Windows 7 – Prevent Programs from Locking Ctrl + Alt + Del

ctrl-alt-deletewindows 7

I have a program that hangs randomly. Whenever it hangs, even the Ctrl+Alt+Delete or Ctrl+Shift+Esc combinations can't take me out of the program and into the task manager. The only solution is to force the computer to shut down by holding down the power button.

I don't get why Ctrl+Alt+Delete can be overwritten by any program. Is there any way to prevent programs from overriding Ctrl+Alt+Del?

Best Answer

Ctrl+Alt+Del is handled at the lowest level of the OS and cannot be overridden by user-space programs. This is why Windows requires Ctrl+Alt+Del before logon - this will ensure that the keys following the Ctrl+Alt+Del be handled by Windows and not other software.

Most likely your program that hangs has completely stopped the OS from running (e.g. causing memory/graphic card trouble and so on).