TIA V12 SP1 - Server not Available problem

Peter PLC

Hello Gents

Hope someone can help,

I have a Wincc Server/Engineering station and a Client station,
When I access the .mcx runtime file from the client in WinCC RT Start the logon dialogue appears, I enter the user name and password but I then get a Server not Available popup, any idea why this might be happening?

From Simatic Shell I am able to see both machines on both machines fine.
The windows logon for both machines is the same
Firewall is off
User name and passowrd as set up in User administration on the server has 'Enable remote control' ticked for the user

Any help would be appreciated

Thanks

Cheers

Peter