Symptoms. Windows activation or validation fails when you try to activate Windows operating systems over the Internet. Additionally, you may receive one or more of the following errors: Error code: 0x80004005 Description: License Activation (SLUI.exe) failed.

Summary. Windows 10, version 2004 and 20H2 devices that have the January 2021 nonsecurity preview release, or a later version, installed might experience Windows activation failures containing error code 0xC004C003. Activation. Edition: < edition name >.

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. To use the troubleshooter, select Start > Settings > Update & Security > Activation , and then select Troubleshoot .

If you're having trouble activating Windows 11, follow these steps to fix activation errors: Confirm that your device is up to date and running Windows 11. In the search box on the taskbar, type winver, and then select Winver from the list of results. You'll see the version and build of Windows.

Windows 10 Windows 7 Windows 8.1. 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. When you get a message that says Windows can't be activated, there are several possible reasons why.

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

in Activate Windows. Then, use the following info to help you successfully prepare for a hardware change and reactivate Windows. Prepare your Windows 11 device for a hardware change. First, follow these steps to find out if Windows 11 is already activated. Select the Start button, then select Settings > System > Activation .

These errors will appear if you try to redeem and activate Office before Windows can activate itself. To fix this problem, make sure your computer is connected to the Internet and check the Windows activation status: On your Windows task bar, in the Type here to search box, type Activation.

When you try to activate Windows 7 or Windows Vista, you may receive an error message that is accompanied by an error code and its description. This article will guide you through step-by-step methods to help you resolve your problem.

Enter a different valid Windows 10 product key or buy a new product key. For more info, see Activation in Windows 10. You upgraded to Windows 10, but the activation servers were busy. If you upgraded from Windows 7 or Windows 8.1, Windows 10 will be automatically activated, or you can select Activate and try again.