Dotfile madness
On Windows I've never put anything in C:/, yet I have a shitload of install.res.xxxx.dll files, shitload of eula.xxxx.txt files, globdata.ini, vcredist.bmp, install.ini, VC_RED.msi. In my home folder I've .QtWebEngineProcess folder (never installed qt), .mongorc.js (which is empty), .v8flags.xxxx.json, .dbshell, and so on and so on. I'm not delving into insanity which is /Program Data, Windows/Temp, or [user]/AppData