So glad you got it! As I've understood it, this thread was originally principally addressing a Win 8 and 8.1 problem with temp files. Files and folder that had been properly closed couldn't be moved or killed because the system was still holding on to
their temp files... (a problem I'd never had in Win 95, 98, XP or Vista, the only OS's I am familiar with). In that particular case, relaunching explorer.exe cleared them out. This was a really chronic annoyance for ages... and then suddenly (again I can only
speak for myself) the problem evaporated. Some update along the way must have finally addressed the glitch. There's a panoply of other factors that can cause similar behavior, and always have... e.g. exceeding bin capacity, programs that generate their own
temp files like Copernic, that also indexes files and folders. So the early solutions offered here are possibly losing relevance, except for folks with Win 8.* who aren't receiving updates. So it's great to see solutions added, such as yours, for people who
are drawn here for completely different scenarios. My best.