I can't restart the application and most annoyingly, I can't shut down the computer unless I shut it off with the power switch. I had this problem since I got this computer, please help me. Fortunately, Apple's "Force Quit" dialogue box is only one of the many ways to approach targeting a process to kill it.
Alternative Approaches include:. Activity Monitor Use Activity Monitor to display a list of all the running processes on the computer. You can see if one is displayed improperly or if it's using up large amounts of resources, and then kill it specifically to see if that clears the hang.
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The PID can be looked up several ways, but the most common are to use Activity Monitor or the command line equivalent "top". Using the command line is a more basic approach to killing the process. In some cases -- in which a single application causes the Mac OS X kernel to become extremely busy and slows the system to a halt -- having a Terminal window open can prove beneficial.
If you are lucky enough to have a Terminal window open, and can switch to it, you can kill processes that you otherwise would not be able to since it's virtually impossible to launch Activity Viewer or the Terminal after a thrashing -- freezing -- process starts.
You'll be presented with a list of currently running processes. Once you've found the PID, press the Q key to exit the top program, then enter the following command, replacing PID with the actual number -- without parentheses:. With any luck, the thrashing will stop and you'll be able to re-grain control of the computer -- or at least gain enough responsiveness to access and save currently open work. Force shutdown If things get worse and you need to force a shutdown of the whole system, try the following: Instead of using the Finder's menus to shut down, try using the terminal to issue the shutdown command.
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Open it and type "shutdown -h now" or "shutdown -r now" for a reboot. Since the problem seems to occur for specific programs, that indicates the problem may lie with the program or some of it's resources. Many times a preferences file or other resource could get corrupted so the program has a hard time reading it. Try removing the program's. Simply drag the potentially offending.
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In some cases, applications will have several. Also, note that you may lose some settings or other personal data used by specific applications when these files are deleted. You can also use Spotlight to find other files the program has created in your user library folder, and remove or delete them. Note that doing this most likely will get rid of your personal settings for the program, but most of the time re-entering them in the program's settings will set things up properly again.
Additionally, this is only safe for applications that are bundled in one package. Many complex programs put vital items all over the place when they install, and removing them could break the program or reduce its functionality. For instance, Safari has a "Reset Safari" feature that clears caches, cookies, history, and preferences. In Windows 10, for example, this warning looks like this:. This is a good thing — it means that not only will this individual program you want to be closed actually close , it means Windows will also end any processes that that program started, which are probably also hung up but much harder to track down yourself.
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That's it! The program should have closed immediately but it could take several seconds if there were lots of child processes connected to the frozen program or the program was using a lot of system memory. Easy as pie Here are a few more ideas if Task Manager didn't do the trick:.
In some cases, you can actually give a problematic program a little nudge off the cliff, so to speak, pushing it into a full-blown frozen state, sending a message to Windows that it should probably be terminated. To do this, do as many "things" as you can think to do in the program, even if they don't do anything because the program is crashing. For example, click on menu items over and over, drag items around, open and close fields, try exiting half a dozen times — whatever you want, so long as you do them in the program you're hoping to force quit.
Assuming this works, you'll get a window with a [program name] is not responding heading, usually with options like Check for a solution and restart the program , Close the program , Wait for the program to respond , or End Now in older versions of Windows.
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We have one last trick to force quit a program, but it's an advanced one. A particular command in Windows, called taskkill , does just that — it kills the task you specify, completely from the command line. This trick is great in one of those hopefully rare situations where some kind of malware has prevented your computer from working normally, you still have access to Command Prompt , and you know the filename of the program you want to "kill.
Open Command Prompt. If in the very rare situation that you don't know the filename, but do know the PID process ID , you can execute taskkill like this instead:. If you get an ERROR response that says that a process was not found , check that the filename or PID you used with the taskkill command was entered correctly. The first PID listed in the response is the PID for the program you're closing and the second is usually for explorer.
If even taskkill doesn't work, you're left with having to restart your computer , essentially a force-quit for every program running Software programs and apps sometimes stop responding and won't close on Apple, Linux, and other operating systems and devices, too. It's certainly not a problem exclusive to Windows machines. On a Mac, force quitting is best done from the Dock or via the Force Quit option from the Apple menu. In Linux, the xkill command is one really easy way to force quit a program.
Open a terminal window, type it, and then click the open program to kill it. To force quit an app on iPad and iPhone devices, double-press the Home button, find the app you want to close, and then swipe it up as if you're tossing it right off the device.
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Android devices have a similar process: swipe up from the bottom of the screen and then swipe the unresponding app up even further, off the screen. Or, for some Android devices, tap the square multitasking button, find the app that's not responding, and then toss it off the screen Share Pin Email. He writes troubleshooting content and is the General Manager of Lifewire. Here's how to do it:.
Bring the program you want to quit to the foreground by tapping or clicking on it. Press and hold one of the ALT keys. While still holding the ALT key down, press F4 once. Let go of both keys. Here's how:. Do you want to end the process tree of [program file name]?