Don't know how to close (quit) programs/applications (Unresponsive program/application)

If a program became unresponsive and you weren't able to quit it via any other method, shut it down. This method is more helpful to laptop users than to desktop computer users, because desktop computers have a dedicated restart button.

To force-shut-down the computer, press and hold the Power On/Off button until the cooling fans stop working (which should be in around 15-20 seconds after you have pressed the power button). Turn it back on after a minute or two.

Maybe your device has a more serious problem for which you are not aware of. If you tried everything but nothing worked, take your device to a repair store. They will diagnose and fix the problem.

If a program became unresponsive and you weren't able to quit it, you can close it via Force Quit.

1. Press and hold Command + Option + Esc
   
   

   

   
   
2. Select the program that has become unresponsive -> Click Force Quit
   
   

   

If you tried everything else, but nothing worked, a simple restart of your computer should be enough to quit the unresponsive program(s).

To learn how to restart your Mac computer, check out the don't know how to restart my device solutions.

Maybe a virus prevents your programs from closing properly. The best thing you should do is to scan it for viruses.

To learn how to check if your device is infected with a virus, check out the viruses/spywares/malware solutions.

If you are not sure which antivirus software to install, check out the don't know which antivirus software to install solutions.

Maybe your computer is slow and prevents the program from functioning (closing) properly.

To learn how to improve the speed of your computer, check out the computer is slow solutions.

1. Open any folder -> Select Applications  -> Utilities -> Activity Monitor
   
   

   
   
   

   
   
   

2. Select the process you don't want to use and click on the "X" button (upper left corner)
   
   
   
   
   

Please note that there are processes that cannot be closed because they are essential for the good performance and stability of Mac OS.