Yosemite installed, Firefox no longer opens, even in Safe Mode

This evening I upgraded to Yosemite. Now Firefox no longer opens, even in Safe Mode. If I try to open FF, I receive a Mozilla Crash Report. I uninstalled and reinstalled FF, made no difference. Can anyone help?

This is the crash report. I do not understand it.
AdapterDeviceID: 0x 166
AdapterDriverVersion:
AdapterVendorID: 0x8086
Add-ons: gmailwatcher%40sonthakit:1.61,%7B03B08592-E5B4-45ff-A0BE-C1D975458688%7D:1.0,%7 B1395baf2-3aa6-4d0f-83d6-1d9b66a9420d%7D:0.9.5,%7B3C9A65A6-9563-4485-BA4A-4BCD69 8BCFB4%7D:7.0,%7B5bfebbd0-9bef-4522-8823-523aeda5f2dc%7D:2.1,%7B8b86149f-01fb-48 42-9dd8-4d7eb02fd055%7D:0.26,copyplaintext%40teo.pl:1.3.2,autoscrollhelper%40tec hsmith.com:1.9.6,%7B4cc4a13b-94a6-7568-370d-5f9de54a9c7f%7D:2.7,socialfixer%40ma ttkruse.com:10.6,%7B195A3098-0BD5-4e90-AE22-BA1C540AFD1E%7D:4.2.0.0,%7B0545b830- f0aa-4d7e-8820-50a4629a56fe%7D:24.9,%7Bdc572301-7619-498c-a57d-39143191b318%7D:0 .4.1.5.2,ClassicThemeRestorer%40ArisT2Noia4dev:1.2.5,%7B972ce4c6-7e08-4474-a285- 3208198ce6fd%7D:33.0,extension%40321youtube.com:1.3,%7B146f1820-2b0d-49ef-acbf-d 85a6986e10c%7D:0.1.9.2,firefox%40gmelius.com:5.7.7.12,jid1-UXDr6c69BeyPVw%40jetp ack:0.8.1
BuildID: 20141011015303
CrashTime: 1413609621
EMCheckCompatibility: true
Email: EventLoopNestingLevel: 1
FramePoisonBase: 00000000f0dea000
FramePoisonSize: 4096
InstallTime: 1413386076
Notes: AdapterVendorID: 0x8086, AdapterDeviceID: 0x 166
ProductID: {ec8030f7-c20a-464f-9b0e-13a3a9e97384}
ProductName: Firefox
ReleaseChannel: release
SecondsSinceLastCrash: 1418
StartupTime: 1413609618
Theme: classic/1.0
Throttleable: 1
Vendor: Mozilla
Version: 33.0
useragent_locale: en-US
This report also contains technical information about the state of the application when it crashed.

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Firefox crashes on opening even in safe mode so I can not adjust any settings - Crash ID: bp-6c9dc360-32db-4a34-968b-9474f2121230.

I have a 64 bit windows computer running Windows 7. For the past few months Firefox has been crashing on opening - occasionally opening on my husband's profile but not mine. I am now using IE9 running as administrator but would prefer to use Firefox.
I can not adjust any of the settings, plugins etc as I can not open the program at all. After the first attempt I have go to the task manager and stop firefox.exe. Then on my next opening attempt I get the error messages again. I have sent off numerous crash reports to Mozilla.
cheers
Sharon Beeston
Australia

That looks like a problem with a component of your Nvidia display driver: [@ @0x0 | nvd3dum.dll@0x3a7434 ] 
I'm not sure how to fix this as an internet search on this file doesn't give any real solutions.
First make sure that you have the latest drivers for your graphics display card. 
If it started after an update of those drivers the see if you can role back to the previous version of the drivers.

Firefox crash upon opening, even in safe mode

Got rid of old personal info
Re-installed multiple times including shut down after
Browser initialized, crashes, submit report... rinse and repeat

Hello btpisch, you crashed report is malware related, you can try these free programs to scan for malware, which work with your existing antivirus software:
* [http://www.microsoft.com/security/scanner/default.aspx Microsoft Safety Scanner]
* [http://www.malwarebytes.org/products/malwarebytes_free/ MalwareBytes' Anti-Malware]
* [http://support.kaspersky.com/faq/?qid=208283363 TDSSKiller - AntiRootkit Utility]
[http://windows.microsoft.com/MSE Microsoft Security Essentials] is a good permanent antivirus for Windows 7/Vista/XP if you don't already have one.
Further information can be found in the [[Troubleshoot Firefox issues caused by malware]] article.
Did this fix your problems? Please report back to us!
thank you

After firefox 18.0.1 update firefox will not open even in safe mode?

I updated firefox and it wouldnt open. i uninstalled twice with no luck. crashed twice before the update yesterday now it wont open at all

[[Firefox 18 crashes on startup due to malware - how to fix]]

I have uninstalled and reinstalled and Firefox for windows 7 will not open. There is no error message--it just doesn't open, even in safe mode. What do I do?

My computer is set to auto update for Windows 7 Home Premium and for Microsoft Office Professional Plus 2010. I am also running Norton 360. There was a major update for Office on 12/10/14 that seems to be when my problems started. This month, every time my updates have caused a reboot, Mozilla has failed to open. I have uninstalled it and reinstalled it several times, and it has only lasted a day or two before it crashes again. This last time it will still not open. All the instructions to troubleshoot seem to be based on the idea that the program is open and just has issues. I can't even get it to open up in Safe Mode.
I have tried to reinstall, and it says that it will launch automatically when the install is complete, but it is not working. Since Norton scans every download before it runs, I'm not certain if that is where the problem is since I never get the window that shows the step by step installer for Firefox.
What do I need to do?

Certain Firefox problems can be solved by performing a ''Clean reinstall''. This means you remove Firefox program files and then reinstall Firefox. A clean reinstall is not the same as a regular reinstall performed using the built in installer. Please follow these steps:
'''Note:''' You might want to print these steps or view them in another browser.
#Download the latest Desktop version of Firefox from [https://www.mozilla.org mozilla.org] (or choose the download for your operating system and language from [https://www.mozilla.org/firefox/all/ this page]) and save the setup file to your computer.
#After the download finishes, close all Firefox windows (or open the Firefox menu [[Image:New Fx Menu]] and click the close button [[Image:Close 29]]).
#Delete the Firefox installation folder, which is located in one of these locations, by default:
#*'''Windows:'''
#**C:\Program Files\Mozilla Firefox
#**C:\Program Files (x86)\Mozilla Firefox
#Now, go ahead and reinstall Firefox:
##Double-click the downloaded installation file and go through the steps of the installation wizard.
##Once the wizard is finished, choose to directly open Firefox after clicking the Finish button.
More information about reinstalling Firefox can be found [[Troubleshoot and diagnose Firefox problems#w_5-reinstall-firefox|here]].
WARNING: Do not use a third party uninstaller as part of this process. Doing so could permanently delete your [[Profiles|Firefox profile]] data, including but not limited to, extensions, cache, cookies, bookmarks, personal settings and saved passwords. These cannot be easily recovered unless they have been backed up to an external device! See [[Back up and restore information in Firefox profiles]]. 
Please report back to say if this helped you!
Thank you.

I changed Java settings and now Firefox crashes as it opens, even in safe mode; how can I fix this?

I was trying to change settings to access the comments section of Slate.com. Right or wrong, I changed a Java setting from -1 to 2. The setting was in about:config and I believe it involved some sort of max. As I cannot open anything, I am not sure.
When I made the change, firefox crashed immediately, Every time I have tried to reopen, even in safe mode, it immediately crashes again and will not reopen.

Hi pternagy,
Sorry you are having problems.
For future reference. Those of us that mess directly with about:config soon learn how to recover from mistakes and what it is sensible to backup. Occasionally backing up your entire profile for instance can be useful and would have probably given you a quick solution of copying over the file from that backup.
*[[Back up and restore information in Firefox profiles]]
Ok on to the subject of trying to get Firefox back as it was:
Find your profile and the file ''prefs.js'' and rename that. (The renamed file is a potentially useful backup.) Firefox is then forced to regenerate the file and will reset your preferences to the default. You can then re open and use Firefox. Next try to get it back to normal.
Trying to manually edit the file ''prefs.js'' is normally a bad idea. However if it is a single pref change it may be possible to directly edit the prefs.js file (whilst Firefox is closed) to get everything back to how it was before . You have the renamed file to work with. Probably best to test all this out in a new additional profile then you only break additional test profiles not working profiles essential to Firefox.
These articles should help you:
* http://kb.mozillazine.org/Prefs.js_file
* [[Reset Firefox preferences to troubleshoot and fix problems#w_solution-2-delete-firefox-preference-files]]_solution-2-delete-firefox-preference-files
*[[Profiles - Where Firefox stores your bookmarks, passwords and other user data#w_finding-your-profile-without-opening-firefox]]#w_finding-your-profile-without-opening-firefox
* http://kb.mozillazine.org/Using_multiple_profiles_-_Firefox
Please post back with how you get on and whether you need any extra help.
Good Luck.

After a firefox "upgrade" was installed automatically, Firefox will not start, even in Safe mode. Clicking on the icon does nothing

after a firefox upgrade was auto-installed, firefox no longer will launch. clicking on the icon does nothing. can't start in safe mode
== This happened ==
Not sure how often
== firefox upgrade auto-installed ==
== User Agent ==
Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10_4_11; en) AppleWebKit/531.21.8 (KHTML, like Gecko) Version/4.0.4 Safari/531.21.10

You can try to disable the Java Quick starter and the Java Console extension in the Control Panel > Java.
Control Panel > Java > Advanced tab > Miscellaneous >Java Quick Starter (disable)
You can also disable the Java plugin in Firefox: Tools > Add-ons > Plugins
See [[Troubleshooting extensions and themes]]
See [[Troubleshooting plugins]]

Firefox crashes at startup even in safe mode after upgrade to version 7.0.1

Firefox crashes at startup after an upgrade to version 7.0.1
It crashes on start-up even in safe mode.
I have tried a complete un-install and reinstall but choose to keep all my settings (eg bookmarks) etc as I don't want to loose my bookmarks.

Your crashreport is 
https://crash-stats.mozilla.com/report/index/bp-24b848e4-7d2a-4cf1-b0b0-31ccd2111021 
Firefox 7.0.1 Crash Report [@ mozcomp.dll@0xab51 ] 
Startup crash in mozcomp.dll with Oracle Enterprise, F5 Networks, Passlogix V-GO, IBM Tivoli Access Manager SSO 
See related Bug [https://bugzilla.mozilla.org/show_bug.cgi?id=680927 680927] for more info 
The likely problem is use of certain Oracle etc software, the developer Oracle being aware of the problem and working on a fix. Meanwhile there is a registry hack as a potential workaround, or the simpler workaround of downgrading temporarily to firefox 3.6.23.

Windows 8.1 Outlook 2010 won't open even in safe mode after 4/5/2014 update

There was an update today, 4/5/2014 for Windows 8.1. I was able to open Outlook 2010 prior to update. Ever since the update, I cannot open Outlook 2010, not even in Safe Mode. I need help!!!

Hi,
Make sure there's no Outlook process in Task Manager prior to you open it.
Then we can check if it can start properly in Clean Boot to determine whether background programs are interfering with Outlook:
http://support.microsoft.com/kb/929135
If you still can't open Outlook, consider uninstalling the latest update from Control Panel -> Programs and Features -> View installed updates.
Regards,
Melon Chen
TechNet Community Support

Firefox 14.1 hangs, even in safe mode

Always hangs within a few minutes, even in safe mode. Have uninstalled and deleted directory and rebooted and reinstalled. Nothing helps. Now trying the Beta 15 version and that hangs too. Chrome and IE work fine and previous version of Firefox worked fine.

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 crashed and then wouldn't open even in safe mode. I installed Ver 6.1 and still FF won't open.,

Firefox crashed unexpectedly and wouldn't restart. I rebooted and tried both regular start and safemode w/o add-ons and it still won't start. I then upgraded to Ver 6.1 and still won't open in safe mode. I'm using Vista 32 bit.

Firefox crashed unexpectedly and wouldn't restart. I rebooted and tried both regular start and safemode w/o add-ons and it still won't start. I then upgraded to Ver 6.1 and still won't open in safe mode. I'm using Vista 32 bit.

Upgraded to lucid lynx-amd64, firefox will no longer start, even in safe mode, terminal reports segmentation fault.

Upgraded to Ubuntu lucid lynx 64bit platform, Firefox will no longer start, even in terminal safe mode - terminal reports Attempting to load the system libmoon Segmentation fault. Thunderbird works fine. Un-installed/re-installed to no success.
== User Agent ==
Mozilla/5.0 (X11; U; Linux x86_64; en-US) AppleWebKit/533.2 (KHTML, like Gecko) Chrome/5.0.342.9 Safari/533.2

I completely uninstalled everything associated with firefox in synaptic package manager, then reinstalled the latest version of firefox again.
Evidently one of the add-ons was preventing firefox from opening, not sure which one though. I hope this will help someone else. Firefox is working now.

My new version of Firefox crashes as soon as it opens, even in safe mode, at the 'restore session' page. How can I get that session back?

I updated to the newest version of Firefox and restarted the internet. When it reopened the browser, it had the 'about session restore' tab open, but when I clicked on it, it crashed. I've restarted the computer three times to no avail.
The browser opens, then says 'Not Responding' before you can click on anything, then crashes.
The Mozilla Crash Reporter appears, and I click to restart (or quit - same results) then it suggests to open in safe mode, which I do, but the same thing happens repeatedly and I get nowhere.
It wasn't even generating a crash report but finally one went through to my email: bp-0a80049a-6643-452d-b3b2-d8c622130823.
I want to restore my previous version, as I had tabs open that I need to go back to.
Could you please advise me how to proceed?
Thank you.

I don't have a good sense of what is going wrong.
Was Firefox stable in step 3 -- open with no sessionstore.js file and then exit?
If that was stable, it might be easiest to cull the open URLs from your sessionstore.js file and re-open the most important ones manually. You will lose the ''detail'' of your session on those pages (e.g., data you had entered into a form), but if that's okay, it might be the next step.
I found a script on mozillaZine that will extract URLs from the sessionstore.js file; I just changed the formatting of the output. To run the script:
(1) Return to your profile folder and rename sessionstore.js to sessionstore.old again, then copy it to a convenient location
(2) Start Firefox (it should be in a new session)
(3) Open the following link, select all (Ctrl+a), copy (Ctrl+c) to copy the script to the clipboard: http://dev.jeffersonscher.com/sessionstore_reader.txt
(4) Open the <s>Error Console</s> Browser Console (Ctrl+Shift+j), click next to <s>Code</s> the caret (>>) and paste, then press Enter <s>or click Evaluate</s>
(5) A file selection window should appear. Navigate to the convenient location and open sessionstore.old from there.
(6) As long as the file is not corrupted, a new tab should open with a list of all the URLs the script found in the file. You can save this page for future reference if desired. Also, you can close the <s>Error</s> Browser Console now.

Upgraded to Firefox 8, but now it won't open-- even in Safe Mode. It crashes upon opening.

My husband installed Firefox 8 today. Since then, he can't open Firefox - it tries to open but immediately crashes and asks to send an error report. He's researched your help pages, tried to load Firefox in Safemode, but same thing occurs. Has rebooted numerous times. He "Restored to an earlier time in the day" using Norton GoBack after uninstalling Firefox and then reinstalled it. Same exact problem occured. The restore option is no longer available.
He using a Dell PC with Windows XP3. It's not on this PC - His PC is now not working well, so if you have specific questions about his OS/add-ons, let us know. Thanks

I had the exact same problem. If you happen to have an old version of Roboform installed try closing it and then running FF. Roboform was making mine crash to the error report every time.
The newest version of Roboform does work in FF8.

Firefox hangs on startup (even in safe-mode) and no sessionstore.js file to edit.

After a system restart due to Firefox seeming to act strangely, it hangs as soon as I open it. The tab says "Connecting..." but it eventually just stops responding.
Safe-mode doesn't work either, but private browsing is okay (which obviously I'd rather not use primarily.)
I had a few tabs open and I suspect one of them might be a pain for session restore to open, so I figured I would go try to snag it from the sessionstore.js but unfortunately I apparently don't have one.
I tried enabling the "ask before restoring tabs" feature but that didn't help either.

'''Edit: I used private browsing to change the settings to open a blank page on startup and it worked perfectly. Thank you so much! :)'''
Thanks for the quick reply!
Will changing that setting work from either private browsing or another profile? Because my default profile just freezes instantly, can't even get to options. :/
The URL I thought might be causing problems was http://brennadaugherty.tumblr.com/ ... I have no idea why it would. I also had http://brennahaspixels.tumblr.com/ open and since that has tons of little images on it that seems more likely but the problem started with that first URL.
I actually started a new profile and transferred everything else over to it and it works fine, but it would be nice to figure out what happened to the first. :/

Yosemite installed, Firefox no longer opens, even in Safe Mode

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