Usually, you'd activate Windows 11 (or 10) using the Settings app to enter the product key. However, if you're in an enterprise environment and you have a specific type of activation key, you can ...

Windows remains functional without activation, but you'll be locked out of personalization and other non-essential features until it's addressed.

Windows 11 uses a product key to ensure your OS is genuine—in other words, not pirated. You can find the product key in use on your PC, which is particularly useful if you bought Windows ...