There are a lot of Azure
errors out there. Way too many, right?

Quick fix

You receive the following error message, when you use Release Management 2013 Update 3 to create a virtual Azure machine with the new vNext:  

The remote server returned an error (500) Internal Server Error

Hint:

Follow these steps for a workaround:

1. Under Configure Apps search for the Server > Server tab and delete it.
   (Server name is in this format: "<Environment Name>::<Azure VM name>")
2. Click Link Azure Servers to try to add the Azure VM from the Environments tab again.

Best solution:

https://support.microsoft.com/en-za/help/2989108/500-internal-server-error-occurs-when-you-link-an-azure-vm-in-create-n

More solutions:

https://stackoverflow.com/questions/6324463/how-to-debug-azure-500-internal-server-error

https://github.com/aspnet/Tooling/issues/422

Quick fix

It is simple deploying apps for the Azure App Service, but sometimes you end up with a sad (and rather cryptic) 502, 503 or another 5xx error when starting the app, when things don't go as planned.
These problems are tricky to debug because the app has not started yet and therefore cannot display a useful error message itself. The server will then simply display a generic and hard to understand error page. 

Best solution:

https://blog.mzikmund.com/2019/01/using-diagnostic-logging-in-azure-app-service/

More information:

https://stackoverflow.com/questions/35702341/asp-net-web-application-in-azure-how-to-log-errors

https://docs.microsoft.com/en-us/azure/azure-monitor/app/api-custom-events-metrics

https://docs.microsoft.com/en-us/azure/azure-monitor/app/asp-net-exceptions

Quick fix

The connection was prevented due to a policy configured on your RAS/VPN server. (Error 812) This error occurs if the RADIUS server you used to authenticate the VPN client has incorrect settings or the Azure Gateway cannot reach the Radius server.

Hint:

Make sure that the RADIUS server is configured correctly. For more information, see Integrating RADIUS Authentication with the Azure Multi-Factor Authentication Server.

Best solution:

https://docs.microsoft.com/de-de/azure/vpn-gateway/vpn-gateway-troubleshoot-vpn-point-to-site-connection-problems 

https://docs.microsoft.com/en-us/azure/active-directory/authentication/howto-mfaserver-dir-radius

Quick Fix

This article provides information to resolve some common Azure deployment errors.

Best solution:

https://docs.microsoft.com/en-us/azure/azure-resource-manager/resource-manager-common-deployment-errors