Deactivate an Office 365 Home, Personal, or University install
If you run out of Office 365 installs, you can deactivate one so you can install Office on a different PC, Mac, or tablet.
Note If you’ve shared your Office 365 Home subscription, you can deactivate installs for anyone using your subscription. Deactivating someone’s install isn’t the same as removing that person from your subscription. If you want to completely remove someone from your subscription, you can.
Deactivate an install
On your My Account page, choose Install.
On the Install page, choose Deactivate Install next to the name of the computer or tablet that has the install you want to remove.
After you deactivate an install, Office will run in read-only mode on that computer or tablet. That means you’ll be able to view and print documents but you won’t be able to edit them or create new ones.
If you want to completely remove Office, you can.