several files flagged as Trojan:Win32/Vigorf.A

[sreichertz]

Win11 Pro 25H2 Steam Deck LCD

tools are not usable anymore.
following files are flagged:

.../SteamDeckTools/LibreHardwareMonitorLib.dll
.../SteamDeckTools/PerformanceOverlays.sys

[IslandForShans]

I found a fix:

Install Steam Deck Tools

Go into Security settings and set an exception for the Steam Deck Tools folder in the program files folder

Reinstall Steam Deck Tools (just run the setup again, don't worry about installing)

It should now work. Windows anti-virus got an update recently that flags the Steam Deck Tools files for some reason.