#Windows 10 product key blocked update

To resolve this issue, apply update KB5000842 or a later update. For more information about Windows 10, version 2004 and 20H2 releases, see Windows 10 update history. To work around this issue, run the Janurelease or an earlier release until this issue is resolved. This issue is not present on devices that run the January 2021 security release or an earlier release. A resulting access denied error causes the product key not to be extracted correctly. This issue might occur when you try to activate the operating system with an OEM Activation 3.0 (OA3) Digital Product Key (DPK).Д®rror 0xC004C003 occurs when a licensing code component tries to access a registry hive without proper access. This issue is not present on devices that are running the January security release or an earlier release. Please note the January 2021 nonsecurity preview release, also known as the вЂњCвЂќ release, was released Februand is separate from the January security release, also known as the вЂњBвЂќ release, which was released January 12, 2021.

If you think you do have a valid license or key, select Troubleshoot below. We canвЂ™t activate Windows on this device because you donвЂ™t have a valid digital license or product key.

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. Windows 10 Enterprise, version 2004 Windows 10 Home and Pro, version 2004 Windows 10 Pro, version 2004 Windows 10 Enterprise and Education, version 2004 Windows 10 Pro Education, version 2004 Windows 10 Pro, version 20H2 Windows 10 Enterprise, version 20H2 Windows 10 Enterprise and Education, version 20H2 Windows 10 Home and Pro, version 20H2 Windows 10 Pro Education, version 20H2 More.

Windows 10 product key blocked