Enable the following registry settings on the RMS server and reboot.
- HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\LanmanServer\Parameters
Name: DisableStrictNameChecking
Type: DWORD
Value: 1 - HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa
Name: DisableLoopbackCheck
Type: DWORD
Value: 1