MSIX: Unable to update TargetDevice in Manifest XML file

Hi shreedhar_ghare,

According to the Supported platforms - MSIX | Microsoft Docs article, the Windows Apps with Services is unsupported on your targeted client devices. As this functionality is only supported on Windows 10 2004 (and newer).

The MSIX Packaging Tool will automatically override the version settings to Windows 10 Insider Build (November 2019) version: 10.0.19025.0 if an App service is detected. Which explains why when you set your version to below this value, the tool will override it.

Apologies, I must have copied the link incorrectly. Thank you for sharing the log information in this post.

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Thanks,

Roy