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

Learn how to activate Windows using an internet connection, automated system, or live support advocate.

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 …

When you get a message that says Windows can't be activated, there are several possible reasons why. Select any of the following topics to see some typical reasons for activation …

When you get a message that says Windows can't be activated, there are several possible reasons why. Select any of the following topics to see some typical reasons for activation …

Learn more about finding your Windows 7 or Windows 8.1 product key.

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

Learn more about finding your Windows 7 or Windows 8.1 product key.

Jan 10, 2023 · Support for Windows 8.1 ended on January 10, 2023. Learn what it means for you and how to move to a supported version of Windows.

Learn how to prepare your Windows device for a hardware change and find help reactivating Windows after a hardware change is complete.

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