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Activate a brand new Office product key. Troubleshoot activation errors. Activate Microsoft 365 or a non-subscription version of Office. When you start an Microsoft 365 app that's not activated, you'll be prompted to sign in to Microsoft 365.
Looking for valid & free Microsoft Office 2021 product key? Here is the latest collection of product key for Microsoft Office 2021 here! 100% activation!
You may need to find your Microsoft Office product key, for example, to reinstall and activate Office 2021 after formatting your computer for an upgrade or after replacing it – something that a Microsoft Office lifetime license allows you to do.
If your purchase of Office or Microsoft 365 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, or you can renew your Microsoft 365 subscription.
Instead, for Microsoft 365, Office 2021, Office 2019 and Office 2016, you can view the Microsoft account that Office belongs to. This account takes the place of your product key and can be used to reinstall Office from the Microsoft account, Services & subscriptions page and to activate Office.
To activate MS Office, enter the product key or sign in with your Microsoft 365 account (if the license is linked to the Azure account). A Multiple Activation Key (MAK) or an internal MS Office KMS server can be used to activate Volume Office Edition for enterprise customers.
In this guide, we'll walk you through the steps to install and activate Microsoft Office Professional Plus 2021 (PC). Feel free to contact our support via the messenger icon in the bottom right corner for any questions or issues you may encounter.