Forcefully shut down programs or quit apps that won't close

If you can't close browser windows or exit programs normally, you can force them to close.

Windows

1. Simultaneously press the Ctrl + Alt + Delete keys.
2. Select Start Task Manager.
3. In the Windows Task Manager window, select Applications.
4. Select the window or program to close and then select End Task.

Repeat these steps for each window or program you want to close.

Mac

1. Choose Force Quit from the Apple menu (or simultaneously press the Command + Option + Esc keys).
2. In the Force Quit Applications window, select the program and select Force Quit.