You may be able to recover the Microsoft Office product key online. If you bought the box product at a store and you haven't installed Office 2016 yet, the product key can be found in the packaging. If you continue to have problems signing in to your account page, contact Microsoft support to review your options. Important: If you sign in to your account page with a Microsoft account that's not linked to your subscription, you'll get this message: 'Office isn't associated with this account.' You'll need to sign in with the Microsoft account that was used when you redeemed and installed Office for the first time. On the next screen, click on I have a disk, and then click on the View your product key button to display the install product key.
Under the Account Options, click Install from a disk. If you'd prefer to install Office using a disk and you need the product key, you can find it on your account page.
To install Office, go to Microsoft's My Account page and sign in with the Microsoft account tied to the product and click the Install button. You likely won't need to recover or replace the product key if you purchased Office 2016 online or it's been installed once before. If you uninstall your current version of Microsoft Office, you should keep your product key on file so you can reinstall it at a later time if you choose to do so.
