Reset Terminal license on Windows 2008, 2008 R2 and 2012 120 days Grace Period

The solution was to delete the REG_BINARY in
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\GracePeriod
Only leaving the default.

Note: you must take ownership and give admin users full control to be able to delete this key.

After a reboot the server should be working again for another 120 Days


Fuente: anilgprabhu.blogspot.com.es