How to Reset Terminal license on Windows 2008, 2008 R2 and 2012
The RD Licensing grace period has expired and the service has not registered with a license server with installed licenses. A RD Licensing server is required for continuous operation. A Remote Desktop Session Host server can operate without a license server for 120 days after initial start up. The official solution is to Activate the RDS/TS CAL License server and point the Server to License server with User/Device License and will be resolve the problem, but if you want to reset the timer and again avail the 120 days grace time here is the solution: Solution: 1) First open the registry editor with "regedit" command in command prompt. 2)open the registry key from below path HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control \ Terminal Server \ RCM \ GracePeriod 3)From GracePeriod delete the key " REG_BINARY".don't delete default registry. 4)then Restart the computer and check the grace period with "tlsbln" command from command