Change your Office product key

Office 2019 Excel 2019 Word 2019 Outlook 2019 PowerPoint 2019 More...

This article applies to Office Home & Business, Office Home & Student, Office Professional, and individually purchased Office apps.
If you bought multiple copies of Office and used the same Install button to install Office on multiple PCs, activation fails on the other PCs. This happens because each Install button is associated with a unique product key that can only be installed on one PC. To fix this, you can change the product key for the other PCs where you installed Office.

Note: After you change your product key, we recommend that you create a list to manage the product keys that you've installed. To learn how, see Manage multiple one-time-purchase Office installs that use the same Microsoft account.

Select your Office version below.

Office 2019, 2016 Office 2013 Office 365 Command line

1. Sign in to your Services & subscriptions page with the email and password associated with the Microsoft account that was used to install Office.
   After you sign in, you should see a list of Office products that are associated with your Microsoft account.
   
2. For the first product that's listed on the page, select View product key. Copy or write down the product key. This is likely the product key that was used multiple times to install Office.
3. Select View product key for the remaining Office products and copy or write them down. These are likely the keys that you'll use to replace the key that was used multiple times.
4. On the device where you want to change the key, open any Office app, select the File menu and then select Account near the bottom of the menu.
5. Under Product Information, select the Change License button.
   If there is no Change License button, you may need to install Office updates.
   
6. Do one of the following:
   • If you're signed in, select Use a different account, and then select Enter product key instead.
     
   • If you're not signed in, select Enter product key instead.
     
7. Enter your Office 2019 or Office 2016 product key, and then select Install this product instead.
   If your product key is new, follow the prompts to complete the redemption process.
   
8. Office begins the update process. Close all Office apps to finish the process.