iSeries NetServer fails to start

If iSeries NetServer™ fails to start, you may see the following message in QSYSOPR:

 Message ID . . . . . . :   CPIB683       Severity . . . . . . . :   40
 Message type . . . . . :   Information
 Date sent  . . . . . . :   04/01/98      Time sent  . . . . . . :   14:02:55

 Message . . . . :   The iSeries Support for Windows Network Neighborhood
   (NetServer) was unable to start.
 Cause . . . . . :   The required iSeries NetServer job QZLSSERVER was unable to 
   start because of reason code 5.  See the following reason codes and their
   meanings:
     1 - Unable to retrieve user credentials.
     2 - Unable to retrieve credentials.
     3 - Exchange user profile failed.
     4 - Unable to obtain lock for service program QZLSSRV1 in library QSYS.
     5 - Start of the NetBIOS over TCP/IP failed with return code 3420.
     6 - Start of the internal server failed with return code 3420.
     7 - Error occurred when sharing resources with the network.

Use the help information on this message to help you find the cause of the problem.