If your purchase of Microsoft Office came with a product key, you enter your product key on one of the websites listed below for your product. After you enter your key, you can download and install Office.

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Example of an Office or Microsoft 365 product key:

XXXXX-XXXXX-XXXXX-XXXXX-XXXXX

 

Microsoft Office (PC and Mac)

To redeem a new purchase

Step 1: Go to www.office.com/setup

Step 2: 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 later, without a product key.

Step 3: 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.

Step 4: Follow the prompts to finish the redemption process.

To install or reinstall Office

If you see the error This product key has already been used when you enter your product key on www.office.com/setup, this means your product key has already been redeemed and is no longer needed.

Instead, use your Microsoft account to sign in to account.microsoft.com and install your Office product.