Source: NSS, Common Layer, General
Explanation: Every client has a connection to the server. When a request comes in from a NetWare Core ProtocolTM (NCP) or a NLM program, it supplies a connection ID or station number. NSS uses this number to look up the connection structure. If the connection ID or station number is invalid, then NSS cannot get the connection information it needs to complete the request.
Possible Cause: Corruption occurred in the connection structures stored on the client or the server.
Action: Log out and log in to NetWare again.