Get help with setup.office.com

Redeeming your product key is a one-time process that adds your new product to your Microsoft account. When you're done, you'll use your Microsoft account, not your product key, to install and activate Office apps.

Note: If you have an existing Microsoft 365 subscription, you can redeem a new product key to extend or renew your subscription.

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What do you need help with?

I need step-by-step help

We'll help you redeem your key for a new product or renewal.

Complete the redemption process

My product key has already been used

Your key can only be used once. But don't worry, you don't need your key to install Office or add people to your subscription.

What to do if your product key has already been used

I don't have a product key

In many cases, you don't need a key to reinstall Office apps.

What to do if you don't have your key

I want to install Office apps

Select the link below to install, reinstall, transfer, or move Office apps without your product key.

Install Office, Visio, or Project

Complete the redemption process

Click to select your product below.

Step 1
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On Microsoft365.com/setup, sign in using your Microsoft account, or create a new one. You'll see your name if we detect your Microsoft account automatically.

Shows the buttons for signing in or creating a new account.

Reset your password

Get help with your Microsoft account

Step 2
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Enter your product key (if prompted), select your country or region, and select your language.

Shows the boxes where you enter your product key.

I don't have a product key

I see "This product key has already been used"

I get a product key error

Step 3
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For uninterrupted service, provide payment info for recurring billing. Now you're ready to install Office apps.

Shows a Microsoft 365 Personal subscription with recurring billing turned on.

If you bought multiple keys, repeat Steps 1-3 for each key to extend your subscription for up to 5 years.

Get help with accounts and billing

Step 1
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On Office.com/setup, sign in using your Microsoft account, or create a new one. You'll see your name if we detect your Microsoft account automatically.

Shows the buttons for signing in or creating a new account.

Reset your password

Get help with your Microsoft account

Step 2
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Enter your product key (if prompted), select your country or region, and select your language.

Shows the boxes where you enter your product key.

I don't have a product key

I see "This product key has already been used"

I get a product key error

Step 3
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Select Next to finish the redemption process. Now you're ready to install Office apps.

Shows how to complete the redemption process by selecting the Next button.

If you bought multiple keys, repeat Steps 1-3 for each key.

Install Office apps, Visio, or Project

Use these steps to install, reinstall, transfer, or move your product.

Step 2
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Select Install for your product.

Shows the Install link on the Services & subscriptions page

Step 3
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Select the options you want (such as 64-bit and language), and then select Install.

Shows the Install button in the Download Office dialog box

Get step-by-step help:

PC steps | Mac steps

Install Office offline

Troubleshoot installation

Next steps for Microsoft 365 subscribers

Share Microsoft 365 Family

Microsoft 365 Family subscribers can share their subscription with their household.

Share your subscription

Set up Office apps and email on your mobile devices

You can install Office apps on your mobile phones and tablets as well.

Set up your mobile devices

What to do if you don't have a product key

Sign in to view the Microsoft account, Services & subscriptions page to see if your product has already been added to your Microsoft account. If it has, you don't need a product key to install your product. If you bought your product online from the Microsoft Store, be sure to sign in using the Microsoft account you used to buy your product.

For help with product keys, see Using product keys with Office.

What to do if your product key has already been used

Your product key can only be redeemed once. It isn't meant to be re-used or shared. If you get a message that your product key has already been used, you can go directly to your Microsoft account, Services & subscriptions page to install your product and manage your subscription benefits.

If you bought Microsoft 365 Family and want to share your subscription, please don't send the product key to the people you want to share with because they will see the same error. Instead, send them an email or link using the procedure in How to share your Office 365 Home subscription benefit. This will add their Microsoft accounts to your subscription and allow them to go to their Microsoft account, Services & subscriptions page to install Office apps on their own devices.

Contact Microsoft support

If you’ve followed the guidance in this article and still need help, visit our Microsoft support page for assistance.

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