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
Activity Monitor If you have Activity Monitor active on your Mac you can quit a stubborn app from within it. Dive into Activity Monitor, find the name of the app you wish to Force Quit (it likely shows up in red). Select it, tap the x button at top left of Activity Monitor window and you’ll be asked if you want to Force Quit the application. For more details, you can refer to this article: How to Quit Safari, iTunes and Other App that Won't Force Quit. Disclaimer: Microsoft provides no assurances and/or warranties, implied or otherwise, and is not responsible for the information you receive from the third-party linked sites or any support related to.
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.)
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.
Learn more
How to force an app to close on your iPhone, iPad or iPod touch.
I moved the Firefox app from my Applications to the trash. Does this uninstall it? My hope is that it would and I could just reinstall it. I have yet to download it again.
How To Force Quit Microsoft Download On Macbook Pro
It uninstalls the app but its data is kept in your Library/Application Support/Firefox folder. That's where your profiles (preferences), bookmarks, etc. are located.
I have also had to Force Quit Microsoft Word several times. This is my main concern.
I believe this is a different problem unrelated to Firefox. Does it work sometimes and not others? Hard to analyze without some context.
Have you installed any other software recently?
Could experiment and see how things behave by using another account.
Mac Os Force Quit
Apr 10, 2012 3:03 PM