Question : Terminal Server Error - RPC server is unavaliable

Hi all, I have a Client with a setup of 2 Boxes. SBS 2003 and then I have another Server 2003 on the domain running Terminal Server.
I did a restart after installing software "Interbase Engine 6" on the Server running TS.
After the restart I tried to login remotely and got the error The system cannot log you on because of the following error - "RPC server is unavaliable".
I then got someone onsite to login to the server console and connect me via VNC.
I then looked around and noticed that the Terminal Server Licencing had stopped.
So I then manually point TS Licencing Console to the TS server.
It then finds the licences.
I then again try and login remotely but still the same error and I cant login remotely.
When I restart the Server it drops the licences again.
I am in real need on this one.
Any help would be appriciated.

Answer : Terminal Server Error - RPC server is unavaliable

I have found a solution which fixed the problem.
However I still dont know what exactly was wrong and why it happened.

Solution:

Goto : HKLM\System\CurrentControlSet\Control\TerminalServer

Add DWORD : IgnoreRegUserConfigErrors

Set Value to : 1

Works like a charm.