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

The Product Activation Portal enables activation for a wide range of perpetual Microsoft products and supports both connected and non‑connected devices. This evolution ensures activation remains …

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

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 …

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 two methods to which you can activate your …

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

Linking your Microsoft account with your digital license allows you to reactivate Windows using the Activation troubleshooter whenever you make a significant hardware change.

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.

You can only enter a new product key by going to Settings > Update & Security > Activation and selecting Change product key. Command line tools like slmgr.vbs won’t allow a product key from …

Provides several workarounds to the Windows activation or validation error code 0x8004FE33 when you connect to the Internet through a proxy server that uses Basic authentication.