We have a Windows Server 2012 RDP server that has been in production for several months. Today many users are having difficulty connecting, getting an error of, "The remote session was disconnected because the Remote Desktop client access license stored on this computer has been modified."
If I delete HKLM\Software\Microsoft\MSLicensing, then the clients can connect once or twice, but then receive the error again.
I have not found anything of note on the server other than the certificate was expired. I generated a new self-signed cert and that warning went away. Any other thoughts?