MICROSOFT OFFICE

Browse Microsoft Office License Keys

Choose between subscription-based Microsoft 365 or one-time purchase Office 2021, 2019 & 2016 license keys. All are genuine Microsoft product keys with instant email delivery.

What Is a Microsoft Office License Key?

A Microsoft Office license key – also called an Office product key or activation key – is a unique 25-character alphanumeric code that proves your copy of Microsoft Office is genuine and fully licensed.

When you enter this code during installation, Microsoft’s activation servers verify it against their database and unlock the full functionality of your purchased Office edition. Without a valid license key, Office runs in read-only mode with severely restricted features after a trial period ends.

License keys are edition-specific – an Office 2021 license key will not activate Office 2019 or Microsoft 365, and vice versa. They are also platform-linked to either Windows or macOS depending on the product you purchase.