Windows Server 2022 Remote Desktop - Black Screen

Question

We've recently installed a Server 2022 as a Remote Desktop Server.
We have a load of Mac users, some laptops, some desktops who connect using the Microsoft Remote Desktop app from the app store.
We are finding that when a user gets disconnected, whether its VPN drops out, or the Mac goes to sleep and closes the RDP connection, when that user tries to log back into their remote desktop session, they get a black screen.
If I try and connect to that session on the server, the black screen appears for me too. I also notice the network information bar shows 1 or 2 bars out of the 4.
To get the user back signed in, I have to manually close the Windows Logon User Interface service (I think thats what its called)
Some of these users are connecting on the local network over wireless and some are connected with an ethernet cable.
Really odd. Has anyone else seen this before?
Many thanks

Answer 1

Unfortunately, end users have started reporting the black screen again!

I had thought moving the licensing role to another server had fixed it, but that doesn't appear to be the case.

What is odd....Although licencing is clearly on a different server and the CALs have been moved successfully, the licensing role server doesn't appear to be issuing licenses to those who login to the remote desktop server.

It has only licenses 1 user (an admin) which I used to test it...

Any thoughts?

Many thanks

SM