According to this document, the product key was mailed to you in a mail with subject 'Microsoft Office for Mac – Order Confirmation'. Serial keys for microsoft office 2011 for mac and windows updated january 2015 claim it now! The whole activation procedure is described in Office for Mac 2011 Activation and Product key Information (via ). Microsoft office 2011 mac serial number keygen Whether you want to share files or work online, you can now do it with absolute certainty, as Office for Mac is best compatible with Office for Windows. If you can’t find your product key, it may be in one of these places.
The product key is used during installation to 'unlock' the software. When you install or reinstall Microsoft Office, you are prompted to enter the product key. Once you have your product key, see Activate Office for Mac 2011.