Symptoms
- 'Unlicensed product' banner in Office apps
- Error message asking to activate or reactivate
- Some features grayed out until activated
- Prompt to sign in every time you open an app
Likely causes
- CommonNot signed into the correct Microsoft accountOffice checks the account tied to the purchase or subscription.
- CommonSubscription expired or payment failedAn Microsoft 365 subscription lapses if renewal payment doesn't go through.
- CommonNo internet connection during activation checkOffice periodically needs to verify your license online.
- PossibleLicense conflict from installing on too many devicesPlans often cap the number of active installs allowed.
- Less commonCorrupted Office installationA damaged install can fail to read a valid license.
What to do
- Confirm you have an internet connection, then reopen the Office app.
- Sign out of Office and sign back in with the Microsoft account tied to your subscription or purchase.
- Check your Microsoft account's subscription page online to confirm it's active and payment succeeded.
- Check how many devices are activated on your plan and deactivate one if you're over the limit.
- Run the Office repair tool from your system's installed apps settings.
- Restart your computer and try activating again.
- Uninstall and reinstall Office if the problem continues.
When to call a pro
If this is a work or school license, contact your organization's IT or license administrator.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.