Go to office.cõm/setup .
Sign in with your Microsoft account, or create one if you don't have one.
Be sure to remember this account so that you can install or reinstall Office.
Enter your product key, without hyphens, if prompted.
If you don't see the option to enter your product key, it was entered for you automatically.
Locate the Office one-time purchase or individual Office app.
then select Install Office to view your product key.
Select Install Office again in the window where the product key appears.
Follow the prompts to finish the redemption process.
Let's get started page, follow the prompts to sign in again.
Associate your product with your Microsoft account.