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Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.
Locate your product key for Windows 10 or Windows 11. Depending on how you got your copy of Windows 10 or Windows 11, you'll need either a 25-character product key or a digital license to activate it. A digital license (called a digital entitlement in Windows 10, Version 1511) is a method of activation in Windows 10 and Windows 11 that doesn't ...
Check to see if you have a paper copy of your Windows 25-character product key you can enter to activate Windows 10. If your device was recently repaired at an independent repair facility, contact them to see if the repairs require a new Windows 10 license.
There are three methods to which you can activate your product: Online via the internet, by telephone using our automated systems, and by a live support advocate. Online: When you begin activation, Windows will try to use your internet connection to activate online.
If you used a product key to get to Windows 10, then you’ll need that key again after the hardware change. To find out how to locate your key, see Find your Windows product key. For more info about product keys and digital licenses, see Activate Windows.
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. Windows 11 and Windows 10: In most cases, Windows 11 and Windows 10 activates automatically using a digital license and doesn’t require you to enter a product key.
For help with your product key, see Find your Windows product key. If the troubleshooter is unable to fix your issue, contact support. Note: Windows activation requires an internet connection. For more info, see Get online. Troubleshoot common activation issues.
Here are a few reasons why you might see activation error 0xC004F050: You entered a product key that can't be used to activate Windows. Enter a different valid Windows 10 product key or buy a new product key.
Activate Windows. Learn how to upgrade from Windows 10 Home to Windows 10 Pro or Windows 11 Home to Windows 11 Pro, including how to use a valid product key or the Microsoft Store.
Learn how to activate Office that is pre-installed on new Windows 10 PCs or using a new product key.