Error :-
Error Occurred while Connect to Remote Desktop :- The remote session was disconnected because there are no Remote Desktop License Servers available to provide a license. Please contact the server administrator.
Solution :-
Open following registry key
HKLM\System\CurrentControlSet\Control\Terminal Server\RCM
If the ‘GracePeriod’ key exists you will need to delete it. You will have to take ownership by right clik on RCM Registry and Click property => security and change owner to your current system user , Now you can delete it.
Restart the remote desktop services service and that should do it, no reboot is necessary. Use at your own risk.