RDP And ICA Connection To The Server Fails

ERROR:

'Unable to obtain Terminal Server User Configuration. Error: The RPC server is unavailable'

'The system could not log you on due to the following error: the network address is invalid'

'The system could not log you on due to the following error: the RPC server is unavailable'

QUICKFIX:

Try to UNC to the server, if successful, restart the the netlogon service

Check the Terminal Services Configuration to ensure that it points to the correct server