Complete Windows Monitoring

Keep your Windows servers, workstations, and critical services under control. Spot problems before your users do.

How Do You Monitor Windows Servers and Services Without Agents on Every Machine?

Windows infrastructure monitoring means keeping track of a lot of moving parts: servers, workstations, services, event logs, application health, and distributed sites. The challenge is doing that without deploying and maintaining agents on every machine, and without manually correlating data across separate tools when something goes wrong.

Paessler PRTG connects to Windows systems via WMI and performance counter APIs, giving you real-time visibility into CPU load, memory, disk I/O, service status, event logs, and application health across your entire environment with it’s out-of-the-box network discovery. Custom PowerShell scripts extend coverage to whatever built-in sensors don't cover out of the box.

Supported Windows environments and technologies: Windows Server (2016, 2019, 2022, 2025), Windows 10, Windows 11, Active Directory, Hyper-V, IIS, SQL Server, Microsoft Exchange, file servers, DNS, DHCP monitoring, Remote Desktop Services, Azure hybrid environments, WMI, performance counters, event logs, Windows services, Windows Update status

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PRTG is compatible with all major vendors, products, and systems

Total Visibility into Your Windows Environment

Catch CPU, Memory, and Disk Bottlenecks Before Performance Issues Surface

CPU spikes and memory leaks don't announce themselves. Performance degrades gradually, and by the time help desk tickets start arriving, the damage is already done. PRTG tracks CPU load, memory usage, disk I/O, and network traffic in real time using performance counters and WMI sensors. You set thresholds once. From that point on, PRTG watches continuously and alerts you the moment something starts trending the wrong way.

Real-time performance monitoring across all Windows servers and workstations using lightweight performance counter sensors
Customizable thresholds trigger alerts via email, SMS, or push notification when metrics cross warning levels
Trend dashboards and capacity planning reports forecast when you'll need additional resources
Correlation visualization shows how CPU monitoring data connects disk I/O to network saturation

Stop Windows Service Failures from Breaking Critical Business Applications

A stopped Windows service can take down more than you'd expect. SQL Server stops, and an entire application stack goes offline. IIS application pools crash, Active Directory replication lags. These failures cascade quickly, and downtime from them adds up fast. Getting services back manually takes time you often don't have. PRTG's WMI Service sensor keeps continuous watch on service status, startup type, and dependencies across all your servers. The moment a critical service stops unexpectedly, you get notified. Not after someone complains. Immediately.

Windows service sensors monitor status and dependencies across all servers with instant failure alerts
Configure object dependencies to pause monitoring on dependent systems when a parent device is down, preventing false alarms and alert storms
Notification actions can trigger PowerShell scripts or executables when alerts fire, enabling automated responses like service restarts
Uptime SLA reporting tracks service availability over time to support business continuity planning

Filter Event Log Noise and Surface Critical Errors

Windows event logs are relentless. Thousands of entries every day, most of them irrelevant. The real question is whether critical errors are actually getting noticed or just buried in the noise. Most teams either ignore logs entirely or spend hours digging through them reactively after something breaks. PRTG's Event Log sensor monitors System, Application, and Security logs with precise filters. Specific event IDs, severity levels, event sources. You define what matters, and PRTG alerts you when it happens. Failed backups, security incidents, service crashes. Nothing else gets through.

Event log sensors track System, Application, Security, and custom logs with precise filtering
Automated alerts notify you when critical events appear (failed logins, service crashes, security warnings)
Audit trail retention supports compliance reporting (SOC 2, ISO 27001, HIPAA) and security investigations
Cross-system correlation links event log alerts directly to related performance metrics for faster troubleshooting

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PRODUCT OVERVIEW

Gain Unified Visibility Across Distributed Windows Infrastructure and Hybrid Environments

Branch offices and Azure environments tend to become infrastructure monitoring blind spots. Not because anyone planned it that way, but because separate monitoring tools end up covering separate locations, and correlating data manually across them isn't realistic at scale. PRTG's remote probe architecture handles this directly. Probes run locally at each site, handle monitoring tasks there, and report back to the central server via encrypted connections. On-premises servers, remote sites, and Azure-hosted Windows VMs. One platform, one set of dashboards, full observability.

Remote probes monitor branch offices locally and report to central PRTG server via encrypted connections
Distributed architecture minimizes WAN traffic by processing monitoring tasks locally at each site
Azure integration brings cloud-hosted Windows VMs into unified dashboards alongside on-premises infrastructure
Multi-site topology maps visualize dependencies across locations and show how regional failures impact operations

Monitor Windows Applications and Business-Critical Services That Drive Your Operations

A server can look perfectly healthy and still be causing problems. IIS application pools crash while operating system metrics look fine. Active Directory replication lags, authentication slows, users start complaining about login times. SQL Server query performance degrades under load. PRTG’s application monitoring goes beyond the OS layer. IIS, SQL Server, Hyper-V, Active Directory. You get visibility into whether the applications your business depends on are actually functioning, not just whether the underlying server is up.

Web server monitoring via IIS sensors tracks application pool state and worker process health
SQL Server sensors monitor database availability, connections, transaction logs, and memory metrics
Hyper-V sensors measure VM resource consumption, host performance, and cluster health
Active Directory monitoring tracks replication status, LDAP response times, and authentication health
Custom PowerShell sensors extend monitoring to proprietary applications and business-specific workflows

How PRTG Monitors Windows Environments

PRTG uses several monitoring technologies depending on what you're tracking and how your environment is structured. No agents required on every device. Here's a breakdown of how it actually works.

Performance Counter Monitoring

Performance counters are PRTG's primary method for Windows monitoring and Windows processes, and for good reason. They're lightweight, efficient, and pull real-time data directly from the OS with minimal overhead. CPU usage, memory consumption, disk I/O, network traffic, application-specific metrics. All of it available with granular precision. PRTG sensors default to performance counters and automatically fall back to WMI when counters aren't available. That hybrid behavior means broad compatibility without sacrificing efficiency. For most Windows server performance and workstation monitoring scenarios, performance counters are the right starting point.

WMI Monitoring

WMI covers the scenarios that performance counters can't. Services, processes, event logs, logical disks, hardware sensors. Nearly any Windows component is accessible through WMI, which makes it extremely flexible for monitoring service status, running custom queries, or checking hardware health. The trade-off is overhead. WMI is more resource-intensive than performance counters, and PRTG recommends keeping WMI sensor counts below roughly 200 per probe. In larger environments, distribute the load across multiple remote probes.

Event Log Monitoring

PRTG's WMI Event Log sensor queries Windows Event Logs continuously across System, Application, Security, and custom channels. Filters apply based on event ID, severity, source, or keyword. You decide what triggers an alert. A practical example: configure PRTG to notify when Event ID 1074 (unexpected shutdown) appears, or when failed login attempts exceed a defined threshold. Historical event log data is retained per your configured retention policies, which makes post-incident analysis and compliance reporting significantly less painful.

PowerShell Script Sensors

Built-in sensors don't cover everything. For scenarios outside their scope, PRTG supports PowerShell Script sensors and EXE/Script sensors. Scripts run on the PRTG probe, retrieve data from target systems, and return structured results in XML or JSON format. You can use .NET libraries, Windows APIs, and PowerShell modules like Active Directory, Exchange for email monitoring, or VMware PowerCLI. Anything accessible through PowerShell is effectively monitorable. This makes custom script sensors the practical choice for proprietary applications and business-specific health checks that don't fit standard sensor templates.

Remote Probe Monitoring

Remote probes are how PRTG handles branch offices, DMZs, and sites without direct network connectivity. Each probe is a lightweight Windows service that runs locally, handles WMI queries, reads performance counters, and runs PowerShell scripts on-site. Results go back to the core server over an encrypted, outbound-only connection. WAN traffic stays minimal, and systems that aren't directly accessible from headquarters are still covered. One limitation worth noting: certain sensors, like Hyper-V Host sensors and some Microsoft Exchange PowerShell sensors, won't run on hosted probes. Those require a local probe or a full PRTG installation at the site.

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PRTG vs. Manual Windows Monitoring

FEATURE	Manual Manual	PRTG PRTG
Monitor Windows Server CPU, memory, and disk performance	Manual Log into each server individually. Open Performance Monitor or Task Manager. Check current utilization manually. Export to spreadsheets. Repeat for every server. Correlate data across systems by hand.	PRTG Automated performance counter sensors track CPU, memory, disk I/O, and network metrics across all servers. Server monitoring software with centralized dashboards that provide real-time visualization, historical trending, and threshold-based alerting.
Track Windows service status across your IT infrastructure	Manual RDP into each server. Open Services console (services.msc). Check critical services manually. Note failures. Maintain a spreadsheet to track state over time.	PRTG WMI Service sensors monitor service status, startup type, and dependencies across all servers automatically. Instant alerts when critical services stop. Dependency mapping shows downstream impact.
Monitor Windows Event Logs for critical errors and security events	Manual Open Event Viewer on each server. Filter through thousands of entries. Search manually for specific event IDs or error patterns. Export relevant events. Correlate across servers.	PRTG Event Log sensors continuously monitor System, Application, and Security logs with customizable filters. Alert on critical events automatically. Centralized visibility reduces troubleshooting time significantly.
Check Windows Update status and patch compliance	Manual Log into each server and workstation. Open Windows Update. Check pending updates and last installation date. Document status manually. Repeat monthly.	PRTG Windows Update sensors automatically track patch status, pending updates, and last successful installation. Compliance reports generated automatically. Alerts on missing critical patches.
Monitor distributed Windows infrastructure across branch offices and cloud	Manual Maintain separate monitoring solutions per location. VPN into branch offices to check servers. Log into Azure Portal separately for cloud VMs. Correlate data across locations manually.	PRTG Centralized control covers on-premises servers, branch office systems, and Azure VMs from one platform. Encrypted remote probe connections eliminate VPN dependency. Cross-site topology maps visualize enterprise-wide dependencies.

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We have found these sophisticated levels of monitoring to be highly effective, improving the end user’s experience of the systems and applications in use, giving us the opportunity to provide a proactive resolution rather than having the end user raise issues.

Saif Akil, Head of Service Management

Acurus

“Before PRTG, applications and hardware all gave messages, but all separately, so we had to search through hundreds of e-mails to find the problem. It was always only afterwards that we saw that something was going on within the infrastructure. To mitigate the issue, we also considered other software. PRTG stood out because of its user-friendliness, flexibility and minimal consultancy investment.”

Wim Vandenberghe, ICT Manager

Soenen Golfkarton

PRTG gives a birds-eye view of your network to troubleshoot problems or look at systems in their entirety that other solutions cannot – and I have looked at all of them.

Colin Metzler, Cybersecurity Analyst

Dayton Children’s Hospital

Paessler PRTG Network Monitor licenses & pricing

Choose the PRTG Network Monitor subscription that's best for you.

License Name	Price	License Details	Get started	Pricing Details
PRTG 500	^$200	per month paid annually	Buy now Buy now	Enough to monitor multiple aspects of 50 devices
PRTG 1000	^$358	per month paid annually	Buy now Buy now	Enough to monitor multiple aspects of 100 devices
PRTG 2500	^$742	per month paid annually	Buy now Buy now	Enough to monitor multiple aspects of 250 devices
PRTG 5000	^$1,300	per month paid annually	Buy now Buy now	Enough to monitor multiple aspects of 500 devices
PRTG 10000	^$1,642	per month paid annually	Buy now Buy now	Enough to monitor multiple aspects of 1000 devices

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Windows Monitoring: Frequently Asked Questions

What versions of Windows does PRTG support for monitoring?

PRTG covers Windows 10 and 11 on the workstation side, and Windows Server from 2008 R2 through 2022. Most sensors support 2008 R2 and later, though some functionality, like specific Hyper-V sensors or certain PowerShell-based sensors, requires newer server versions. The PRTG core server and probes themselves need Windows Server 2016 or later. If you're working with older or unusual configurations, check the individual sensor documentation in the PRTG manual. Compatibility specifics vary by sensor.

How many Windows systems can PRTG monitor, and how is licensing structured?

PRTG licensing is sensor-based, not device-based. That distinction matters. A typical Windows server uses somewhere between 10 and 30 sensors depending on what you're tracking: CPU, memory, disk, network, services, event logs, applications. License tiers run from 100 sensors up through 500, 1,000, 2,500, 5,000, and unlimited XL options. There's also a free version capped at 100 sensors, which works well for testing or smaller environments.

Does PRTG require agents installed on every Windows system?

No. PRTG uses agentless monitoring via WMI, Performance Counters, SNMP, and PowerShell. What you do need: WMI and Remote Registry services enabled on target systems, plus appropriate Windows credentials configured in PRTG. Domain credentials are the cleaner option for larger environments. No per-device software to deploy, patch, or maintain.

Can PRTG monitor Windows services, and will it alert me immediately if a critical service stops?

Yes, and the alert is immediate. PRTG's WMI Service sensor monitors service status, startup type, and dependencies in real time. You define which services matter: SQL Server, IIS, Active Directory, custom application services. The moment something stops unexpectedly or changes state, notifications go out via email, SMS, push notification, or your ITSM system. Dependency tracking shows which downstream applications are affected, so you're not left guessing about the scope of impact.

How does PRTG monitor Windows systems in hybrid environments with on-premises servers and Azure cloud VMs?

On-premises systems use WMI, Performance Counters, and PowerShell sensors. For Azure-hosted Windows VMs, you have two options. Azure API sensors track cloud-level metrics like VM status and resource consumption. Alternatively, if network connectivity allows via VPN, ExpressRoute, or public IP with appropriate firewall rules, you can treat the Azure VM as a standard Windows system and monitor it directly with WMI and Performance Counters. Either way, both environments show up in the same PRTG dashboards with the same alerting and reporting.

What's the difference between WMI sensors and Performance Counter sensors, and which should I use?

Performance Counters are faster and more efficient. Use them for CPU, memory, disk I/O, network traffic, and application-level metrics like IIS and SQL Server. Low overhead, high granularity, real-time data. WMI covers the scenarios Performance Counters can't handle: Windows services, event logs, hardware details, custom queries. The trade-off is overhead. In larger environments, PRTG recommends keeping WMI sensor counts below roughly 200 per probe and distributing load across multiple probes. PRTG sensors default to Performance Counters and fall back to WMI automatically when needed, so in many cases the choice is made for you.