Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.

Activation helps verify that your copy of Windows is genuine and hasn’t been used on more devices than the Microsoft Software License Terms allow. There are three methods to which you can activate your …

Learn how to use the Activation troubleshooter to resolve common activation issues in Windows.

Learn how to find a Windows product key for activation, and when you'll use a digital license instead.

Activation helps verify that your copy of Windows is genuine and hasn’t been used on more devices than the Microsoft Software License Terms allow. This article will help you troubleshoot and fix common …

You can also try our guided support in your browser to help with activation issues. I thought this device included Microsoft 365 or a non-subscription version of Office.

If you're not activated, complete the activation process with the steps you see on the Activation page. If you experience an error while activating, see Get help with Windows activation errors.

In summary, a product key is used during installation, while an activation code is used to activate the software afterwards. Both are essential for ensuring a legitimate and functional software experience.

If you see a Let's get started screen with options to try, buy, or activate Microsoft 365, this means that Microsoft 365 is installed on your new PC as a 1-month trial of Microsoft 365 Family. You won't …

Use the Microsoft 365 activation troubleshooter to resolve Microsoft 365 subscription activation issues. Select the button below to start the activation troubleshooter.