Microsoft is now using a Windows driver to prevent users from changing the Windows 10 and Windows 11 default browser manually or through software.

https://www.bleepingcomputer.com/news/microsoft/new-windows-driver-blocks-software-from-changing-default-web-browser/

New Windows driver blocks software from changing default web browser

Microsoft is now using a Windows driver to prevent users from changing the configured Windows 10 and Windows 11 default browser through software or by manually modifying the Registry.

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