Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
If the payment is for a Microsoft 365 subscription, activation is done by signing in with the same Microsoft account, or work/school account, that was used to buy or renew the subscription.
- Open any Office app such as Word or Excel.
- If prompted, select Sign in.
- Sign in with the account associated with the subscription.
- Enter the password for that account.
- After the license is verified, Office activates and the apps are ready to use.
If Office is not already installed or the apps keep returning to a Let’s get started screen:
- Close all Office apps.
- Go to the Services & subscriptions page in the Microsoft account used for the purchase.
- Find the Office product.
- Select Install.
- Complete the installation, then open an Office app and sign in again.
If a new product key was purchased instead of a subscription, redeem it first at Office.com/setup or https://microsoft365.com/setup. After redemption, install Office and sign in with the same account.
If Office shows Product deactivated, select Sign in in the app and use the Microsoft 365 account that owns the subscription.