Anti End Task, not WM_Close?

[rollstuhlfahrer]

So, why do the users need administrative privileges? - You don't need any administrative privileges if you just use the computer and don't administrate it.

On top of that, Windows comes with a Software Policy Kit which allows you to block unwanted Programs by name and Hash. Your program can't do it in an better way. Those policies even apply to administrative accounts, if wanted.

Bernhard