Firefox won't close

Since yesterday's upgrade, firefox won't fully close. It'll look like it has closed when I hit the red x but when I try to open a new instance I'll get an error saying that it's already running and can't be opened again until it's fully shut down.
I'll then see it running in windows task manager but when I tell it to "end process" it'll take five minutes or more to end the process and fully shut firefox down.
Is this a bug in the new version? The browser version is 29.0.1

hello bigtrees, yes unfortunately this is a known bug in the current version when you have set firefox to clear history on shutdown in certain situations. mozilla's developers are investigating the issue and working on a fix.

Similar Messages

I have a problem closing tabs in Firefox v3.6.13. The first tab on the left hand side (ie the page that opens when I launch Firefox) won't close when I click on the red x.

I can't close the left hand tab except by exiting firefox. When i launch firefox the original tab stays open when I click on the red x, even if I have other tabs open.
i can alter the website displayed on the left hand tab but it still won't close and leave other more recent tabs open.

Start Firefox in [[Safe Mode]] to check if one of the add-ons is causing the problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
* Don't make any changes on the Safe mode start window.
See:
* [[Troubleshooting extensions and themes]]

Want to revert to default settings - firefox won't close tabs on closing

Latest version of Firefox doesn't close tabs on closure after attempting to set up new tab groups. Now it won't show Facebook correctly. FB account works but not on this system.

You restore default setting through the Firefox SafeMode. <br />
http://support.mozilla.com/en-US/kb/Safe+Mode
Use - '''''Reset all user preferences to Firefox defaults'''''.

Firefox won't close and has now got 'stuck'!

Hi
My version of Firefox on my home PC (v3.6, I think) always takes a short while before it completely closes.
If I close down Firefox but then restart it again because I've forgotten something it will give me an error message saying that Firefox needs to close completely before I can open it again.
That's fine - I can live with that.
However, last night I did exactly this - needed to reopen Firefox before it had completely closed and this time it has got stuck....I don't get the error message anymore. It won't open by double click, from Explorer or anything. I can't close it from Task Manager. I can't even uninstall it because it is "still open".
Can anyone help?
Thanks!

Firefox often doesn't close properly if I have been using the Blackboard 'virtual learning environment'. Task Manager always reveals that the Firefox process is still running and Java as well. Killing Java allows Firefox to close. Is there a more elegant way of ensuring that Java isn't going to block Fx from closing, e.g. because an applet is invisibly waiting for something? It would be good to have a way of pre-emptively 'clearing' Java before closing Firefox. (Gryllida's solution of disabling Java altogether isn't suitable, because Blackboard and many other sites need it.) Thanks.
I run Firefox 4.0.1 on various machines with different OSs: Win XP Pro x64, Win 7 Pro x64 and Win XP Pro x32. All behave the same in this respect.
David

Firefox won't close completely, CTL+N and hyperlinks don't work

After many years of loving Firefox, lately it is causing me nothing but headaches. If I close Firefox, it doesn't close completely and continues running in the background. It often hangs and sucks so much CPU (upwards of 78%) that my entire system virtually locks up. I can't open a new Firefox window, ... regardless of whether I try from the menu bar or by using CTL+N. Hyperlinks on web pages won't work unless I right click and select "Open in a new tab."
I have tried disabling all of my add-ins. I am using the default theme. I have tried reinstalling Firefox, and yet still have the same problems. This has gotten way beyond being frustrating. I am about ready to completely uninstall Firefox and go back to the very much dreaded IE, so you know I must be desperate. If anyone can help I will be immensely appreciative.

I have that problem too. Actually, I've had that problem with Firefox 3.6.15.
When I close Firefox after, for example YouTube and try to open FF again, it says: "Firefox window is already open" or something like that.
Than I have to shut down a process in Task Manager. Really annoying.
Also, when that problem occurs, Firefox using about 80% of CPU and about 200MB of RAM.
By the way, I've installed FireFox 4 RC 2, and I don't have that problem anymore.

Firefox won't close without using Task Manager - end process; can't start in safe mode or disable add-ons

I've been having a memory leak/hanging problem for weeks -- FF slowly increases memory usage until it's at almost 100% and then freezes and I have to shut it down via Task Manager/end process.
Last week I updated to FF 12, and I also added the Web Developer 1.1.9 add-on. Now every time I open Firefox it tries to go to the "Web Developer installed" page, but the page never loads. Nothing else will load either.
I can't start in Safe Mode because of the problem with having to close it in Task Manager. I select "restart with add-ons disabled" and it just never opens. The Add-On manager page won't load, so I can't disable Web Developer to see if that's the problem.
I've uninstalled Firefox and reinstalled, and it still goes right back to the Web Developer page when I open the freshly installed copy.
Help, please!

Have you already tried clearing the browser cache, opening a blank tab, and trying to open some other website ?
* [[how to clear the cache]]
Instead of trying to open safe mode from within the User Interface menu have you tried alternative methods such as holding the shift key when you start Firefox. (After checking for running Firefox processes or plugincontainer and killing them if found )
* see [[safe mode]]
* [[firefox hangs]]
If using safemode does not help first of all try creating and using a new profile.
* [[Basic Troubleshooting#w_8-make-a-new-profile]]_8-make-a-new-profile
If all the above fail then try a clean re-install of Firefox
* [[Basic Troubleshooting#w_7-reinstall-firefox]]_7-reinstall-firefox

Firefox won't close down all the way after watching a video. I exit out, and the sound continues. When I try to re-open firefox, I get a message about how I have to restart my computer. How do I fix this?

Basically whenever I watch a video and I exit out of the video I have to restart my computer to get Firefox back open. If I exit out or go to a new page while the video is playing, the audio continues like nothing has happened. I've checked my task manager and it shows that Firefox is closed. When I try to re-open Firefox I get an error message that tells me Firefox is running but is unresponsive and I have to restart my computer. How do I get it to stop doing this?

Try holding control, alt and delete down in succession and then a dialogue box will appear with windows task manager. Once open click on the Processes Tab and look for firefox.exe. Highlight this and then click end process. It should come up with a warning but just click Yes. This should then close firefox and allow you to reopen it from your desktop without shutting down your computer. Hope this helps.

After use and not even long use dropdown menus are blank, Firefox won't close.

For a couple of weeks after a short time of use dropdown menus are blank almost as if they have been lifted off the screen but I can see an imprint of where they should be.. Sometimes running the cursor over them seems to make them appear but not often.
When this happens I cannot close Firefox.
== This happened ==
Every time Firefox opened
== a couple of weeks ago

From your description, it seems that an add-on may me causing your issue. Follow the steps at [[Troubleshooting extensions and themes]] to test whether your extensions are causing this behavior. Reply back here with the results and with the name(s) of any extensions you have enabled.

Firefox won't close properly in Vista or Win7

We (my wife and I) have been dealing with this issue for the last year. It's gotten to the point we are ready to migrate back to IE!
Situation:
Boot system
open FF browser
enjoy FF with its addon and browsing ease.
leave FF on and leave for a couple hours
upon returning, click on a new site or try to change pages on same site and it shows it is trying to load the page but NEVER does...
So you close FF, upon trying to open again it says another copy is running, so we bring up taskmgr, find the FF highlight it, click end process and finally we can open FF again.
I have tried it with our plugin's and w/o our plugins and it doesn't seem to make any difference.

See "Hang at exit":
* http://kb.mozillazine.org/Firefox_hangs
* [[Firefox hangs]]

Firefox won't close/ flashplayer won't download to desktop -- getting dizzy!

Found a solution to this problem, I hope, July 22,09 note from "eagleberry" firefox user, but I can not download flashplayer to desktop:
"use firefox to download the flash player setup fromfrom here to get the NPAPI version of flash, save it to your desktop (htt;://get.adobe.com/flashplayer/)
then close firefox using file - Exit, then check the Task Mngr-processes tab to make sure all firefox applications/uses are closed (XP: Ctrl-Alt-Del, Vista: shift-Ctrl-ESC- processes tab)
then run the Flash setup file from your desktop"
does this work? help with desktop download. . . thanks

See if this happen in [https://support.mozilla.org/en-US/kb/Safe%20Mode Safe-mode] , if this is not happen then disable all extensions and then try to find which is causing it by enabling one at a time until the problem reappears.
Use "Disable all add-ons" on the Safe Mode start window to disable all extensions.
Close and restart Firefox after each change from File > Exit
[https://support.mozilla.org/en-US/kb/Troubleshooting-extensions-themes?redirectlocale=en-US&redirectslug=Troubleshooting+extensions+and+themes
Troubleshooting extensions and themes]
see also: [https://support.mozilla.org/en-US/kb/Firefox-hangs Firefox hangs]
thank you
Please mark "Solved" the answer that really solve the problem, to help others with a similar problem.

Firefox won't close after checking plugins

I do a plugins check B4 I close Firefox, then I always run CCleaner after that, but lately CCleaner has been telling me that I still have a browser open and asks if I want it to close Firefox, if I tell it "yes" then it says it is taking too long do I want it to force Firefox to close! I have not changed anything, upgraded, or uninstalled anything. I am running the latest version of Firefox (not Beta) it is the only browser I use. I run Windows XPPro, and work on a IBM ThinkPad T42p.

See "Hang at exit":
*http://kb.mozillazine.org/Firefox_hangs
See "Firefox hangs when you quit it":
*https://support.mozilla.org/kb/Firefox+hangs

Firefox won't close properly with symantec IPS 3.0 extension active

Hi, I have a problem with Firefox 5.0 not closing properly. After I close the browser it stays active as a process (firefox.exe*32) and I have to close that in Task Manager before I can open a new browser window. I've followed instructions on other posts and have found that by disabling all my firefox extensions and re-enabling 1 by 1 it's the Symantec IPS 3.0 that is causing the problem. There doesn't seem to be anyone else posting about this conflict and Norton says it needs to be left enabled.
Any ideas???

Perform the suggestions mentioned in the following articles:
* [[Firefox is already running but is not responding]]
-> Profile in use
* [http://kb.mozillazine.org/Profile_in_use]
Check and tell if its working.

Firefox won't close down completely when I close the program

When I close Firefox I can't reopen it later as it still shows it as running in Task Manager in Win XP. I have to go into Task Manager, shut it down there and then I can reopen it normally.

At least you have found a correct workaround. For troubleshooting info
*See [[Firefox-hangs#w_firefox-hangs-when-you-quit-it]]_firefox-hangs-when-you-quit-it
*and [[Firefox is already running but is not responding]]

Firefox won't close. When I shut it down, the window closes, but I can't reopen it. I get a message that it is still running. When I shut down my PC, I get a message that Windows can't shut down Firefox.

The question pretty much details my problem. I have to force a shutdown of Firefox and reboot to be able to browse again.

See "Hang at exit":
*http://kb.mozillazine.org/Firefox_hangs
*https://support.mozilla.com/kb/Firefox+hangs

Firefox won't close down when changing websites

I keep getting a dialog box stating that Firefox is running, but is not responding, and that to clear it I need to re-start my computer. By the 10th or so time this happens in a day it becomes just a tad trying.
Cures? Hints? Suggestions? Anyone??
Thanks much!
Bill

See "Hang at exit":
*http://kb.mozillazine.org/Firefox_hangs
See "Firefox hangs when you quit it":
*https://support.mozilla.com/kb/Firefox+hangs

Firefox won't close

Similar Messages

Maybe you are looking for