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Microsoft has shared a workaround for windows 10 activation with a 0xc004c003.
Microsoft has offered a workaround for activation errors 0xc004c003
Some users of Windows 10, version 2004, and 20H2 encountered 0xc004c003 error after installing the preview of cumulative update KB4598291 in January 2021.
This error does not affect customers who have installed the KB4598298 pre-release update for Windows 10 version 1909.
This error may occur when you activate the operating system using the OEM Activation 3.0 (OA3) Digital Product Key (DPK).
The 0xC004C003 error occurs when a licensing code component attempts to access the registry data structure without having the appropriate access rights. As a result, access will be denied, and the error causes the product key not to be retrieved correctly.
The KB4598291 update fixed a bug that caused some Windows 10 Education devices to be deactivated incorrectly after upgrading to Windows 10 version 2004.
However, it looks like this fix may now prevent customers from activating Windows 10 on their devices after installation. On affected systems, you receive the following error message:
I can’t activate Windows on this device because you don’t have a valid digital license or product key. If you think you have a valid license or key, click the “Troubleshoot” button below. The error code 0xC004C003.
Affected versions and editions of Windows 10:
- Windows 10 Enterprise, version 2004
- Windows 10 Home, version 2004
- Windows 10 Pro, version 2004
- Windows 10 Education, version 2004
- Windows 10 Pro Education, version 2004
- Windows 10 Pro, version 20H2
- Windows 10 Enterprise, version 20H2
- Windows 10 Education, version 20H2
- Windows 10 Home, version 20H2
- Windows 10 Pro Education, version 20H2
To successfully activate Windows 10, Microsoft advises against installing the problematic KB4598291 update on your device.
This issue does not occur on devices that have had the January 2021 or earlier security updates installed.
If you have already installed KB4598291, you can uninstall the problematic update by running the following command at a command prompt:
wusa /uninstall /kb:4598291
Microsoft says it is working to resolve this issue and plans to fix an upcoming release. You can also read: Windows 10 update hanged: How to fix it?