Source:  PSERVER.NLM

Possible Cause:  The uesr might have mistyped the name of the server,

Action:  Make sure to type the name of the server correctly.

Possible Cause:  The user specified a server that is not on the network.

Action:  List all the servers that the workstation can recognize by using NLIST.

Possible Cause:  The user specified a server that is down for maintenance.

Action:  If the server is down for maintenance, try the command when the server is back up.