Last month I replaced our old windows server with Windows 2012 Terminal Server.
After the install, I installed Microsoft Remote Desktop 2.1.1 on all of my Apple Mac OSX 10.8 iMacs.
All was working perfectly.
After what I think is 45 days all my Apple Macs suffered the same problem when trying to establish a RDP connection.
See attached Image:
"You were disconnected from the windows-based computer because of problems during the licensing protocol."
If I try connecting from a spare PC using Remote Desktop and the same user credentials I am able to log in fine.
This means the user has permission to log on. The Terminal Server is refusing connections from all my Apple Macs.
If this is really a Licensing Protocol issue, I wonder if the problem is caused by temporary Device CALS expiring? I am fully licensed with plenty of CAL's, It should be applying device cal's to Apple Macs.
I need help diagnosing the problems here. Is there a log file I can read on the Terminal Server that tells me exactly why it refuses connections from my Apple Macs?
Is there a way to flush out the device cals or check to see if they are allocated properly to my Apple Macs?