Have a user whose Out of Office just stopped working. User was using Outlook 2007. Upgrading to 2010 did not work. We are on Exchange 2010 SP1, update rollup 3. Creating a profile on a completely different workstation does not help so its not a local issue. Not even sure where to start or how to troubleshoot. I did run a test autoconfiguration by holding down the control key and right clicking the Outlook icon. User is correctlly pointing to the OOF server same as everyone else. Is Out of Office a rule just like local rules you would set. I mean I know how its set in Outlook but is it stored on the server just like a rule?