Outlook 2011 for Mac won’t open

Problem

When you open Outlook on your Mac, it opens for a brief moment and then closes.  You may not see the application load up at all.

Solution

1. Hold the alt key and click on the Outlook icon on the Dock.
• If it is not there, go to the /Applications/Microsoft Office 2011 folder and drag the Outlook file to the Dock.
2. The Microsoft Database Utility window will appear. Click the Rebuild button.
   
3. It will now rebuild your Outlook database. Once it has finished, click the Done button.
4. Close the Microsoft Database Utility.

Source: http://www.fixkb.com/2011/09/outlook-2011-for-mac-wont-open.html