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

If you make significant hardware changes on your device, such as replacing your motherboard, Windows will no longer find a license that matches your device, and you’ll need to reactivate …

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

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.

เรียนรู้วิธีค้นหาหมายเลขผลิตภัณฑ์ Windows สําหรับการเปิดใช้งาน และเมื่อคุณจะใช้ใบอนุญาตใช้งานดิจิทัลแทน

Tìm hiểu cách tìm khóa sản phẩm Windows để kích hoạt và khi nào bạn sẽ sử dụng giấy phép kỹ thuật số để thay thế.

A product key is a 25-character code that's used to activate Windows and helps verify that Windows hasn't been used on more PCs than the Microsoft Software License Terms allow.

If your purchase of Office or Microsoft 365 came with a product key, you enter your product key on one of the websites listed below for your product. After you enter your key, you can download and install …

During setup for Windows 11 Home, you'll be asked to enter a product key. Because you already have a digital license for Windows 11 Home, you can skip this step and continue with the installation. …

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