The only way to I know to quit all apps at once is to shut down your computer with no confirmation by simultaneously pressing Command-Option-Control-Eject (or by forcing it to shut down by pressing and holding the power button, which is generally not good practice).
A better way to quit a bunch applications in quick succession is to press Command-Tab, and then, continuing to hold down the Command key, move your finger from the Tab key to the Q key and press Q repeatedly until all applications have quit.
This is not only a quicker way of doing things on the Mac but is also useful when your Trackpad or Mouse stops working, or your Mac gets stuck for some reason. Read on to learn about the super useful keyboard shortcuts for OS X. Shut down or Restart with keyboard shortcut. Power button: Press the power button to turn on the Mac or wake from sleep. Jan 07, 2019 Close Down apps more quickly. MacOS closes all open apps when it shuts down. Sometimes, this doesn't work if the hard drive has been pushed too hard and the apps don't close down. Sep 28, 2020 If an app on your Mac stops responding and you can't quit the app normally, use Force Quit to close the app. To quit (close) a Mac app normally, choose Quit from the app's menu in the menu bar, or press Command (⌘)-Q.
Sep 16, 2010 9:54 PM
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.
How to force an app to quit
How To Quickly Shut Down All Apps On Mac Os
Press these three keys together: Option, Command, and Esc (Escape). Or choose Force Quit from the Apple menu in the upper-left corner of your screen. (This is similar to pressing Control-Alt-Delete on a PC.)
How To Quickly Shut Down All Apps On Mac Os
Then select the app in the Force Quit window and click Force Quit.
You can even force the Finder to quit, if it stops responding: Select Finder in the Force Quit window, then click Relaunch.
How To Quickly Shut Down All Apps On Macbook Air
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How To Quickly Shut Down All Apps On Macbook Pro
How to force an app to close on your iPhone, iPad, or iPod touch.