I purchased Office for Mac 2011 from Best Buy about 18 months ago.
I installed and used it, except I chose to NOT use the Outlook, opting to use Mac's iMail instead.

I've now decided to move to Outlook, and cannot get it to work.
I typed in the product key from the original package, which worked fine when I first used it. 
 But now I get this error message: 

The product key is not valid. Make sure that you entered the correct key.  If the key doesn't work, contact Microsoft Customer Service and Support.



How can I fix this?

Thanks,

Jason Beighley

I have the 2011 version of Office for Mac Home &Student. I've registered it and my account shows that I have it and that the product key is correct. When I try to update to get Outlook, I get the following message:

The product key is not valid. Make sure that you entered the correct key.  If the key doesn't work, contact Microsoft Customer Service and Support.


 How do I get around this? I have rechecked the product key and I'm sure it's correct, and yet, I still get the same error message. Clicking on the link only got me to the forum. Does anyone know how to proceed or have a number to call so I can speak to a support person?