https://social.technet.microso[..]r?forum=winservergen[link1]

Regedit
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server
dword IgnoreRegUserConfigErrors = 1


Ссылки
[link1] https://social.technet.microsoft.com/Forums/ie/en-US/2e675354-62fc-4b09-874d-e97ca71c09c1/the-rpc-server-is-unavailable-while-trying-to-take-remote-desktop-of-2003-server?forum=winservergen