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 …

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.

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.

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 …

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 …

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.

Fixes an issue in which you cannot activate Windows Thin PC by using a Multiple Activation Key if Internet access is not available.

Microsoft 365 sign-in troubleshooter Microsoft 365 shared computer activation (SCA) troubleshooter Microsoft 365 inventory scan troubleshooter Microsoft 365 network connectivity …