I once trolled a tech support scammer pretty hard through his own incompetence. He kept on trying to run a .NET based registry cleaner in my VM without the .net

I once trolled a tech support scammer pretty hard through his own incompetence. He kept on trying to run a .NET based registry cleaner in my VM without the .net framework installed, and couldn't figure out why it wouldn't work. (I managed to grab the files out of the VM before he deleted them, and it was actually a registry cleaner, some rebrand of a commercial product that I forgot the name of now)