I want a specific Windows user to be able to surf, but nothing else. So I aim to run a PowerShell script at the logon of that user, that starts Firefox in a maximized window, and that automatically logs the user out when the Firefox window is closed. The problem is that the user can change the window format to normal or minimized, and that way reach functions that I do not want. So, I would like to be able to block the symbols for minimizing, setting to normal or maximizing the Firefox window. /Rolf