Microsoft Office 2013 and 2016 Product Key
MS changed the algorythm for storing the Office Product Key. Since Office 2013 full product key could be stored online only, not on the user's PC. User's PC has only last 5 digits of the Product Key.
Product keys for one-time purchases of Office and individual Office apps are available at www.office.com/myaccount.
However, you don't need a product key to reinstall or activate these products. If these products are prompting you for a product key, you can sign in using the Microsoft account that you used to buy and download Office.
If you still want to view your product key, here's how:
- Go to www.office.com/myaccount and sign in, if prompted.
- Select your Office product.
- Select View your product key. Note that this product key won't match the product key shown on an Office product key card or in the Microsoft Store for the same purchase. This is normal.
You can read more about
Using product keys with Office 365, Office 2016, or Office 2013