To quit (close) a Mac app normally, choose Quit from the app's menu in the menu bar, or press Command (⌘)-Q. If the app doesn't quit, follow these steps to force the app to quit.
Press these three keys together: Option, Command, and Esc (Escape). This is similar to pressing Control-Alt-Delete on a PC. Or choose Force Quit from the Apple () menu in the upper-left corner of your screen.
Select the app in the Force Quit window, then click Force Quit.
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Sep 25, 2018 Just updated to Mojave. I am a heavy iMessage user using the Messages app on my MacBook. I like to 'close' my windows for all my apps running and Mail and Messages would still run (black dot indicator below app icon on dock) in the background and when a new message arrived, I'd click Messages app and the app would pop up right away. Apr 07, 2017 Apps from anywhere else: Apps that aren’t acquired from the Mac App Store and aren’t signed with a developer ID fall into this last category. Apple considers these the least secure, but it doesn’t mean an app is untrustworthy–after all, Mac apps that.
All My Apps Beyonce Unresponsive About Once A Week Machine
You can also force the Finder to quit, if it stops responding. Select Finder in the Force Quit window, then click Relaunch.
If none of your apps are responding, you can force your Mac to restart.
You can also force an app to close on your iPhone, iPad, or iPod touch.