Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Login to the link below
~~http://www2.buyoffice.microsoft.com/usa/~~
Then click on my account to find the products you have purchased
You can also click on the link below to obtain a new product key if you have a proof of purchase:-
http://support.microsoft.com/kb/823570
Outdated information struck 