Novell GroupWise 2014 R2
This problem appears only after upgrading to GroupWise 2014 R2 or newer.
GroupWise 2014 R2 needs an admin user to log into the HTTP console screens for each of the agents. It is possible that the admin user / password combination is the same for GroupWise Monitor. When this error appears, if you shutdown GroupWise Monitor, wait the 5 minutes and then restart GroupWise Monitor. At this point, the error should have been resolved and the admin console can now be accessed again.
The cause is due to the fact that GroupWise Monitor is running on the same server. You can change the username / password combination on GroupWise Monitor in the configuration to use a different set of credentials than the GroupWise Admin Console.
The easiest way to do this is to re-run the Monitor install and select Configure.