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 >.

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

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.

Refunds are typically issued for requests meeting the following criteria: Requests are made within 14 days of the purchase date. Requests are for games in which you haven’t accumulated a significant amount of play time. Note As a limited exception, digital game products may be eligible for a refund within 30 days if you’re unsatisfied with ...

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.

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.

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 .

If you get an error when trying to update, see Fix Windows Update issues. If you're trying to activate Windows 11, see Activate Windows for more info. If you're having trouble installing updates, see Troubleshoot problems updating Windows. For answers to frequently asked questions, see Windows Update: FAQ.

Last updated: January 2024. The issues listed below reflect the issues caused by the most recent product updates. For more troubleshooting help, see Troubleshoot installing Office below. Office for Windows. [FIXED] Error code: PIN-INAPP-INVALIDPIN-8 when you try to activate your Office 2021 product key.

Cause. When this problem occurs, the Windows Process Activation Service refers to the null pointer during configuration changes. This causes the Svchost.exe process to crash and the websites to restart. Resolution. Hotfix information. A supported hotfix is available from Microsoft Support.