I do have a 'Microsoft user data' file in 'my documents' & it has all the info. I need for Outlook but my Mac keeps making a 'new' - microsoft user data- file. Why does it not recognize the'Microsoft user data' file that is there?  
All these problems started when my Mac downloaded update 14.2.5 & all my Outlook information disappeared. I know it is in the 'microsoft user data' file in 'my documents'- but my MAC doesn't see it.
I would appreciate a response if possible.
Thank you.

After installing the Office: Mac 2011 when I open Outlook and choose my main identify it does not recognize the identity.  When I tried to rebuild my main identity, it tells me database cannot be rebuilt. This is the first time outlook is installed on my computer. HELP! I’m at a loss on what to do.