Deactivate an Office 365 Home install
Each Office 365 Home subscription comes with 5 Office installs for Mac or PC computers and 5 tablets. If you run out of installs, you can deactivate one of them so you can install Office on another computer or tablet.
Note Only the subscription owner can see or deactivate someone else’s installs. If you’re not the owner, you can view and deactivate only your own installs.
Keep in mind that deactivating someone’s install isn’t the same as removing them from your subscription. If you want to completely remove someone from your subscription, you can.
Deactivate an Office install
On your account page, under Install Information, click Deactivate Install next to the name of the computer where you want to deactivate Office.
After you deactivate Office on one computer, you can install it on another.
If you’ve deactivated an install from someone sharing your subscription, let them know.
When you deactivate an install, Office will run in read-only mode on that computer. 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.