Quit an unresponsive macOS application

Occasionally, macOS applications may lock up and be unresponsive to commands, including Quit. Sometimes the only solution is to issue a Force Quit command. Force quitting an application will not save your latest changes, but it will often allow you to revive the misbehaving application without restarting your entire computer.

To force quit an application, from the Apple menu, choose Force Quit.... Select the misbehaving application from the list, and then click Force quit. You can also bring up this window by pressing Command-Option-Esc.

Note:

You cannot quit the Finder; the only option available to you is Relaunch, which will reload the Finder.