

The KB4598291 update addressed a bug that would incorrectly deactivate some Windows 10 Education devices following an upgrade to Windows 10, version 2004.

A resulting access denied error causes the product key not to be extracted correctly." "Error 0xC004C003 occurs when a licensing code component tries to access a registry hive without proper access. "This issue might occur when you try to activate the operating system with an OEM Activation 3.0 (OA3) Digital Product Key (DPK)," Microsoft explains. This known issue does not impact customers who installed the KB4598298 nonsecurity preview release. Microsoft has shared a workaround for customers experiencing 0xc004c003 activation failures on Windows 10, version 2004 and 20H2 devices after installing the January 2021 monthly "C" release KB4598291 preview update.
