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Product activation for Windows – online & support telephone numbers
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 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.
Activate Windows - Microsoft Support
Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.
Using the Windows Activation troubleshooter - Microsoft Support
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 11, the Activation troubleshooter could help. To use the troubleshooter, select Start > Settings > System > Activation , and then select Troubleshoot .
Get help with Windows activation errors - Microsoft Support
Windows 11 Windows 10. 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 errors in Windows. For help finding your product key, see Find your Windows product key.
Find your Windows product key - Microsoft Support
PRODUCT KEY: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX. 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.
Applies To: Microsoft account dashboard
Description of the Office Activation Wizard - Microsoft Support
Summary. This article provides an overview of the Microsoft Office Activation Wizard. Office includes an Activation Wizard. To fully use Office, you must activate Office. If you do not activate the product after you install it, the Office programs can be started only in reduced-functionality mode.
Windows activation or validation fails with error code 0x8004FE33
Workaround. Method 1: Activate Windows by telephone. Use the Windows Activation Wizard to activate Windows through the automated telephone system. To do this, follow these steps for your version of the operating system. Windows 8 and later versions. Windows Vista and Windows 7.
Download and install or reinstall Microsoft 365 or Office 2021 on a PC ...
Activate Microsoft 365 or Office. To open an app, select the Start button (lower-left corner of your screen) and type the name of an app, like Word. If you have Windows 8.1 or 8.0, type the name of an Microsoft 365 app on the Start screen.
Applies To: Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Admin, Microsoft 365 for Mac, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin