Will Recover Keys show Office 2013/2016 product keys?

It really depends on where you got your copy of Office 2013/2016. For instance, if you bought online and downloaded it - Microsoft did not provide product key for it. Here is what Microsoft is saying about this:

  • A product key isn't provided when you buy and download Office online. Instead, the Microsoft account you used during the first Office installation will be linked to the product and will be needed if you need to reinstall.
If you installed Office 2013/2016 from other source which included product key - in most cases product key will not be stored in the system at all. Only last 5 characters can be recovered. Recover Keys will shows you last 5 characters from product key, product ID and license status, like on screenshot below (Office 2013 is shown on screenshot as Office 15, RETAIL channel):

Microsoft Office 2013/2016 KeyFinder only partial product key

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For more information check this link from Microsoft: http://office.microsoft.com/en-001/access-help/find-your-product-key-for-office-2013-and-office-365-home-premium-HA102830243.aspx#_Toc351539105