After installing and later reinstalling Microsoft Office for Mac 2011 on my new MacBook Pro, my Outlook worked fine.  

However, yesterday I reinstalled again using the same DVD on the same computer and Outlook now no longer works.  

It says: “Could not change to that identity. An unknown error has occurred in Outlook”.  

When I press "OK", it then tells me to "Select an identity".  

There is only one identity showing, which is "Main identity".  

When I press "OK", it goes back to the previous error message, and so on, backwards and forwards between the two messages, and Outlook never opens.  

Can anyone help? Thanks.


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