Looks like an internal issue, when moving the server and and workstation too
our other subnet who is of our network everything works fine.
And the client has logged on to the server.
when moving back to the original ip and subnet the clients still keeps
autentiticated en works fine also.
i think somthing is blocking the first contact between the server and client
when the contact is there everything is oke.

Somone got ideas why the problem occurs ??

Frank Arnold