Cannot start Outlook for Mac 2011

I’m working with Office for Mac 2011(the latest version v14.1.2) on Mac desktop OS X 10.6.8. But recently I could not execute the application Office Outlook no matter how hard I double-click it or right-click it to select Open option. It seems to launch but suddenly disappears.
Can anyone give any ideas about how to solve the problem?
Thanks in advance.

Try
Press Alt when you click the icon of Outlook 2011. Then the Microsoft Database will start. Choose “Rebuild Main Identity”.
I think this will work for I have done it for some times.

I’m having such a desktop problem. Thanks for sharing the solution.