Recently I am facing remote desktop login problem in on Windows 2003 Server.
While I am enter user name and password server give me logon error.

“The system cannot log you on due to the following error:
The RPC server is unavailable.
Please try again or consult your system administrator.


From another member server with admin rights,

open the eventvwr and connect remotely to the faulty server (application log): errors on UserEnv

then to solve this issue:

open the remote registry using regedit and connect to the faulty server remotely

then create this registry key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server

Create a new Value selecting Dword and name it as IgnoreRegUserConfigErrors and give a value as 1

Reboot is not required.

Now try doing an RDP – it should work!