The Spinning Wait cursor is displayed, and the application status is displayed as 'Not Responding.' Shortly after you start Microsoft Outlook for Mac 2011 on Mac OS X El Capitan (version 10.11), Outlook hangs when it tries to sync with the server. The Microsoft KB article ( KB 3098396) describes how the bug caused Outlook to hang whenever it attempted to sync online with email servers:
If you're one of the users who upgraded OS X to El Capitan last week and are having issues with Outlook 2011, you're in luck: Microsoft has released a fix for the show-stopping bug affecting Outlook 2011 for Mac.