TIPS
Force a Stuck Application to Close
When you are working with an application, you may find that it becomes unresponsive and you cannot interact with the application or even quit the application normally. In that case, you can use an OS X feature called Force Quit to force a stuck or unresponsive application to close, which enables you to restart the application or restart your Mac.
Unfortunately, when you force an application to quit, you lose any unsaved changes in your open documents. Therefore, you should make sure the application really is stuck before forcing it to quit. See the second tip on the next page for more information.
Force a Stuck Application to Close
Click 
.
Click Force Quit.
The Force Quit Applications window appears.
Click the application you want to shut down.
Click Force Quit.
Your Mac asks you to confirm that you want to force the application to quit.
Click Force Quit.
Your Mac shuts down the application.
Click Close (
) to close the Force Quit Applications window.
Are there easier ways to run the Force Quit command?
Yes. From the keyboard, you can run the Force Quit command by pressing 
+
+
. If the application has a Dock icon, press and hold 
+ and then click the application’s Dock icon. In the menu that appears, click Force Quit.
If an application is not responding, does that always mean the application is stuck?
Not necessarily. For example, some application operations — such as recalculating a large spreadsheet or rendering a 3-D image — may take a few minutes, and during that time the application can appear stuck. Similarly, your Mac may be low on hard drive space or memory, which can also cause an application to seem stuck. In this case, try shutting down some of your other applications to free up some memory.
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