Well for a ton of the more niche tools I can see why they wouldn’t integrate them. I say that even though I can’t live without them at this point haha.

But file locksmith, env variable viewer, basic stuff like that… Really should be built-in

Sure, that ‘fixes’ it. The real question is, if that information is retrievable anyways… Why is it not a built-in part of windows. You get the error popup and it should just show two buttons: "Ok and “Find which program is using it”