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.

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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.

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.

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.

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.

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.

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.

Blue Screen of death - now can't load Windows (even in safe mode)

Last night laptop (Satellite L500 19Z; Win 7 64 bit) crashed whilst playing CIV4. Got a blue screen of death; before I had chance to read any of the error messages on it the machine rebooted.
It loaded windows in safe mode fine then, and informed me as it had loaded safe mode OK the problem will be related to some recently installed software and I should uninstall programs I'd installed until it would load normally. As it was late last night I shut down and thought I'd sort it in the morning (in retrospect this may have been a mistake ....).
Today, when the machine tries to boot up it attempts a Startup Repair; unfortunately this fails every time and it says "Startup repair has tried several times but still cannot detemine the cause of the problem"
I looked at the log it produces but it passes all the individual tests.
I also can't access the advanced options for system recovery & support, which appears on the Startup Repair dialog box as it demands I be logged in, which apparently I'm not (presumably as the machine never got to the windows login screen before trying the startup repair). The error message reads "you must be logged in to access system recovery options. If you are having trouble logging in please contact your computer administrator for assistance. please click OK to restart the computer."
I've had a go at booting into the various advanced options (safe mode, safe mode with command prompt etc. but the outcome is the same).
I also tried the Repair your Computer option from the advanced boot options screen, but after the screen where it asks you to choose the language and keyboard, I get the same login error mentioned above.
Is there a way to repair or even run the hard disk based windows recovery (haven't got the recovery DVD with me as I'm away from home for a couple weeks) without logging into windows? I would have expected there to be but have yet to figure out how to do it.
(there are no disks in the disk drive, no other devices attached to the laptop - I've tried it with mains power and with the battery and have not noticed any differences)
Thanks
James

Normaly the reinstall data is on a separate part on your HD, not in Windows.
The register is only used for Windows.
If it doesn't work you can always try to reinstall from a DVD later.
It does mean all your data on C:\ will be gone. If you can hook your HD on an other PC you can try to safe your work with a recover prog.

MacBook Pro running updates won't startup, even in Safe Mode

I ran some software updates on my MacBook Pro running Lion and when it restarts it has a striped screen and says 'You need to restart your computer.' It won't even allow me to restart in Safe Mode. Any ideas?

Install or Reinstall Mavericks or Mountain Lion from Scratch
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
OS X Mavericks- Erase and reinstall OS X
OS X Mountain Lion- Erase and reinstall OS X
OS X Lion- Erase and reinstall Mac OS X
Note: You will need an active Internet connection. I suggest using Ethernet if possible
because it is three times faster than wireless.

When I close Firefox, it closes on my desktop, but when I try to open it again, it appears to think that it is already open and will not open--even in safe mode.

The only way I seem to be able to reopen Firefox is to reboot the computer, which, needless to say, is not a very helpful choice. Is this a common problem? I am running Windows 7.

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

Firefox 3.5.9 won't open even in safe mode i get error message ''mozilla crash reporter'' how do i fix this?

i cant open firefox anymore! :( do i need to uninstall it?
== User Agent ==
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; GTB6; .NET CLR 1.0.3705; .NET CLR 1.1.4322; Media Center PC 4.0; Media Center PC 2.8)

i cant open firefox anymore! :( do i need to uninstall it?
== User Agent ==
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; GTB6; .NET CLR 1.0.3705; .NET CLR 1.1.4322; Media Center PC 4.0; Media Center PC 2.8)

OS 10.2 Won't boot even in safe mode

I was having problems with the Finder on my work i-book so reinstalled the OS. The first disc was fine, though the second wouldn't be recognised. Since it said that this disc could be installed later, I quite the installation and rebooted.
I went to the log-in screen and discovered that my password would not be recognised.
So I used the install disc again to reset the passwords, though didn't actually do the installation again (and since it wouldn't let me shut down properly within the Installer I had to reset the computer by just holding down the power button).
Upon restarting the password now worked, though when I logged in I got taken into Darwin. Since I didn't really know what to do I restarted again by holding down the power button.
And now nothing happens. I get to the grey screen where the apple logo is visible and the little spinny icon goes round but nothing happens after that; I've tried with and without the install discs installed (holding down c obviously) and have also tried to do a safe boot following apple's instructions with no joy.
Anyone got any further suggestions?
Many thanks,
t

Sometimes when the 'C' key doesn't work, you can try the Startup Manager described below:
http://docs.info.apple.com/article.html?artnum=106178
Hope this helps.

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]]

Firefox crashes immediately upon opening, even in safe mode

Completely uninstalled and reinstalled twice. There's no add-ons or any extras whatsoever installed.

Create a new profile as a test to check if your current profile is causing the problems.
See "Basic Troubleshooting: Make a new profile":
* https://support.mozilla.com/kb/Basic+Troubleshooting#w_8-make-a-new-profile
There may be extensions and plugins installed by default in a new profile, so check that in "Tools > Add-ons > Extensions & Plugins" in case there are still problems.
If that new profile works then you can transfer some files from the old profile to that new profile, but be careful not to copy corrupted files.
See:
* http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox
See:
* http://kb.mozillazine.org/Firefox_crashes
* https://support.mozilla.com/kb/Firefox+crashes
If you have submitted Breakpad crash reports then post the IDs of one or more Breakpad crash reports (bp-xxxxxxxx-xxxxxxxxx-xxxx-xxxxxxxxxxxx). You can find the IDs of the submitted crash reports on the about:crashes page. You can open the about:crashes page via the location bar, like you open a website.
See:
* http://kb.mozillazine.org/Breakpad (Mozilla Crash Reporter)
* https://support.mozilla.com/kb/Mozilla+Crash+Reporter
* https://developer.mozilla.org/en/How_to_get_a_stacktrace_for_a_bug_report

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

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

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