Firefox stops responding when starting

Basically, Firefox has worked fine for 3 months on this computer, no problems. I haven't installed any new add-ons since I set it up initially. I closed out of my session, went and had lunch, came back and now within 5-10 seconds after starting up Firefox, it freezes. I deleted my cache and nothing changed. I can't use the profile manager because you have to be in Firefox to do so, and it immediately stops responding.
I did a complete reinstall after wiping everything that I could, and it worked for one full session. When I closed it and opened it again, same thing as before. Only thing different from today from yesterday was a single game installation (Sim City 4 what whaaat), otherwise there's been no change to my computer's files.
Any help?

Are you getting any error message or no
When Firefox hangs, it stops responding to your clicks and keystrokes and doesn't seem to be doing anything. Also, a "(Not Responding)" label is displayed in the title bar and the mouse becomes a spinning wait cursor when it's over the Firefox window. This article gives you solutions to Firefox hangs depending on when they happen
https://support.mozilla.org/en-US/kb/firefox-hangs-or-not-responding?esab=a&s=stops+responding&r=0&as=s#os=win7&browser=fx17

Similar Messages

Firefox stops responding when started up

As soon as I start Firefox the program stops responding and I cannot do anything but end the process.

A possible cause is security software (firewall,anti-virus) that blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program.
Remove all rules for Firefox and the plugin-container from the permissions list in the firewall and let your firewall ask again for permission to get full unrestricted access to internet for Firefox and the plugin-container process and the updater process.
See:
*https://support.mozilla.org/kb/Server+not+found
*https://support.mozilla.org/kb/Firewalls

Firefox stops responding when I try to play words with friends, eventually a box pops up about script

First, let me say I have the latest version of Firefox and Adobe Flash Player and Java Script. When I click to play Words With Friends (on pc) my computer starts racing and sounds loud and every thing freezes. If I try to click on slider or anything else, it says Mozilla Firefox (not responding), then it takes several minutes and a box pops up that says something about a script, do I want to continue or ?(I can't remember), after I click continue, I can play the game, but, at any given time Firefox will stop responding again!! A box also pops up from AVG saying that Firefox is using too much memory. Just an aside, I can play Scrabble on Facebook without any problems whatsoever. Please help, it is driving me crazy. Thanks

Sounds that you are missing the plugin that is used to play those videos embedded in Firefox. 
Your system details list doesn't show any media player plugin, so you will either have to check if the plugin(s) are installed, but disabled or install missing plugins.
*https://support.mozilla.org/kb/Popular+plugins
You may need the new WMP plugin (np-mswmp.dll) because Flash always uses a dedicated player to play the videos and would never offer to save videos directly unless an extension is used.
* https://support.mozilla.org/kb/Using+the+Windows+Media+Player+plugin+with+Firefox
* http://kb.mozillazine.org/Windows_Media_Player#Missing_plugin

Firefox stops responding when scroling down on youtube.

when i go to youtube and don't scroll down everthings find but if do there a 60% chance that it will stop responding and crash. and i have uninstalled and refreshed firefox and no changes am getting to the point of leaving firefox if i can't fix it

'''Try Firefox Safe Mode''' to see if the problem goes away. [[Troubleshoot Firefox issues using Safe Mode|Firefox Safe Mode]] is a troubleshooting mode that temporarily turns off hardware acceleration, resets some settings, and disables add-ons (extensions and themes).
'''If Firefox is open,''' you can restart in Firefox Safe Mode from the Help menu:
* Click the menu button [[Image:New Fx Menu]], click Help [[Image:Help-29]] and select ''Restart with Add-ons Disabled''.
'''If Firefox is not running,''' you can start Firefox in Safe Mode as follows:
* On Windows: Hold the '''Shift''' key when you open the Firefox desktop or Start menu shortcut.
* On Mac: Hold the '''option''' key while starting Firefox.
* On Linux: Quit Firefox, go to your Terminal and run ''firefox -safe-mode'' (you may need to specify the Firefox installation path e.g. /usr/lib/firefox)
When the Firefox Safe Mode window appears, select "Start in Safe Mode".
;[[Image:SafeMode-Fx35]]
'''''If the issue is not present in Firefox Safe Mode''''', your problem is probably caused by an extension, theme, or hardware acceleration. Please follow the steps in the [[Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems]] article to find the cause.
''To exit Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.''
When you figure out what's causing your issues, please let us know. It might help others with the same problem.

Silverlight plugin stops responding when starting a movie on Netflix

Same crash report every time:
Problem signature:
Problem Event Name: APPCRASH
Application Name: plugin-container.exe
Application Version: 37.0.2.5583
Application Timestamp: 552ef76c
Fault Module Name: mozalloc.dll
Fault Module Version: 37.0.2.5583
Fault Module Timestamp: 552ee9ae
Exception Code: 80000003
Exception Offset: 00001aa1
OS Version: 6.1.7601.2.1.0.256.48
Locale ID: 1033
Additional Information 1: 0a9e
Additional Information 2: 0a9e372d3b4ad19135b953a78882e789
Additional Information 3: 0a9e
Additional Information 4: 0a9e372d3b4ad19135b953a78882e789
When I close Firefox (using Task Manager), Firefox is still running under processes. After closing and reopening, error does not occur again until a reboot. I have followed the various "fixes" on various sites (including this one) and none works. I have uninstalled and reinstalled. I have uninstalled all add-ons. Unistalled/reinstalled Silverlight. Error continues. Does not occur on IE or Chrome. Moving to Chrome if a fix is not found. Started with upgrade to 37.0

Are you getting any error message or no
When Firefox hangs, it stops responding to your clicks and keystrokes and doesn't seem to be doing anything. Also, a "(Not Responding)" label is displayed in the title bar and the mouse becomes a spinning wait cursor when it's over the Firefox window. This article gives you solutions to Firefox hangs depending on when they happen
https://support.mozilla.org/en-US/kb/firefox-hangs-or-not-responding?esab=a&s=stops+responding&r=0&as=s#os=win7&browser=fx17

Firefox stop responding when you click in the window.

If you click anywhere in the content window the program stops responding. Title bar does not display "not responding". Can access menu function sometimes, but most of time program hang as soon as you click in the window.
This problem started on 3/2/13 when the program was updated.

The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information.
Note: ''This will cause you to lose any Extensions, Open websites, and some Preferences.''
To Reset Firefox do the following:
#Go to Firefox > Help > Troubleshooting Information.
#Click the "Reset Firefox" button.
#Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
#Firefox will open with all factory defaults applied.
Further information can be found in the [[Reset Firefox – easily fix most problems]] article.
Did this fix your problems? Please report back to us!

Firefox stops responding when trying to "save page" or "save image"

Windows 7 64 bit and Firefox 28. When trying to 'Save Page' or 'Save Image' the save dialogue window is nearly blank, then info bar shows 'not responding'. I have tried all the tips in the support pages. Resetting Firefox, Starting Firefox in 'Safe Mode'. Upgrading graphics driver to latest version. Turning off 'Hardware Acceleration' in options. Nothing resolves the problem. This issue has only recently started, the last time I tried saving an image it worked fine, certainly prior to Microsoft's most recent 'upgrade Tuesday'.
Edit:
Checked the save dates of the last images I successfully saved from within Firefox and compared them to my windows update log. The Microsoft March 'Update Tuesday' was installed on March 14th. My last successfully saved Firefox images were saved the following day on March 15th. Thus it is unlikely that the Firefox saving issue is a result of a Windows Update corruption. So the question is what changes have Mozilla made to Firefox between 15th and 24th March 2014 ???

I understand that finding a root cause is ideal, and I would be happy to further investigate this with you.
Since it is still happening in Safe Mode [https://support.mozilla.org/en-US/kb/troubleshoot-issues-with-plugins-fix-problems please try to troubleshoot the plugins and extensions]
The other route is to troubleshoot the downloads folder and antivirus to make sure the downloading of the image is not having an issue either. [http://mzl.la/LJ0h2w]
In the meantime there is an add on that enables this [https://addons.mozilla.org/en-US/firefox/addon/save-images/ Save Images]
Please post back with your results, there have been other reports, but no issue filed yet.

Firefox stops responding when trying to access facebook.

As of Sunday I cannot access Facebook. When I type in facebook in to the address bar Mozilla circle spins and then stops and eventually goes to "not responding." Every other website page I try to load is perfectly fine. And facebook page was fine as of Saturday afternoon. I came home on Sunday and it's not working now. Can anyone help? I have downloaded and run ccleaner, cleared cookies and cache with Mozilla. Not sure what else to do.

Hello,
'''Try Firefox Safe Mode''' to see if the problem goes away. [[Troubleshoot Firefox issues using Safe Mode|Firefox Safe Mode]] is a troubleshooting mode that turns off some settings and disables most add-ons (extensions and themes).
''(If you're using an added theme, switch to the Default theme.)''
If Firefox is open, you can restart in Firefox Safe Mode from the Help menu by clicking on the '''Restart with Add-ons Disabled...''' menu item: 
[[Image:FirefoxSafeMode|width=520]] 
If Firefox is not running, you can start Firefox in Safe Mode as follows:
* On Windows: Hold the '''Shift''' key when you open the Firefox desktop or Start menu shortcut.
* On Mac: Hold the '''option''' key while starting Firefox.
* On Linux: Quit Firefox, go to your Terminal and run ''firefox -safe-mode'' (you may need to specify the Firefox installation path e.g. /usr/lib/firefox)
''Once you get the pop-up, just select "'Start in Safe Mode"''
[[Image:Safe Mode Fx 15 - Win]]
'''''If the issue is not present in Firefox Safe Mode''''', your problem is probably caused by an extension, and you need to figure out which one. Please follow the [[Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems]] article to find the cause.
''To exit Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.''
When you figure out what's causing your issues, please let us know. It might help others with the same problem.
Thank you.

Firefox stops responding when I try to access anything other than the home page; even after reseting and reinstalling it.

I have tried resting Firefox and even sacrificed all my data (bookmarks, add-ons, saved passwords, the whole shebang) for a clean installation. Firefox Stared hanging and doing the "(Not Responding)" thing with a whited-out window. Thus force me to force close Firefox.
This happened as soon as I updated my computer (running Windows 7) and the Task manager is show high usage of processes. All my other browsers work (Chrome, Safari, and even the god forsaken IE) don't hang when trying to leave the home page, browse fine, and close and reopen perfectly.
Needless to say, I'm annoyed with this development.

''Sashoto Seeam [[#answer-689162|said]]''
<blockquote>
Did you try the minimize memory usage. If not then try it by following method:
- On your navigation bar of Firefox write about:memory
- Click on the button "Minimize memory usage"
Hope it will work!
</blockquote>
Unfortunately, I can't even use the navigation bar without triggering the high process usage thing. So this is not an option.
''cor-el [[#answer-689165|said]]''
<blockquote>
It is possible that your security software (firewall, anti-virus) blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program.
Remove all rules for Firefox and the plugin-container from the permissions list in the firewall and let your firewall ask again for permission to get full, unrestricted, access to install for Firefox and the plugin-container process and the updater process.
See:
*https://support.mozilla.org/kb/Server+not+found
*https://support.mozilla.org/kb/Firewalls
*https://support.mozilla.org/kb/fix-problems-connecting-websites-after-updating
You can check if you can start Firefox in [[Safe Mode|Safe Mode]] by holding down the Shift/Options key.
*https://support.mozilla.org/kb/Safe+Mode
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
</blockquote>
Tried this stuff as well. Turned Norton off and it didn't work. Restarted my computer with Norton off, still didn't work. And Firefox didn't wok after I turned Norton back on. Safe mode also doesn't work.

Firefox stops responding when I try to clear my cookies-or it just does nothing.

Yesterday, I tried to clear my cookies-for security-I clicked on the 'clear' button and then I got the spinner thing. It then went to 'firefox is not responding'. One time-yesterday-when I clicked clear-it returned to the original 'clear cookies' screen-but I checked. It hadn't cleared anything. I was also getting the 'bad script' thing. I ran my anti-virus. Things were fine.

Didn't work. My cookies still haven't been cleared and I got a 'not responding' message when I tried to return to a prior screen.

Firefox stops responding when I click on a link

my daughter is homeschooled and when she is doing her schoolwork she sometimes has to click on a link and when she does, it starts to load and then freezes, I can go to the start menu or x out but nowhere else on the page, when I check the task manager, it says firefox is not responding

Hello,
'''Try Firefox Safe Mode''' to see if the problem goes away. Safe Mode is a troubleshooting mode, which disables most add-ons.
''(If you're not using it, switch to the Default theme.)''
* On Windows you can open Firefox 4.0+ in Safe Mode by holding the '''Shift''' key when you open the Firefox desktop or Start menu shortcut.
* On Mac you can open Firefox 4.0+ in Safe Mode by holding the '''option''' key while starting Firefox.
* On Linux you can open Firefox 4.0+ in Safe Mode by quitting Firefox and then going to your Terminal and running: firefox -safe-mode (you may need to specify the Firefox installation path e.g. /usr/lib/firefox)
* Or open the Help menu and click on the '''Restart with Add-ons Disabled...''' menu item while Firefox is running.
[[Image:FirefoxSafeMode|width=520]]
''Once you get the pop-up, just select "'Start in Safe Mode"''
[[Image:Safe Mode Fx 15 - Win]]
'''''If the issue is not present in Firefox Safe Mode''''', your problem is probably caused by an extension, and you need to figure out which one. Please follow the [[Troubleshooting extensions and themes]] article for that.
''To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.''
''When you figure out what's causing your issues, please let us know. It might help other users who have the same problem.''
Thank you.

Firefox stops responding when opening dialog box

I recently had a problem with redirecting Google results to a variety of random websites. I ended up running ComboFix and that problem went away. Since then however, I have noticed that I cannot open any dialog boxes through Firefox (file upload, save as, download, options). Whenever I try the browser freezes and when i try to do anything it says it is not responding. I then close the program and sometimes I have to end the process in the task manager in order to open Firefox again.

Do a clean reinstall.
Download a fresh Firefox copy and save the file to the desktop.
* Firefox 5.0.x: http://www.mozilla.com/en-US/firefox/all.html
* Uninstall your current Firefox version.
* Do not remove personal data when you uninstall the current version.
Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.
* It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.
Your bookmarks and other profile data are stored elsewhere in the Firefox Profile Folder and won't be affected by a reinstall, but make sure that you do not select to remove personal data if you uninstall Firefox.
* http://kb.mozillazine.org/Profile_folder_-_Firefox
* http://kb.mozillazine.org/Profile_backup

Whenever I try to upload a file, firefox stops responding as soon as I try to select the location of the file.

Every time I try to upload a file, firefox stops responding when I try to select the location of the file. It happens in Internet Explorer as well. Any suggestions?

It happens on all sites, this one included. The "file upload" window opens for me to select a file but before a list generates, firefox stops responding. It must be my computer, since it happens with internet explorer as well, but I don't know how to fix it.

Firefox 13.0.1 stops responding when removing cookies on my MacBook Air

Firefox 13.0.1 stops responding and I have to force it to quit when I try to clear cookies on my MacBook Air using
Tools->Clear Recent History->cookies selected
Preferences->Privacy->Clear Recent History when Firefox Closes->cookies selected
In either case, if I do not select cookies I have no problem.
Preferences->Privacy->Show Cookies->Remove All cookie has no problem.
I can recover simply by forcing Firefox to quit then restarting Firefox. I then deselect cookies in both cases and Firefox acts normally.
I do not have this problem on my MacBook Pro. Both the Pro and Air have been rebuilt from erased discs within the last several weeks.
This is similar to the thread "Firefox Stops Responding After Adobe Flash 11.3.300.262 Installed" (should be .257)" but in this case I do not access a flash site, FlashBlock is installed, and Flash is disabled. The recovery from this problem is very intrusive since I have to delete every file that says "Firefox" and reinstall Firefox.
https://support.mozilla.org/en-US/questions/930683
** Reference Environment without problems that I know about
MacBook Pro 15" (late 2011 series, purchased 1/31/2012)
OS rebuilt from erased disc 6/14/2012
OS X 10.7.4 (11E53)
Java for OS X 2012-004 v 1.0
Airport Utility 6.1
Safari 5.1.7
Flashback malware removal tool v 1.0
iTunes 10.6.3
Mac OS X Update Combined OS X 10.7.4
AmazonMP3 Downloader 1.0.16
Flip4mac Media Plugin 2.4.4.2
Java Applet Plugin 14.3.0
Quicktime Plugin 7.7.1
Shockwave Flash 11.3.300.257
Shockwave director 11.6.3r33
Silverlight 5.1.104.11.0
** New Environment where Firefox stops responding
MacBook Air 13" (mid 2012 series, purchased 6/12/2012)
(I've only included the deltas from the MacBook Pro)
OS rebuilt from erased disc 6/24/2012
OS X 10.7.4 (11E2705)
->MacBook Air (mid2012) Software Update 1.0 (seems to be the most significant change)
Flash Block 1.5.15.1 enable
Shockwave Flash 11.3.300.257 disabled
Shockwave director 11.5.9r620 disabled (different level, but disabled)

Curiouser and curiouser.
I have tried the new Flash on my MacBook Pro using Firefox 13.0.1 at the same USA Today Crossword site, puzzle 6/25/2012 and I do ''' not''' have this problem.
The variations I see are
* I used the same DMG to put Adobe Flash on both machines and they are both at 11.3.300.257, 11.3 r300
* I used the same DMG to put Firefox 13.0.1 on both machines
* The MacBook Pro is 15" (late 2011) OS X 10.7.4 build 11E53
* The MacBook Air is 13" (June 2012) OS X 10.7.4 build 11E2705
* Both are the latest available OS X levels for their respective platforms.
* Both platforms have been built from erased discs and Apple recovery discs within the last few weeks. (The Air was rebuilt yesterday, 6/24).
* The OS X 10.7.4 software is at different build levels and additional software has been installed to support the Air.
* I have Shockwave Director 11.6.3r633 installed on the MacBook Pro
My findings:
* On the MacBook Pro, Firefox at the specified Flash site work as advertised
* On the MacBook Air, Firefox at the same flash site stops respondings and must be force quit.
Open questions:
* Must I have Shockwave Director also installed?
* Does the OS X software build level have an effect of some sort?
* Does the model series of the MacBooks - late 2011 and June 2012 - affect the problem. The Air has only been available in the within the last few weeks and I ordered it the day it became available.
Does the pointing circle become "shift one left" or "shift one right"?

When attempting to delete the complete "Browsing & Download History" Firefox stops responding.

Since I had not deleted my browsing history in a few months I attempted to do so today. Firefox stopped responding. After waiting around 10-15 minutes I ended the process and attempted to delete everything from "today" and it worked. I then, one by one, deleted everything for "all times" except "Browsing & Download History", and it all worked. Now all that is left is to delete this, but every time I try to delete it, and nothing else, Firefox stops responding.

How much history items do you have if the check that in the History Manager?
If there are too many then try to clear them month by month or in case you do not care to lose all history delete the places.sqlite file in the Firefox profile folder (Firefox will rebuild the bookmarks from the most recent JSON backup).
You can check for problems with the places.sqlite database file in the Firefox profile folder.
*http://kb.mozillazine.org/Bookmarks_history_and_toolbar_buttons_not_working_-_Firefox
*https://support.mozilla.org/kb/Bookmarks+not+saved#w_fix-the-bookmarks-file

Firefox stops responding when starting

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