Over the past weekend we migrated our single server exchange environemt to enterprise 2010 and we still have one annoying issue. All of our Outlook Clients are on 2003 sp3 and they can all open anywhere from 2-6 shared calendars depending on the user. Once they hit their arbitrary limit they recieve this error "The Connection to the microsoft exchange server is unavailable. outlook must be online or connected to complete this action." The user then has to close outlook and reopen it before they can open any other calendars, but the number of calendars they can open at once stays the same.
Has anyone else seen this behavior and been able to fix it?