cisco ASA VPN Traffic	We added the option to monitor VPN connections that work with IKEv2 tunnels to the SNMP Cisco ASA VPN Traffic sensor. You can choose the new IKEv1 and IKEv2 option in the IKE Version Handling section of the sensor settings in this case. Note: This option is in beta status and might not work properly in every case, so we would love to hear your feedback about it. Please send it to [email protected].

Changed

Sensors

Microsoft 365 Service Status

Degraded services in the Microsoft 365 Service Status BETA sensor now result in a warning status instead of down by default. This change also corresponds to the status definition of degraded services in the Microsoft 365 Service Status Advanced BETA sensor, where degraded services were always defined as warning status.

Improved

Notifications

Notification Templates

We improved the content of the History tab for notification templates. The history of a notification template now only shows one entry per creation or modification and only the settings that were actually changed. The entries have a clearer wording aligned to other places in the web interface and referenced objects are written with both their name and ID. This will help you with tracking the creation and changes of a specific notification template.

Notification Triggers

You can now define if you want to inherit notification triggers from parent objects for new sensor types. Several sensor types that we added over the last few PRTG versions were missing the inherit option on their Notification Triggers tab and showed the message (Property not found) instead.

Improved

Server

Libraries

We slightly improved the performance of libraries by changing the approach of how libraries are calculated to event-based instead of doing regular polling. You will especially benefit from this improvement if you have libraries with a high amount of sensors.

Fixed

Sensors

Sensor Messages

Sensors now keep their messages even if you change a channel setting like limits or spike filter that causes a recalculation. In older PRTG versions, the current sensor message disappeared after such a change.

Sensor Statistics

Sensors now show a calculated value for uptime, downtime, and coverage in the general information section on a sensor's overview tab even if they never left the down status but receive values. This can be the case if limits are breached or lookup values cause the down status directly upon sensor creation. In older PRTG versions, sensors showed N/A for uptime, downtime, and coverage in such cases.

Fixed

Server

API

We fixed an inconsistency that appeared in the results of the column groupnum in getobjectstatus.htm API calls in certain cases. Depending on your device tree structure, the call sometimes returned incorrect values for the number of groups.

As of this version, groupnum always returns the correct number of subgroups if you perform the call for a specific group, and the number of all groups plus one for root if you perform the call for root (id=0) just as shown on the system status page.

Fixed

WebGUI

System Information

The column headers of tables on System Information pages are correctly displayed again.

Improved

Various

Language Files	We updated the German and Japanese language files.
All parts of PRTG	Various other minor fixes and improvements, updated user manual

Changed

Tree version

Tree version update

The configuration file of this version is not downwards compatible with previous PRTG versions.

Note

Known Issue

Libraries

We detected an issue with libraries in PRTG version 20.4.63.1412. Filtering on a Linked Object does not work. A library node will always show all sensors of a PRTG instance that match the filter, not only matching sensors of the linked object. Furthermore, Filter by Tags does not properly work.

If you actively use filtered libraries, especially in combination with notification triggers, we strongly recommend that you do not install PRTG 20.4.63.1412.

Status: Resolved with PRTG version 20.4.63.1427.

September 11th 2020 – Version 20.3.62.1395

Improved

Sensors

Zoom Service Status

The Zoom Service Status BETA sensor now supports the status Under Maintenance in all channels. We defined it as Warning status because the monitored Zoom service does not work as expected when it is under maintenance. The new status is necessary to reflect a change in the Zoom API, which recently resulted in an undefined lookup error in the Meeting Telephony Services channel.

Improved

Languages

Various

We updated the German and Dutch language files, as well as we improved translations in several places in the Spanish and French files.

Fixed

Server

Cluster

PRTG correctly shows the Down (Partial) status again. In the previous PRTG 20.3.62 preview versions, the status incorrectly showed up even if a sensor was down on all cluster nodes, as well as it did not show up if a sensor was up on at least one cluster node.

September 4th 2020 – Version 20.3.62.1380

Fixed

Server

Cluster

We fixed an issue with cluster installations where failover nodes could not properly load language and lookup files on startup when certain sensor types were running on the instance. The failover node did not work anymore in this case. The issue was caused by some of the new sensor types we introduced over the last couple of PRTG versions, for example, DNS v2, AWS Cost, and MQTT sensors.

August 31st 2020 – Version 20.3.62.1369

Blog article

By Sascha Neumeier • Sep 28, 2020

Another 6 new sensor types in PRTG Network Monitor 20.3.62

After our last release in August with 5 brand new sensor types, PRTG version 20.3.62 again brings a lot of new features. Besides improvements in the context menu and a new notification method, we...
Read the complete blog post here

New

Sensors

Cloud HTTP v2	The new Cloud HTTP v2 BETA sensor monitors a web server and shows the loading times from different locations. It is the successor of the Cloud HTTP sensor introduced with PRTG 14.x.14 that we will deprecate and remove from PRTG in an upcoming version depending on your feedback for the new Cloud HTTP v2 sensor. The new sensor uses a new technology in the backend and comes with an enhanced feature set. For example, you can now individually define the regions that you want to use for the requests.
Cloud Ping v2	The new Cloud Ping v2 BETA sensor monitors the ping times to a device from different locations. It is the successor of the Cloud Ping sensor introduced with PRTG 14.x.14 that we will deprecate and remove from PRTG in an upcoming version depending on your feedback for the new Cloud Ping v2 sensor. The new sensor uses a new technology in the backend and comes with an enhanced feature set. For example, you can now individually define the regions that you want to use for the requests.
Dell EMC Unity File System v2	The new Dell EMC Unity File System v2 BETA sensor monitors a file system on a Dell EMC Unity storage system. It shows free size, allocated size, as well as size and number of snapshots. This new Dell EMC Unity storage sensor supports Unity OE API version 5 and later, which the existing REST Dell EMC File System BETA sensor is not capable of.
Dell EMC Unity Storage Capacity v2	The new Dell EMC Unity Storage Capacity v2 BETA sensor monitors a Dell EMC storage system and shows free size, used size, preallocated size, and subscribed size. This new Dell EMC Unity storage sensor supports Unity OE API version 5 and later, which the existing REST Dell EMC Capacity BETA sensor is not capable of.
Dell EMC Unity Storage Pool v2	The new Dell EMC Unity Storage Pool v2 BETA sensor monitors a storage pool on a Dell EMC Unity storage system. It shows the health status of the storage pool, as wells as several size metrics. This new Dell EMC Unity storage sensor supports Unity OE API version 5 and later, which the existing REST Dell EMC Pool BETA sensor is not capable of.
WMI Microsoft SQL Server 2019	You can now monitor your Microsoft SQL Server 2019 with PRTG! The new WMI Microsoft SQL Server 2019 BETA sensor monitors your database performance and shows values from SQL General Statistics, Access Methods, the Buffer Manager, the Memory Manager, the Locks Manager, and SQL Statistics.

New

Notifications

MQTT Messages

You can now connect PRTG to your MQTT broker and send (publish) messages with placeholders about alerts to a custom topic. Your MQTT infrastructure can then process the messages further.

Together with the three MQTT sensor types that we already released in previous versions, PRTG as an all-inclusive solution will help you to easier operate your MQTT infrastructure, day by day.

Improved

Server

Cluster

We improved the scope of read- and write-locks in PRTG cluster installations. This leads to a slightly better overall cluster performance in certain monitoring configurations.

Improved

WebGUI

Context menus

Context menus in the device tree now better reflect the actual access rights of a PRTG user account. Users with restricted permissions to an object (for example, users with read access to the object) can only click the menu items if they are allowed to perform the corresponding action.

Changed

API

Access rights	Querying access rights via the API as treejson now returns 0 for no rights 100 for read rights 200 for read/write rights In previous versions this was 0 for no rights and 1 for read/write rights. The change was necessary to improve the context menus regarding access rights (see above).
Types	API calls return type_raw without index again. For example, you will now receive device if you perform an according API call instead of device[1] as it was the case in previous versions.

Fixed

Sensors

Google Drive	You can add Google Drive sensors again. The sensor type needed a new OAuth verification by Google to be able to access data. Please note that the Google Analytics sensor is still in the re-verification process and still cannot be created.
SNMP Cisco CBQoS	The SNMP Cisco CBQoS sensor now supports the types tunnel(8) and wirelessInterface(9). In previous versions, created sensors of this type had incorrect names if tunnel or wireless interface were returned by the target device.
VMware Host Hardware Status (SOAP)	The VMware Host Hardware Status (SOAP) sensor now shows an appropriate warning message and instructions if no hardwareStatusInfo is available on the target device. In previous versions, the sensor showed no message in this case.
Zoom Service Status	The Zoom Service Status BETA sensor now supports the status Under Maintenance in all channels. We defined it as Warning status because the monitored Zoom service does not work as expected when it is under maintenance. The new status is necessary to reflect a change in the Zoom API, which recently resulted in an undefined lookup error in the Meeting Telephony Services channel.

Fixed

Server

Cluster

We improved the stability of PRTG cluster updates. In certain cases, it was not possible to update failover nodes due to a failing license check. PRTG showed a License invalid error message in such cases.
We fixed an issue with cluster installations where failover nodes could not properly load language and lookup files on startup when certain sensor types were running on the instance. The failover node did not work anymore in this case. The issue was caused by some of the new sensor types we introduced over the last couple of PRTG versions, for example, DNS v2, AWS Cost, and MQTT sensors.

Geo Maps

We fixed an issue with the automatic resolution of geo locations when adding a new remote probe. Windows systems with a language setting that does not use a point as decimal separator (for example, comma in German) resulted in an invalid format of the coordinates.

Improved

Various

Languages	We updated the German and Dutch language files, as well as we improved translations for Spanish, French, Russian, and Simplified Chinese in several places.
All parts of PRTG	Various other minor fixes and improvements, updated user manual

July 29th 2020 – Version 20.3.61.1638

Blog article

By Sascha Neumeier • Aug 24, 2020

PRTG Network Monitor 20.3.61 includes 5 brand new sensor types

Finally! Our latest PRTG version 20.3.61 has been available for download in the stable channel for a few days now, and the release is a blast! No less than 134 resolved issues including 5 new...
Read the complete blog post here

New

Sensors

Dell EMC Unity Storage LUN v2	The new Dell EMC Unity Storage LUN v2 BETA sensor monitors a LUN on a Dell EMC Unity storage system. It shows the health status of the LUN, as well as several size metrics. This new Dell EMC storage sensor also supports Unity REST API version 5 and later, which the existing REST Dell EMC LUN BETA sensor is not capable of.
Microsoft 365 Service Status	The new Microsoft 365 Service Status BETA sensor monitors the overall status of all services of a Microsoft 365 subscription. It shows the total number of operational services, degraded services, interrupted services, and services in warning status. With the help of this sensor type, you will always see the status of your Microsoft 365 services at a glance and can immediately step in before the workflow of your entire company is affected if there is an issue. See also the Knowledge Base articles How and where do I obtain credentials for Azure AD? and How do I set permissions for the Office 365 Management APIs? for more information on how to add the sensor.
Microsoft 365 Service Status Advanced	The new Microsoft 365 Service Status Advanced BETA sensor monitors the detailed status of all services of a Microsoft 365 subscription. With this sensor, you get a detailed status of all Microsoft 365 applications and products you are subscribed to like, for example, Microsoft Teams, Exchange Online, Skype for Business, OneDrive for Business, or Planner. You can individually define in the Add Sensor dialog which Microsoft 365 services you want to monitor and create a sensor for. See also the Knowledge Base articles How and where do I obtain credentials for Azure AD? and How do I set permissions for the Office 365 Management APIs? for more information on how to add the sensor.
MQTT Subscribe Custom	The new MQTT Subscribe Custom BETA sensor subscribes to an MQTT topic and monitors the returned values. It can show up to five numerical values from the received JSON data. Together with the MQTT Round Trip BETA and MQTT Statistics BETA sensors that we released in previous versions, you are now perfectly equipped for MQTT monitoring with PRTG.
Zoom Service Status	The new Zoom Service Status BETA sensor monitors the global status of each Zoom service. It shows the operational states of the services and according error messages if something went wrong. This new sensor type will help you to always know about the availability of Zoom to be able to immediately react if there is an issue, which is especially important if your company relies on remote work via Zoom.

Changed

Sensors

EXE/Script and EXE/Script Advanced

The EXE/Script sensor and the EXE/Script Advanced sensor now require PowerShell 3.0 on the probe and target system, as well as .NET 4.7.2 on the probe system.

MQTT Round Trip and MQTT Statistics

While implementing the new MQTT Subscribe Custom sensor, we also moved the Port setting for the connection to the MQTT broker from the sensor settings to the Credentials for MQTT settings on device, group, and probe level. This affects the existing MQTT Round Trip BETA and MQTT Statistics BETA sensors. Running instances of these sensor types will show a down status with error code PE270 after you have updated to PRTG 20.3.61.

If you use the default port 1883 for MQTT connections, please manually re-scan your MQTT sensors to bring them up again. If you use another port for MQTT connections, please change the port in the Credentials for MQTT settings of the MQTT sensors' parent device (or on group or probe level if you inherit the settings) and re-scan the sensors.

Improved

Sensors

Core Health	The Core Health sensor shows more information about the health of the PRTG core server. It now monitors the number of Notifications in Send Queue, the Number of State Objects, and the number of Probe Messages per Second in 3 new channels. The additional information will help us to better help you if you encounter issues with your PRTG installation.
DNS v2	The DNS v2 BETA sensor now fully supports devices with FQDN or host names. In previous versions, the sensor occasionally was only able to monitor devices that have an IP address defined in the settings.
MQTT sensors	We introduced connection sharing for MQTT sensors. The sensors now open only one connection per broker URL, so in general less clients will be connected to the broker. We improved the error handling of MQTT sensors. For example, the MQTT Round Trip v2 BETA sensor now shows a down status if there are wrong or missing entries in the Client Authentication settings.

Improved

Server

Auto-Discovery	You can now see in the device tree if an auto-discovery for a device is in queue. In this case, the device will show the message Auto-Discovery pending, for example, when there already run auto-discoveries on 10 devices at the same time.
Notification Delivery	You can now also test the configuration of your fallback SMTP relay server in the Notification Delivery settings. PRTG will try to send a test e-mail to both SMTP relay servers if you click Test SMTP Settings and adds an according entry to Logs \| System Events \| Notification Related.

Fixed

Sensors

NetApp Volume	The NetApp Volume BETA sensor can now handle big return values. In previous versions, the sensor showed a down status because a conversion error if, for example, there were snapshots older than a few years on the volume.
SSH Meminfo	The SSH Meminfo sensor is now DASH compatible and can monitor Ubuntu devices again. The SSH Meminfo sensor can now also monitor target systems where /proc/zoneinfo information is not available.

Fixed

Server

Pause	Sensors now resume monitoring after your defined timespan elapsed even if you paused them indefinitely first. In previous versions, the sensors indefinitely kept the paused by user status in such cases.
Reports	We fixed an issue where in rare cases historic data reports for Sensor Factory sensors still did not contain values if you selected No Interval (Display Raw Data) as Average Interval after the initial fix in the last PRTG version.
Time zones	Time zones that you individually define for reports or other PRTG user accounts are saved and correctly applied again.
Various	Several other fixes and improvements for the PRTG server.

Improved

Various

All parts of PRTG

Various other minor fixes and improvements, updated user manual, updated language files (German, Spanish, Portuguese, and French)

Note

PRTG hosted by Paessler

PRTG 20.3.61.1663

PRTG version 20.3.61.1663 that we rolled out on PRTG hosted by Paessler includes the same changes as PRTG 20.3.61.1649. Additionally, it is now possible to use the beta sensor types AWS Cost, DNS v2, MQTT Round Trip, and MQTT Statistics on hosted instances, as well as the sensor types that we newly introduced with PRTG 20.3.61.

July 1st 2020 – Version 20.2.60.1590

Fixed

Server

Password Recovery	You can set a new password again using the Forgot password? option on the login page of the PRTG web interface. This did not work in the previous PRTG preview version 20.2.60.1535.
Public Maps	Maps with Public Access that you open without being logged in into PRTG are displayed again. You were not able to see the content of public maps in the previous PRTG preview version 20.2.60.1535.
PRTG Status	Synchronization statistics about configuration requests on the PRTG Status page are available again. They were not visible in the previous PRTG preview version 20.2.60.1535.
Stability	We fixed an access violation that appeared in the context of notifications in the previous PRTG preview version 20.2.60.1535.

Improved

Languages

German and Japanese

We updated the German and Japanese language files.

June 19th 2020 – Version 20.2.60.1535

Blog article

By Sascha Neumeier • Jul 17, 2020

Some news about PRTG Network Monitor version 20.3.60

PRTG version 20.3.60 is available on the stable release channel since a few days ago! The new version contains 163 resolved issues, several security improvements, more options and improvements for...
Read the complete blog post here

New

PRTG hosted by Paessler

Multi-factor authentication	You can now log in to my-prtg.com and your hosted PRTG instance with multi-factor authentication. Please see this KB article for more information on how to enable it.
Custom lookups, MIBs, OIDlibs	You can now have our support upload your custom MIBs, OIDlibs, lookups, and other custom PRTG files for you. The files will be persistently stored with your instance. Please contact our support team if you would like to upload and use some files of these types to use them with your hosted PRTG instance.

Improved

Sensors

Amazon CloudWatch sensors	We added the region Europe (Stockholm) (eu-north-1) to all Amazon CloudWatch sensors so that you are able to monitor AWS instances located there.
VMware Host Hardware (WBEM)	We added a lookup file for the Healthstate channel of the VMware Host Hardware (WBEM) sensor to visualize the health status in a more comprehensible way. Note: To apply the new lookup file prtg.standardlookups.esxelementhealthsensor.healthstate, you have to add running sensors of this type anew.
WMI Disk Health and WMI Storage Pool	We added the WMI Disk Health sensor to the standard auto-discovery, and the WMI Storage Pool sensor to the detailed auto-discovery. We also removed the beta status from both sensor types. They are now fully supported. Thank you for your feedback!

Improved

Server

Active Directory	We added a validation for domain controllers that you can individually define for the PRTG Active Directory integration since the last version 20.2.59. PRTG checks if the IP addresses and DNS names that you enter for primary and backup domain controllers exist and if the according host is a domain controller. If not, you will not be able to save your changes to the settings to avoid issues afterwards.
Dependencies	We improved the performance of the dependency calculation. This is especially noticeable when changing dependencies in larger PRTG installations with several thousands of sensors. PRTG now only uses potentially affected monitoring objects in the device tree to calculate dependencies, which significantly reduces the number of performed operations compared to the previous approach. Previously, all objects were considered for calculation, which could result in frequent Ajax timeouts on some large installations due to the huge number of operations.
Licenses	We improved the license information for PRTG Enterprise Monitor that appears on various places in PRTG to always provide you correct information about your license.

Improved

Notifications

Amazon SNS	You can now send Amazon Simple Notification Service (SNS) messages to encrypted topics. In previous versions, SNS notifications only worked for non-encrypted topics. We added new regions to the Location setting of Amazon SNS notifications. You can now choose any region for SNS notifications that AWS currently provides.
SMS Delivery	You can now use HTTP basic authentication for custom service providers to deliver SMS notifications. If your provider requires authentication, you can define this with the according HTTP Authentication option in your SMS Delivery settings. Note: Using basic authentication for custom service providers was already possible with a registry key option in previous versions (see the Knowledge Base article Basic authentication for SMS Delivery). If you have applied this registry key, PRTG will still use basic authentication for SMS delivery after updating to the current version. We added updated endpoints for BulkSMS delivery. You can now choose www.bulksms.co.uk (https/443) or, if you are located in South Africa, bulksms.2way.co.za/ (https/443) to send SMS notifications with BulkSMS. The new endpoints use encryption (HTTPS) and run on a standard port (443). We marked all other entries for BulkSMS in the list of service providers as deprecated and will remove them in an upcoming PRTG version to simplify configuration. We marked all other entries for BulkSMS in the list of service providers as deprecated and will remove them in an upcoming PRTG version to simplify configuration. We recommend that you update your SMS Delivery settings already now and check that the new endpoints work in your configuration to avoid any issues when we finally remove the deprecated endpoints. Note: We also removed Clickatell from the list of service providers. This provider is deprecated since PRTG version 17.1.30.
Notification Content	We improved the handling of notifications that include certain characters like em dash (—) or non-breaking spaces (like in a resolved %history placeholder). In previous versions, notifications including such characters were not properly displayed.

Improved

Security

Web Server

We fixed a security issue that allowed unauthenticated users to show status information about the PRTG installation. Thanks to Christian Varas for reporting the issue. (CVE-2020-11547)
We fixed a potential XSS vulnerability that could be exploited as part of a chained attack via a malicious URL. Thanks to Dmitry Galecha from Positive Technologies for reporting the issue.
The HTTP session cookie is initialized as secure again. The secure cookie attribute is always set when accessing PRTG via a secure connection.
We fixed a potential XSS vulnerability on alarmsgauges.htm and device.htm.

Sensors

Minor security fix for the VMware Virtual Machine (SOAP) sensor

Fixed

Sensors

EXE/Script Advanced	The meta-scan of EXE/Script Advanced sensor now supports the placeholders %device and %deviceid as described in the Knowledge Base article Using the Meta-Scan Functionality for EXE/Script Advanced Sensors.
IMAP	If you change the sensor behavior setting of a running IMAP sensor from the count or process emails option back to the default option Check connectivity only, do not process emails, the connectivity check will now also work without valid credentials. In previous versions, the sensor still used the authentication settings to connect to the mailbox in this case.
NetApp I/O	We improved the handling of very big values (64-bit unsigned integer) returned to the NetApp I/O sensor. In previous versions, the sensor showed 0 values in this case due to an issue with the internal value processing.
SNMP Nutanix Hypervisor	We improved the stability of SNMP Nutanix Hypervisor BETA sensors. In previous versions, this sensor type could cause NULL bytes in the PRTG configuration file, resulting in changes to PRTG that were not saved anymore after the NULL bytes appeared. We aligned the naming of two SNMP Nutanix Hypervisor BETA sensor channels to the official wording of Nutanix. Newly added sensors of this type now create the channels Packets Drop In and Packets Drop Out instead of using the word packages.
SSL Certificate	The Days to Expiration channel of the SSL Certificate sensor now uses the hash sign (#) as unit. In previous versions, the channel had no unit.
Lookups	If you edit a lookup file that is used by a running sensor, the sensor will reflect the changes on the lookup without the need of a PRTG server restart again. The sensor will show the current status of the lookup file right after you reload the lookup files via the Administrative Tools in the PRTG System Administration.
Performance Impact Bars	Performance impact bars in the Add Sensor dialog show the correct help text again when you point your mouse on them. Performance impact bars for the sensor types DNS v2, MQTT Round Trip, and MQTT Statistics are now also available on sensor pages.
Sensor Channels	We fixed an issue with very small values (less than 0.0001) in sensor channels having the option to show all decimal places enabled. Sometimes the most significant digit in the channel value was missing in this case.

Fixed

Server

Auto-Update	We improved the stability of automatic PRTG updates. In certain cases, the PRTG auto-update did not successfully complete in previous versions and you had to manually install the new PRTG version.
Passwords	We fixed an issue with newly generated PRTG Administrator user passwords using the PRTG Administration Tool, for example, on failover nodes in a cluster. Please log in as PRTG Administrator user at least once after generating a new password and perform a proper server restart to ensure the password keeps working after another PRTG server restart.
Reports	Historic data reports for Sensor Factory sensors contain values again even if you select No Interval (Display Raw Data) as Average Interval.

Fixed

Languages

French	This version comes with the most current French language file again. In the previous PRTG version 20.2.59, we delivered an old French version by accident. Veuillez nous excuser pour la gêne occasionnée.
Various	We updated the German, Japanese, and Dutch language files.

Improved

Various

All parts of PRTG

Various other minor fixes and improvements, updated user manual

May 20th 2020 – Version 20.2.59.1682

Fixed

Server

Probes

We fixed an issue with the "burst mode" for probe reconnects that we introduced with the last preview version 20.2.59.1579. If a probe disconnected and reconnected again during active burst mode, the probe did not show monitoring data until you manually triggered a scan.

Fixed

Sensors

MQTT sensors

The MQTT credentials settings on device, group, and probe level used by MQTT Round Trip BETA and MQTT Statistics BETA sensors are now also available on remote probes.

Improved

Languages

German

We updated the German language file.

May 7th 2020 – Version 20.2.59.1579

Blog article

By Sascha Neumeier • Jun 10, 2020

PRTG Network Monitor 20.2.59 enhances IoT monitoring capabilities

A quick look at the calendar tells me that it's June 10, 2020. 90% of my colleagues (including myself) continue to work remotely from our homes. This is also reflected in the release 20.2.59 of...
Read the complete blog post here

New

Sensors

DNS v2

The new DNS v2 BETA sensor monitors a DNS server, resolves domain name records, and compares the records to a defined filter. It shows the response time of the DNS server and if records were resolved, the number of records, as well as the number of records matching the filter. With the help of this monitoring data, you can check if resolving a domain works, if the number of certain records changes, and if a certain record exists for a domain.

In comparison to the already existing DNS sensor, the new DNS v2 sensor provides more features and works more reliable in certain configurations. For your convenience, the original DNS sensor will still work after the update to PRTG 20.2.59, as well as you can still add sensors of this type, but please note that we may deprecate the DNS sensor at some time in the future. Of course, we will inform you in time before the deprecation.

MQTT Statistics

The new MQTT Statistics BETA sensor monitors MQTT topics and shows related statistics of the broker, for example, the number of incoming messages from a subscribed topic and the received payload. With this new sensor type you can check if your IoT devices and the broker still send messages. We are looking forward to hearing your feedback about this new beta sensor! Please send your feedback to [email protected].

Changed

Sensors

MQTT Round Trip

This version comes with a completely rewritten MQTT Round Trip BETA sensor. The new version of this sensor type replaces the original MQTT Round Trip BETA sensor.

Any previously deployed MQTT Round Trip BETA sensors will immediately stop working upon updating to PRTG 20.2.59 or later because of the significant changes in the sensor implementation. You have to add the sensors anew after the update to continue your MQTT round trip monitoring. To keep historic data, you can pause existing instances of deprecated sensors.

Improved

WebGUI

Maps	We added new map objects for MQTT brokers. This enables you to create maps that visualize the status of your MQTT brokers on your dashboards so that you can identify the status right away. You find the new map objects in the map designer sections Default A and Default B.

Improved

Sensors

Amazon CloudWatch sensors	This version includes a minor security improvement for Amazon CloudWatch sensors.
AWS Cost	We added the setting sections "Scanning Interval", "Schedules, Dependencies, and Maintenance Window", "Access Rights", as well as "Channel Unit Configuration" to the AWS Cost BETA sensor. You can now add the AWS Cost BETA sensor to devices on remote probes and cluster probes as well, which also includes cluster support for this sensor. In previous versions, you could only add the sensor to your local probe.
Windows Updates Status (PowerShell)	We added an option to the Windows Updates Status (PowerShell) sensor settings that allows you to include the port number in the SPN (Service Principal Name) used for Kerberos authentication. Use Enable for the Include Port in SPN setting to apply the option. This option might help if your sensor monitors devices where an IIS service or similar is installed and the sensor did not work before. Because the new option is kind of experimental and we cannot say if it works in every case, we really would like to hear about your experience with it! Please send your feedback to [email protected].

Improved

Server

Active Directory	You can now define how PRTG performs Active Directory queries, either by using the domain name or by using specific domain controllers. If you use Active Directory integration, you can choose the desired Domain Access option in the Core & Probe settings of PRTG. You can configure up to two domain controllers, a Primary Domain Controller and optionally a Backup Domain Controller. We also fixed some minor issues that affected the PRTG Active Directory integration.
Geo Maps	We improved the validation of coordinates that you enter into the Location (for Geo Maps) field. PRTG now checks if the geocode (longitude and latitude) is in a valid range and shows an error message if not, as well as PRTG tries to automatically correct invalid numbers. The improved validation will help to avoid issues when displaying geo maps.
Probes	We increased the resilience of the PRTG core server towards reconnecting probes with buffered data. If probes lose the connection to the PRTG server, they keep performing their assigned monitoring requests and buffer the results. Upon re-establishing the connection, the probes send all buffered data to the server at once. This can lead to dropped data when the maximum raw data buffer capacity is reached, which results in numerous sensors in "unknown" status. With the improvements in this PRTG version that include an increased buffer size, a slowed down processing of incoming data packets if required, and breaks in sending buffered data, the monitoring of current values will become more reliable in such cases. We call the new mechanism that applies on probe reconnect "burst mode". If you delete a connected remote probe from the PRTG device tree, PRTG will now stop the PRTG probe service on the probe system and set the startup type to manual. This prevents the removed remote probe from sending unnecessary connection attempts to the PRTG server. We recommend that you additionally uninstall the remote probe on the remote probe system. Note: PRTG cannot automatically stop the services of disconnected or denied remote probes.
Search	We improved the stability of the PRTG search function and also fine-tuned the search results. For example, you will not receive a bunch of PRTG tickets anymore as search result when you search for more than one keyword.
Toplists	To improve performance and stability, PRTG now more efficiently handles data transmission to toplists and purging of toplists that are used by flow and packet sniffer sensors.

Fixed

Sensors

SNMP Custom Table	The SNMP Custom Table sensor correctly replaces OIDs in the sensor name with the value of the referenced column again.
SSH Meminfo	We fixed an issue with the SSH Meminfo sensor that occurred in the last PRTG version 20.2.58.1629 when target devices returned values in a certain notation. In this case, the sensor showed error PE094.
WMI Disk Health	The WMI Disk Health BETA sensor now supports blanks in the serial number of the monitored disk and continues monitoring this disk even after a PRTG server restart. In previous versions, PRTG removed the blanks upon restarting, so that the sensor was not able to identify the monitored disk anymore and showed an error message (PE016). We recommend that you update soon if you use this sensor type. In future PRTG versions, a seamless update of the sensor without having to add it anew might not be possible anymore because of the fix.

Fixed

Server

Installer	We hide the CLI window again that in the last version appeared during the Python installation step when installing or manually updating the PRTG server or a probe.
PRTG Administration Tool	We disabled the option to change the Path for probe data storage on the Probe Settings for Monitoring tab when you run the PRTG Administration Tool on the PRTG core server. Please use the option Local Storage of Data Files and Monitoring Database on the Core Server tab to change the path. In previous versions, having the option on both tabs available could be misleading and could result in unexpected behavior when changing the path on the probe settings tab.
User Accounts	You can change the settings of user accounts that you added via Add Multiple Users without restarting the PRTG server again. In previous versions, PRTG showed the error message The validation of the data you entered has failed. A user with this login name already exists. Login names have to be unique. in this case.

Improved

Various

All parts of PRTG

Various other minor fixes and improvements, updated German language file, updated user manual

Note

Sensors

Npcap

We added a registry key that allows you to individually prevent PRTG from installing Npcap on your PRTG probe machines. This might be necessary in certain scenarios to not interfere with other services. Please note that Packet Sniffer and Packet Sniffer (Custom) sensors need Npcap to monitor your traffic.

For details, see the Knowledge Base article How can I disable the installation of Npcap before updating or installing PRTG?

April 3rd 2020 – Version 20.2.58.1532

Blog article

By Sascha Neumeier • May 14, 2020

PRTG version 20.2.58 includes PRTG Enterprise Console remover

I'm a bit late in introducing you to the most interesting features of PRTG version 20.2.58. The release has been available for download in the stable channel since the end of April, and you...
Read the complete blog post here

Improved

Server

Active Directory

The PRTG active directory integration now supports LDAP over SSL (LDAPS). You can define to use SSL encryption as LDAP Transport Security in the Active Directory Integration section of your Core & Probes settings. Default is LDAP transport security without encryption.

Improved

Languages

Japanese	We completely revised the Japanese language version of PRTG. Thanks to significantly improved texts, the new Japanese version helps you to even better find your way in the PRTG web interface, makes your monitoring tasks easier, and you can enjoy your administrator life even more. If you speak Japanese, we highly recommend this update and trying out the new language file.
All languages	We also updated all other language files additionally to the completely revised Japanese version.

Fixed

Sensors

Business Process (Processus métier)	You can edit the channel definition settings of the Business Process (Processus métier) sensor again even when using the French language version of PRTG. In previous versions, a malformed link in the French language file made it impossible to add or change the channel definitions.
HTTP sensors	HTTP sensors properly support URLs that include a hash sign (#) again. In certain cases, when monitoring URLs that include the character sequence /#/, for example, HTTP sensors encoded the hash sign and showed error 404 (not found).
HTTP Full Web Page	The HTTP Full Web Page sensor supports URLs that include an equals sign (=) again. In previous versions, the sensor encoded the equals sign so that the sensor could not monitor the target URL and showed an error. We also increased the sensor message visibility to 255 characters and malformed results now show error PE132.
Python Script Advanced	You can install new packages in PRTG Python using pip or easy_install, for example, like normal again. In previous versions, you received an error message in such cases because the PRTG Python post-install script was not working when the base path included whitespaces, which is typically the case in PRTG Network Monitor installation paths. We also updated the Python distribution delivered with PRTG to version 3.7.7.
SNMP Fujitsu System Health v2	We added the missing lookup file for the Redundancy Mode channel of SNMP Fujitsu System Health v2 BETA sensors that monitor the power supply redundancy status (default sensor name: iRMC Power Supply Redundancy: Status). The sensor channel shows a warning status if there is no redundancy, and an up status if there is a PSU redundancy, dual AC redundancy, or triple AC redundancy.
SNMP Trap Receiver and Syslog Receiver	SNMP Trap Receiver and Syslog Receiver sensors now purge their messages after 180 days if you select this option in the Purge Messages After settings. In previous versions, both sensor types already purged the messages after 120 days even if you had selected 180 days.
SSH Meminfo	The SSH Meminfo sensor now queries MemAvailable instead of MemFree from the target device to monitor the channels Available Memory and Percent Available Memory. This approach reflects the actual RAM usage of Linux systems in a better way and is aligned with the values that the SNMP Linux Meminfo sensor monitors.
Custom advanced sensors	We fixed an issue with custom advanced sensors that sometimes showed wrong values in tables (differing by 1 from the correct values) while showing correct values in the data graph. The issue was caused by the Decimal Places channel setting (the custom option worked correctly) and affected sensor types that use XML input like EXE/Script Advanced, Python Script Advanced, SSH Script Advanced, HTTP Push Data Advanced, HTTP IoT Push Data Advanced, HTTP Data Advanced, and REST Custom.

Fixed

Server

Maps	You can now use JPEG files as Background Image for maps. In previous versions, maps only supported JPG, PNG, and GIF images for the background. Opening monitoring objects like groups and devices from the sunburst in public maps works again. In previous versions, you received the error message Map refresh failed in such cases.
Probes	Sensor requests will now be removed from the original probe when you move sensors (directly or via parent devices and groups) from one probe to another probe. In previous versions, the original probe kept on sending monitoring requests for the moved sensors until the requests were deleted by pausing and resuming the moved sensors or by a server restart. This resulted in unnecessary high CPU load on the probe systems.
Reports	Historic data reports for Sensor Factory sensors work more reliable now. Certain combinations of report interval and average interval resulted in empty reports in previous versions.
Passhash	The Generate new passhash function for PRTG user accounts on PRTG hosted by Paessler instances works again. In previous version, generating a new passhash resulted in an error and so was not possible.

Note

Enterprise Console

Housekeeping

We deliver the PRTG Enterprise Console Remover with this PRTG version. With this tool, you can simply uninstall the deprecated Enterprise Console from your server. You find it in your PRTG Network Monitor program folder, as well as there is a shortcut in the Windows Start Menu.

Note

Sensors

MQTT Round Trip

The upcoming PRTG version 20.2.59 will include a new, significantly changed MQTT Round Trip sensor. We already inform you now about the change because any previously deployed MQTT Round Trip BETA sensors will immediately stop working upon updating to PRTG 20.2.59 or later and you will have to add them anew.

Improved

Various

All parts of PRTG

Various other minor fixes and improvements, updated user manual

Changed

Tree Version

Tree Version Update

The configuration file of this version is not downwards compatible with previous PRTG versions.

Note

Known Issues

SSH Meminfo sensor

In certain monitoring scenarios, the SSH Meminfo sensor shows the error message The device you want to monitor is not compatible. The sensor cannot parse the reply data. (code: PE094) after updating to PRTG 20.2.58.1629. This is because the sensor does not support certain notations of the returned values that the sensor now queries.

As workaround, you can use the SNMP Linux Meminfo sensor that is not affected by the issue and basically monitors the same values.

Status: Resolved with PRTG 20.2.59.1689.

March 17th 2020 – Version 20.1.57.1740

Fixed

Security

Server

This version includes a security update for your PRTG core server. (CVE-2020-10374)

March 6th 2020 – Version 20.1.57.1677

Important

Security

Server

This version includes an important security update for your PRTG core server. We recommend that you update as soon as possible. Please find more details in the email we sent to the email address provided in your license information. Note: You will only receive the email if your PRTG server is affected.

The issue was found and reported during a penetration test done by a security researcher. Our thanks go to Nicolas Verdier from TEHTRIS (https://tehtris.com/). (CVE-2020-10374)

Improved

Sensors

LDAP

The LDAP sensor now supports LDAP over SSL (LDAPS). If you want to monitor your secured Active Directory server, choose the option Use LDAP over SSL for the sensor setting Connection Security in section LDAP Specific. LDAP without encryption is default. You can also define a custom port for the connection to the LDAP server or use the default port.

VMware Host Hardware Status (SOAP)

The VMware Host Hardware Status (SOAP) sensor now categorizes unknown states reported by the VMware host server as entity with its own sensor channel. You also have the sensor settings option to ignore unknown states so that they will not change the sensor status to warning nor appear in the sensor message.

The setting Known Warnings is only purposed for warning states of the host server now. Because of this, you may encounter VMware Host Hardware Status (SOAP) sensors that show a new warning status after the PRTG update if the sensors receive unknown states. In this case, please change the Ignore Unknown States setting from the default option to Do not show unknown states if you do not want to have a warning status for unknowns.

Improved

Server

Notifications

We added a few more placeholders for notifications. You can use a new placeholder that only resolves to the current sensor status and additional placeholders for elapsed times since status updates.

%laststatus simply resolves to the current sensor status to ease, for example, automation tasks in comparison to the more complex %status placeholder
%elapsed_lastcheck resolves to the elapsed time since the last scan of a sensor as shown in its general information section and is a simpler version of %lastcheck because it omits the timestamp
%elapsed_lastdown resolves to the elapsed time since the last down status of a sensor and is a simpler version of %lastdown because it omits the timestamp
%elapsed_lastup resolves to the elapsed time since the last up status of a sensor and is a simpler version of %lastup because it omits the timestamp

Improved

WebGUI

Reports	The column in the list of reports that shows the number of sensors included in the last run of a report now also updates if you run an HTML report. In previous version, only PDF reports were considered. We also renamed the column to # Sensors in last run to make it clearer what the numbers actually show.
Security	We updated the bootstrap.js plugin that we ship with PRTG because the previously used version 3.2.0 had an XSS vulnerability. (CVE-2019-8331)

Fixed

Sensors

NetApp Volume	We fixed an issue with the snapshot time calculation of the NetApp Volume BETA sensor. In certain cases, values of sensor channels like, for example, Latest snapshot and Oldest snapshot did not match the times displayed in the NetApp interface because the sensor mixed up the handling of UTC and local time.
Sensor channels	The sensor channel option Hide from tables immediately takes effect again. In previous versions, channels with this option enabled only disappeared from tables after a PRTG server restart. We fixed a display issue of channel gauges that occurred when switching the alerting mode from limit-based to lookup-based and back.
WMI sensors	WMI sensors now show an according error message (PE069) if they do not find any items to monitor on the target device during the meta-scan on sensor creation.

Fixed

Server

API	When you use an API call that returns PRTG objects sorted by a numerical property like objid, the returned objects are now numerically sorted. In previous versions, the objects were alphabetically sorted. For example, as of the current PRTG version, IDs (objid) are sorted like [2419, 2470, 10359, 10360], where in previous versions the sorting was [10359, 10360,2419, 2470] in such a case.
Cluster	PRTG now shows a correct error message if you provided a wrong cluster access key and try to log in into the failover node so that you can easier help yourself.
Licensing	We fixed an issue with the PRTG PLUS license where, in certain cases, PRTG instances erroneously showed the message your license will expire in [x] days so that you had to manually reactivate the license each time this case occurred.
Maps	You can add custom background images to maps again. In the previous PRTG version 20.1.56, PRTG showed an internal server error when you selected a file as Custom Image to use as Background Image and tried to save the map settings.
Memory Usage	The PRTG server may consume less memory over time in certain monitoring scenarios. We also improved the memory usage of maps that include many historic graph images.
Reports	The default Security Context of a report is again the PRTG user account that creates the report.
Timezones	The default timezone for newly created user accounts and reports is the system timezone of the PRTG server again.

Improved

Various

All parts of PRTG

Various other minor fixes and improvements, updated user manual including a style update

Note

Sensors

Npcap	We updated the Npcap library that Packet Sniffer and Packet Sniffer (Custom) sensors use to monitor your traffic to version 0.9987.
Beta sensors	The following sensor types are not in beta status anymore and are now fully supported. Dell PowerVault MDi Physical Disk DICOM Bandwidth DICOM C-ECHO DICOM Query/Retrieve HL7 HTTP IoT Push Data Advanced HTTP Push Data SNMP Buffalo TS System Health SNMP Custom String Lookup Windows Physical Disk I/O WMI Battery WMI Logical Disk I/O

Note

Auto-Update

Windows Server 2008 R2

If your PRTG server or remote probes run on Windows Server 2008 R2, the PRTG auto-update may fail on these systems because of the Npcap update. The reason is a Windows Security dialog window that appears when trying to install Npcap and that interrupts the PRTG update process. We have also seen cases where the PRTG auto-update succeeded but Packet Sniffer sensors changed to down status (or unknown) with the message that the winpcap.dll is missing.

The dialog window comes because of a renewed code signing certificate of the Nmap project (Insecure.Com LLC) and has to be confirmed before PRTG can proceed with the installation.

Please manually run the latest PRTG installer on the PRTG server and the remote probe installer on remote probe systems or manually install Npcap if you use Windows Server 2008 R2 and confirm the dialog window. See also the Knowledge Base article PRTG update process is unsuccessful while trying to install Npcap. What can I do?

Note

Known Issues

API	Filtering by object ID (filter_obj) does not work in the current PRTG version 20.1.57.1745. API calls that use filter_obj return an empty response file (XML, JSON, CSV). Filtering currently only produces output if you change the parameter of filter_objid by left padding with zeros to length 10 (for example, 0000001002 for object ID 1002). Status: Resolved with PRTG 20.1.57.1786.
Auto-Discovery	The PRTG auto-discovery does not add WMI sensors in the current PRTG version 20.1.57.1745. Manually adding WMI sensors still works. Status: Resolved with PRTG 20.1.57.1786.

February 21st 2020 – Version 20.1.56.1551

Improved

Various

Languages	Updated German language file
Security	Minor security improvement in the context of PRTG user accounts

February 12th 2020 – Version 20.1.56.1514

Fixed

PRTG Desktop

Access Rights

Access rights for the device tree in PRTG Desktop work again so that you can view information about objects like devices, groups, and probes if your user account has sufficient permissions. This did not work if you connected PRTG Desktop to the previous PRTG preview version 20.1.56.1498 due to a change to the access rights system.

Fixed

Sensors

Logging

Writing individual log files for the sensor types SNMP Fujitsu System Health v2, SNMP Nutanix Cluster Health, and SNMP Nutanix Hypervisor works again when you enable the debug option Write sensor result to disk. This did not work in the previous PRTG preview version 20.1.56.1498.

February 6th 2020 – Version 20.1.56.1498

Blog article

By Sascha Neumeier • Mar 25, 2020

PRTG Release 20.1.56 comes with an AWS Cost Sensor (and other cool features)

Whew, what's the best way to start today? The stable release 20.1.56 of PRTG Network Monitor was released almost a month ago (which means that the next version, 20.1.57, will be online soon)....
Read the complete blog post here

New

Sensors

AWS Cost

The new AWS Cost BETA sensor monitors the costs of your Amazon Web Services (AWS) account. It shows the total costs as well as a forecast of the total costs of your AWS account. You can optionally monitor additional types for costs and forecasts, like the cost types amortized and unblended costs, as well as the forecast types blended and net amortized costs, for example.

The AWS Cost sensor will help you to keep an eye on your company AWS account's spending, as well on your single purpose AWS account's spending. If you set up channel limits, it can individually notify you if the costs become too high.

Improved

WebGUI

Checkboxes

We improved the appearance of checkboxes. You now find a standard checkbox icon everywhere in the PRTG web interface. In previous versions, PRTG used an individual icon in some sections, for example, in sensor lists, which made it unnecessarily difficult to immediately recognize its meaning.

Sensors

The performance impact bar that we added to sensor tabs in the last PRTG version 20.1.55 is now also available in several sensor lists. You can also directly open sensor lists sorted by performance impact from the main menu bar via Sensors | By Performance Impact and from the PRTG Status page, section Sensors by Performance Impact.

The lists provide you a quick overview of the performance impact of all running sensors without having to individually look at each sensor, as well as the possibility to perform multi-edit on sensors with a certain impact, for example, to adjust scanning intervals and tweak the performance of PRTG.

Improved

Server

Active Directory	We improved the performance of Active Directory user connections to the PRTG server. In rare cases, nearly simultaneous logins and usage with Active Directory based user accounts from PRTG Desktop and PRTG mobile apps were quite slow when the last connections were longer ago.
Cluster	Sensors in status Down (Acknowledged) now also show the according sensor log message on cluster failover nodes.
Notifications	You can now use placeholders for tags in notifications. With %objecttags you get the tags of the sensor that triggers the notification, %parenttags resolves to all inherited tags, and %tags is for the sensor's tags plus all inherited tags. Using tags in your notifications enables you, for example, to automatically route notifications to the appropriate response teams based on included tags. See also the Knowledge Base article What placeholders can I use with PRTG?
Password Recovery	PRTG no longer sends redundant emails during the forgot password process. With the improvements in this context in previous versions, you already get the information from the removed emails in the PRTG web interface.
Security	If you change the password of your PRTG user account, the content of the fields Old Password, New Password, and Retype Password is now always masked when the change is written to a log file. If you entered a wrong old password in previous versions so that PRTG could not save the password change, the according error message was logged with the entered old, new, and retyped passwords in clear text on the PRTG server.
Session Handling	We implemented further improvements for the handling of user sessions.

Fixed

Sensors

Cisco IP SLA	The Cisco IP SLA sensor now even finds interfaces if the meta-scan (querying available interfaces on sensor creation) exceeds 9,000 SNMP requests so that you are able to create all possible instances of the sensor on a large target system. You can also individually define the interface range for the meta-scan of the Cisco IP SLA sensor in the SNMP Compatibility Options of the parent device with the options Start Interface Index and End Interface Index as of this version.
NetApp SnapMirror	We fixed an issue with the NetApp SnapMirror BETA sensor that you could not create in certain scenarios. PRTG expected a return field that did not exist in such cases, resulting in error messages like An item with the same key has already been added. or Error: Object reference not set to an instance of an object when trying to add the sensor.
SIP Options Ping	We fixed an issue with the SIP Options Ping sensor where in certain cases the authentication failed because of an incorrect realm sent by PRTG.
SNMP Traffic	The default primary channel of SNMP Traffic sensors is always the Total channel again. In previous version, SNMP Traffic sensors that you newly added to PRTG with at least one of the Additional Channels came with Traffic In as primary channel.
VMware Datastore (SOAP)	The auto-discovery can create VMware Datastore (SOAP) sensors again. This did not work with custom device templates in previous versions.

Fixed

Server

Maps	We fixed an issue with public maps that, in rare cases, caused very high CPU load on the server when viewing a public map with changed security context.
Object Names	Names of monitoring objects like, for example, sensors, devices, groups, are now properly displayed on the object's details page even if they contain the character sequence left square bracket and a ([a). In previous versions, the name was cut off at this position.
Sensor Values	We fixed a rounding issue were numbers close to 0 like 0.01 or -0.01 were mistakenly rounded to 0 in sensor messages instead of correctly showing the decimal places.

Fixed

WebGUI

Cluster	Switching the cluster node in map rotation works again.
Graphs	The values you enter into Vertical Axis Maximum and Vertical Axis Minimum in section Vertical Axis Scaling of channel settings now even take effect in graphs if you set the Display in percent of maximum option in the channel setting's Data section.
Libraries	Clicking summarized sensor status elements in library nodes opens a list that only contains sensors from this library node in the particular status again. In previous versions, the filter did not properly work and just showed all sensors of the PRTG instance in this status. Pagination in the Filter by Type section of library node settings works properly again. Directly clicking page numbers did not work in previous versions, only clicking a small area above a number helped.
Lookups	We fixed some minor display issues of bitmask lookups on sensor pages.

Changed

Sensors

Logging

PRTG now stores sensor logs in the \Logs\sensors subfolder of your PRTG program data path when the debug option write result to disk is enabled in the sensor settings. By default, this is C:\ProgramData\Paessler\PRTG Network Monitor\Logs\Sensors. In previous versions, sensor logs were written to the folder \Logs (sensors).

Improved

Various

All Parts of PRTG

Various other minor fixes and improvements, updated user manual, updated German language file

Note

Sensors

MQTT Round Trip

We plan major changes to the MQTT Round Trip BETA sensor in an upcoming PRTG version. Once released, the changes will mean that any previously deployed sensors of this type will stop working and you will have to create them anew. We will inform you again as soon as the changes are included in a new PRTG version.

Note

Known Issue

Maps: Background Image

In the current version, you cannot add custom background images to maps. When you select a file as Custom Image to use as Background Image for a map and want to save the setting changes, PRTG will show an internal server error and saving is not possible.

Status: Resolved with PRTG version 20.1.57.1745.

January 14th 2020 – Version 20.1.55.1749

Fixed

Sensors

SNMP Fujitsu System Health v2

We fixed an issue with access violations in the sensor message for SNMP Fujitsu System Health v2 Sensor that occurred when updating to PRTG 19.4.55.1720. Only already existing sensors were affec

Release notes for the "preview" release channel

September 2nd 2024 - Version 24.3.100.1279

Improved

Sensors

EXE/Script sensors

HTTP v2

Fixed

Server

PRTG probes

API keys

Fixed

Sensors

WMI Event Log sensor

Fixed

Multi-Platform Probe

Auto-discovery group

Fixed

PRTG App for Desktop

System information

Note

Installer

Security

Lab

Sensors

REST Custom v2 sensor

SSH INodes Free v2 sensor

Lab

PRTG API v2

API

Deprecation of endpoints

Swagger UI

Lab

New UI

Color Mode

Maps

Settings

System Setup

Improved

Various

All parts of PRTG

August 12th 2024 - Version 24.3.99.1463

Improved

Server

Update to OpenSSL 3.0.13

Changed

Server

Notifications

Improved

Sensors

Cisco Meraki Network Health sensor

Probe stability

FortiGate VPN Overview sensor

Fixed

Sensors

DNS v2 sensor

MQTT Round Trip sensor

Fixed

WebGUI

Maps

Note

Installer

Security

Improved

Multi-Platform Probe

PRTG Setup

PRTG Status

Lab

Sensors

Cisco WLC Access Point Overview sensor

SSH INodes Free v2 sensor

SNMP Custom v2 sensor

Lab

New UI

Add group

Edit channel settings

Login behavior

Monitoring

Mobile view

Navigation

PRTG Setup

Release notes
for the "preview" release channel