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.

BleepingComputer
@BleepingComputer apparently people didn't read or didn't understand the issue. This is about an application not being able to overwrite the default browser the user has selected. This is a good thing, not Microsoft being evil.

@schmitzel76 @BleepingComputer no, I think people understand this issue all right.

Microsoft wants to prevent any kind of program or script to automatically change the default browser and pdf reader.

This would be something an admin wants to do to prevent usage of Edge throughout the company, or a tool that helps users to protect their privacy by changing several bad default choices that MS set up. You really want tools like privatezilla, win10debloater and so on that help users to switch all the spying default settings off in one go. This driver is meant to prevent or make such programs much harder to use.