Server Authentication

I’ve installed a “test-system” on a Windows Vista machine.

When I try to connect over a the Psi client i can create an new Account, but when i want to go online i get the following message:

“There was an error communicatin with the server. Details: Authentication error: Not autorized”

What can i do? I could not find a meaningful log-file.

The server should act in our LAN.

greeting cisko