Microsoft Added This Driver to Windows and Said Nothing
Microsoft added an undocumented driver to Windows that silently blocks changes to specific registry keys, defends itself from removal, and can resurrect after being killed. Its name is UCPD.sys (User Choice Protection Driver). Why does it exist? Why is Microsoft silent about it? And how do you get rid of it?
Useful downloads:
Procmon - https://learn.microsoft.com/en-us/sys...
Strings - https://learn.microsoft.com/en-us/sys...
Blog posts about this for further reading:
Xusheng Li - https://binary.ninja/2025/03/25/defau...
Christoph Kolbicz - https://kolbi.cz/blog/2024/04/03/user...
Gunnar Haslinger (post in German) - https://hitco.at/blog/windows-usercho...
Resources from the video:
EU Digital Markets Act - https://digital-markets-act.ec.europa...
Minifilter drivers - https://learn.microsoft.com/en-us/win...
Windows Feature Store (Velocity) - https://msft.chat/wiki/windows-featur...
China - https://en.wikipedia.org/wiki/China
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