I\'m writing a transparent WinForms app and I want to hide the app from showing in Task Manager\'s applications tab. I\'m OK with the fact that it will show in Processes (in
Simply setting the form property FormBorderStyle to FixedToolWindow worked for me. On Win 10 it removes it from "Apps" in Task Manager and puts it in "Background processes"...which the OP specified (and was what I wanted also.)
In addition, it removes the form from showing in "Windows Key + Tab" listing of windows...which is what I wanted as well.