Hi KjellP,
Since this issue is related to Office for Mac 2011 and our forum doesn't focus on this product, we can only provide limited assistance with it.
Based on my experience, you can try to create a new identity and see if it works fine on the new identity. If yes, you can remove the old identity.
To do this, you can refer to the “Step 5” in that article: http://support.microsoft.com/kb/2360509/en-us .
In addition, you can also post this question in our Office for Mac 2011 forum and get more assistance with it.
Office for Mac 2011 forum:
http://answers.microsoft.com/en-us/mac/forum/macoffice2011
Thanks,
Wilfred Ying
