How to View More Information With Activity Monitor You can also open the Force Quit dialog by clicking the Apple menu on your menu bar and selecting “Force Quit.” (Fun fact: Command+Option+Esc is different from the well-known Ctrl+Alt+Delete shortcut on Windows, but it’s actually similar to Windows’ Ctrl+Shift+Escape shortcut, which opens the Task Manager directly without the extra click it takes from Windows’ Ctrl+Alt+Delete screen.) You should only do this if your Mac can’t shut down normally. To force your Mac to shut down, press the Power button and hold it for several seconds. If that shortcut doesn’t work, you’ll likely need to forcibly shut down and restart your Mac. This should work even if a misbehaving application has taken over your screen and your Mac isn’t responding to other keyboard or mouse actions.
To open the Force Quit dialog, press Command+Option+Esc.
This is particularly useful when using a full-screen application, such as a game, and your Mac doesn’t seem to be responding. If an application is frozen on your Mac, you can use the Force Quit dialog to close it. How to Force Quit Misbehaving Apps with Command+Option+Esc
