Find your Windows product key - Microsoft Support
网页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 ...
Activate Windows - Microsoft Support
网页You’ll need to use a valid product key to activate Windows 10 on a device that has never had an activated copy of Windows 10 on it. You’ll also need to use a valid product key if you're installing an edition of Windows 10 that wasn’t previously activated on the device.
Product keys for Windows - Microsoft Support
网页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.
Get help with Windows activation errors - Microsoft Support
网页Enter a valid product key that matches the version and edition of Windows 10 installed on your device. If Windows is installed on a device that connects to a Key Management Service (KMS) server, contact your organization's support person …
Reactivating Windows after a hardware change - Microsoft Support
网页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.
Upgrade to Windows 10 Pro - Microsoft Support
网页Learn how to upgrade Windows 10 Home to Windows 10 Pro to access more advanced security and networking features.
Upgrade to Windows 10: FAQ - Microsoft Support
网页If you’re installing Windows 10 for the first time, you’ll need to enter a valid Windows 10 product key or buy a full version of Windows 10 during setup for this tool to work. If you’ve previously installed Windows 10 on your device, you should have a digital license and Windows 10 will automatically activate without entering a product key.
Upgrade Windows Home to Windows Pro - Microsoft Support
网页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.
Using the Windows Activation troubleshooter - Microsoft Support
网页Find your Windows product key 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. If you're unable to activate Windows 10, the Activation troubleshooter could help.
Activate Office - Microsoft Support
网页Learn how to activate Office that is pre-installed on new Windows 10 PCs or using a new product key.