Situation: When attempting to access Remote Desktop server, you may receive this message: “No Remote Desktop License Servers”
Troubleshooting 1: Check the RD Licensing Manager Status
In Server manager, click on Tools>Remote Desktop Services>Remote Desktop Licensing Manager
It should have a green check.
If it shows yellow explanation,
right click on the RD server and run Review Configuration, and make sure install Licenses. Also you can go to Advanced to Reactive Server.
Troubleshooting 2: Run Remote Desktop Licensing Diagnoser to check any errors.
In Server manager, click on Tools>Remote Desktop Services>Remote Desktop Licensing Diagnoser.
If you receive this message: License server is not available, go back to resolution 1 to re-install the RD license or reactive license.
If you receive this message: remote desktop licensing mode is not configured, try this fix. Please refer to this post: