"RPC server Unavailable" error while trying to RDP

Try putting this registry key in your regedit if you get the above error:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server

Create a new keyword selecting Dword and name it as IgnoreRegUserConfigErrors

Now double click it and give a value as 1

Now try doing an RDP it should work for you .

This issue is normally seen in 2003 servers and the fix works mostly on 2003 servers