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 >.

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.

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. If you're unable to activate Windows 11, the Activation troubleshooter could help.

When you get a message that says Windows can't be activated, there are several possible reasons why. Select any of the following topics to see some typical reasons for activation difficulty, along with possible ways to get going again. Missing product key or digital license. A different product key or version of Windows was used during repair.

Windows 10 Windows 7 Windows 8.1. 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.

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

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.

Solution 1: Check the Xbox Live service status. Check the Xbox status page. If you see any services with alerts, expand the service, scroll down to Notifications, and sign in to receive a message when the service is up and running again. Xbox status page. Solution 2: Check your network connection.

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.

This update for Windows Activation Technologies helps detect validation errors and activation exploits. This update also detects any tampering attempts made to important Windows 7 system files. Be aware that some counterfeit copies of Windows include malware.