GroupWise Webaccess users login successfully only after the second attempt on 1 Post Office

On 1 of 11 Post Offices, Webaccess users must attempt to login 2 times to have a successful login.

Remove an un-needed and bad Post Office Calendar Publishing Host definition.  In the GroupWise Web Admin Console, under the properties of the problem Post Office, Client Options,  Calendar tab, Web Calendar selection, "Web Calendar Publishing Host".

The defined Calendar Publishing Host that was assigned to the problem Post Office, in the GroupWise Web Admin console, System, "Calendar Publishing", was a bad definition, if you were to edit the definition, it contained only a name and port and no ip address or hostname.  Once removed as stated in the Resolution section, the issue stopped.