Odd Microsoft Windows Application Compatibility Fix Database


Klaver7

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Win11 24H2 IOT LTSC / Win11 Pro 25H2
I decided to install an older AMD Adrenalin Edition video driver as it's much smoother and stable. But Windows kept replacing it with well a crappy newer version.

So I thought I would try out the "Device Installation Restrictions" policy.
I went ahead and booted into safe-mode and removed the previous drivers with DDU (network unplugged) and booted back into windows, installed the video drivers that I wanted and headed over to Group Policy Editor.

In Group Policy Editor I went to: Computer Configuration > Administrative Templates > System > Device Installation > Device Installation Restrictions.

In the right pane, "Prevent installation of devices that match any of these device IDs" policy I put my decice ID from my video in. PCI\VEN_1002&DEV_15BF&SUBSYS_D0001458 in my case.

Rebooted and all ok. Plugged in LAN again.
Windows no longer tried to force the uggy drivers!

Today I was about to make another backup with Macrium and noticed "Microsoft Windows Application Compatibility Fix Database" under Programs and Features - Uninstall.

I tried Google search but found very little info.

Found this MS link but at the time I am writing this someone allready uninstalled it.

it does NOT showup under Updates History.

Anybody that has a clue on this ?
 
Windows Build/Version
Windows 11 25H2

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