The server has been running the RemoteCmd-service for ages (although it's called rcmd), Jochen, and I'm connecting with administartor priv. The thing is, "net user" works just fine returning a list of all users on the machine but "net user xxxx" gives that [System error 1312 has occurred. A specified logon session does not exist. It may already have been terminated] message.

Think it's got anything to do with my urge to find quadruple-X pornstars on our network??