Select your version of Office below to learn how to activate Office.
If this screen appears, Office is installed as an Office 365 Home trial
You'll see this screen if you sign in to Office that was pre-installed on a new device but don't have an Office product associated with your account.
To use Office on your new device, you can activate Office as a 1-month trial of Office 365 Home. You can also buy Office, add Office to an existing Office 365 subscription, or enter a product key from a new product key card. If you have an older copy of Office, you can install that instead.
If you see this message, it means you need to deactivate or sign out of Office on another device before you can activate Office on this device.
If Office can't activate, it eventually becomes unlicensed and all editing features of Office are disabled. Office can become unlicensed for a number of reasons. For example, if your Office 365 subscription expires, you must renew your subscription to restore all features of Office. If Office was pre-installed on your new PC, you must start an Office 365 Home trial or buy Office to continue using Office.