Microsoft releases emergency out-of-band update for Win10, specifically fixing the "invalid parameter" error during system activation
IT之家 reported on November 14 that Microsoft yesterday (November 13) released an announcement, rolling out the KB5136493 non-security out-of-band update for Windows 10 22H2 and 21H2 systems, focusing on fixing failures in some system licensing and activation operations.
Regarding applicable versions, IT之家 cites the blog post and states that this update applies to the following versions:
- Windows 10 Enterprise LTSC 2021 (version number rises to 19044.7850 after installation)
- Windows 10 IoT Enterprise LTSC 2021 (version number rises to 19044.7850 after installation)
- Windows 10 22H2 under Extended Security Updates (ESU) status (version number rises to 19045.7850 after installation)
This non-security out-of-band update mainly fixes system activation failures. According to Microsoft, the failure occurs when using the Software Licensing Management Tool (SLMGR) to perform specific operations, and the system may return "0x80041008" and display "invalid parameter". Those mainly affected are organizations that configure Key Management Service (KMS) activation, install product keys, and manage Windows licensing through slmgr.vbs commands or automated processes.
Microsoft explicitly states that devices that are already activated remain activated; devices that already have KMS configuration and do not need to execute related commands further are also unaffected. This fix mainly targets failures in licensing management operations, not a general failure of system activation.
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