Firefox crashes at startup, can't open in safe mode either

Problem started yesterday, can't open firefox at all.

We're sorry to hear that your Firefox seems to be crashing when you open it. Please perform the following steps to give us a crash report ID that helps us find out more about the cause of the crash.
#Press the following shortcut to get a Run window: [Windows] + [R]. This should bring up a window that contains a text field.
#In that text field, enter %APPDATA% and press Enter. An explorer window should open.
#From that explorer window, double-click on the ''Mozilla'' folder, then double-click on ''Firefox'' and then on ''Crash reports''. Double-click on ''submitted''.
#Now, you should see a list of files that contain reports. Go to ''View'' > ''Arrange Icons by'' > ''Modified'' to get the most recent files at the top of the window.
#Open the most recent 5 files with a text editor and copy the IDs.
#Paste each ID with '''bp-''' into the reply window on the forums.
Thanks in advance!
You can find more information and troubleshooting steps in the [[Firefox crashes]] article.

Similar Messages

Firefox crashes on Startup (IN and OUT of Safe Mode)

Hey. I was messin with some privacy settings in the Options menu. I selected the option for FF to clear all cache, cookies, history and the like on browser close. After finishing that I could not start up FF again.

What error messages are you getting ?
I wonder if it was an old outdated version of Firefox ?
First of all look for running Firefox processes firefox.exe or plugincontainer use the task manager to kill those then after a couple of minutes try again to start Firefox in safe mode.
* See [[Firefox hangs or is not responding - How to fix]]
* [[Troubleshoot Firefox issues using Safe Mode]]
If that fails then re name the ''prefs.js'' file to something else like ''prefs.js.old1'' because that will reset all your preferences to default settings. (If you have a lot of customised settings we can work with the old file to try to reverse just the very recent change that caused the fault, especially if, when you view that file you remember what it was you changed)
* See [[Reset Firefox preferences to troubleshoot and fix problems#w_solution-2-delete-firefox-preference-files]]#w_solution-2-delete-firefox-preference-files

Can not open in safe mode

I can not open in safe mode. It launches Utilities instead.
I tried to reinstall Mavericks but it stalled for over an hour.
I found a loose kernel in my HD fielder and deleted it.
Anny ideas? Thanks.
Allan

Using Safe Mode. What happens with a normal boot - same thing? If so then your startup volume needs to be reformatted and you need to reinstall OS X.
Install or Reinstall OS X 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.
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Erase the hard drive:
1. Select Disk Utility from the main menu and click on the Continue button.
2. After DU loads select your startup volume (usually Macintosh HD) from the
      left side list. Click on the Erase tab in the DU main window.
3. Set the format type to Mac OS Extended (Journaled.) Optionally, click on
      the Security button and set the Zero Data option to one-pass. Click on
      the Erase button and wait until the process has completed.
4. Quit DU and return to the main menu.
Reinstall OS X: Select Reinstall OS X and click on the Install button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible
           because it is three times faster than wireless.
This should install the version of OS X that you had installed.

Firefox 3.6 keeps crashing on opening. Can't open in safe mode, can't see crash logs. HELP please.

Firefox worked fine last night. No changes/downloads but today it keeps crashing when opening. I downloaded new 3.6 version for mac but same problem. Tried to open in safe mode by going to the terminal and typing /Applications/Firefox.app/Contents/MacOS/firefox -safe-mode but nothing happens. Tried to see my crash reports as per the mozilla (/Library/Application Support/Firefox/Crash Reports/submitted) but the folders don't exist.
Crash report reads:
Add-ons: {7b13ec3e-999a-4b70-b9cb-2617b8323822}:2.7.1.3,{972ce4c6-7e08-4474-a285-3208198ce6fd}:3.6.11
BuildID: 20101012104758
CrashTime: 1288214674
EMCheckCompatibility: true
Email:
FramePoisonBase: 00000000f0dea000
FramePoisonSize: 4096
InstallTime: 1287680805
ProductName: Firefox
ReleaseChannel: release
SecondsSinceLastCrash: 726
StartupTime: 1288214672
Theme: classic/1.0
Throttleable: 1
Vendor: Mozilla
Version: 3.6.11
This report also contains technical information about the state of the application when it crashed.

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 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.

Firefox crashes and I can't open it. I have done everything you have listed

Firefox crash reporter comes up every time I try to start it. It won't open in safe mode. I deleted firefox per your instructions including in the programs files. I restarted computer and downloaded firefox to my computer desktop. I reinstalled and now I can't get it to open at all. The firefox crash reporter just comes up. I like fire fox better than internet explorer but if someone can't help me I will have to use it.

Hello, i dont know if you installed the windows update, but if you installed the Windows Update, is te cause of the Mozilla Firefox crash.
I restored my system from before the upgrade and magic! It was the mistake, after you reinstall from 0 my Mozilla Firefox in Safe Mode only opens, and now opens normally.
Srry for my english. I have Windows 7 64 bits and the update in 16-17/07/2013
I Waiting for the solution, because windows update install the updates automatically.
Greetings

Firefox crashes on startup - will not open at all

I cannot open firefox at all; it crashes on startup. I have tried opening it holding shift, to attempt opening in safe mode.
I cannot update firefox because I cannot open it.

@embacy -> Do you have any single-sign on (SSO) extensions installed? Do you have Roboform installed?

Can't open in safe mode / clear cache because firefox is frozen

I tried to load a page that seems to have had a buggy embedded video ad, and now Firefox is stuck. It stops responding, but when I force quit and reopen, it opens the offending page again too, and it freezes again. I've tried restarting my computer, and reinstalling Firefox, and the problem keeps happening. I can't follow the advice I've seen here about opening in Safe MOde or clearing my cache, because Firefox freezes before I can do that. I there a way to do these from outside Firefox? I'm using Mac OS X 10.6.8 if that matters.
Thanks!

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 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.

Firefox crashes after upgrade and wont start in safe mode crash report is Crash ID: bp-4a1fc5e6-6afb-4c5b-9e4e-47ad12130514

I cannot open FF after an upgrade. The first time I tried to upgrade I had to cancel the upgrade before it had finished as I was called away. The second atttempt went to completion OK with no error reports. However, I cannot start FF. I can't try safe mode as if I try to open while holding shift key down the screen asking if I want to open in safe mode flashes by very quickly and goes straight to the crash screen. Ive tried deleting FF and reinstalling (without deleting profile) but same thing happens. I dont want to try deleting including profile as I dont want to lose my history and saved passwords.

Thanks for extremely fast reply. That makes sense as I downgraded to FF16 about a month ago as I was having problems with FF20. That was about the time my company took on the Websense security. FF16 has worked fine so do you think it will work if I go back to FF16? I would have to approach Websence via my company's IT support and they would probably say I shouldn't be using FF anyway!

While in Hotmail, Firefox crashed & now I can't open or delete messages, however, on the same computer-different account- my Hotmail works fine.

While a request to print a sent email was being executed (successfully), my attention was diverted away from the computer screen. When I returned, the Firefox "crash" notice was on the screen, but everything appeared fine so I didn't file a report. I exited Hotmail and later signed in and found out I can not open or delete any messages. I exited Hotmail, switched computer user accounts and opened my Hotmail under the computer's administrative account. Under the adm. account my Hotmail works without a problem. Switched back to my computer user account, signed in to Hotmail and the original problem still exists. What can I do to get Hotmail to work in my computer user account?

Clear the cache and the cookies from sites that cause problems.
"Clear the Cache":
* Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"
"Remove Cookies" from sites causing problems:
* Tools > Options > Privacy > Cookies: "Show Cookies"
Start Firefox in [[Safe Mode]] to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode
Thunderbird

Firefox crashes! I CAN'T OPEN IT AT ALL!

Firefox will not open ever since my computer shut down unexpectedly, even in safe mode. All my website information in of firefox and I can't remember some of the websites I need to access for school.

See:
*http://kb.mozillazine.org/Firefox_crashes
*https://support.mozilla.com/kb/Firefox+crashes
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
*https://support.mozilla.com/kb/Recovering+important+data+from+an+old+profile

Firefox crashes on opening and will not open in safe mode either

firefox crashes as soon as window appears and same in 'safe mode' mac osx 6.2.4
== User Agent ==
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_3; en-us) AppleWebKit/531.22.7 (KHTML, like Gecko) Version/4.0.5 Safari/531.22.7

Add-ons: {972ce4c6-7e08-4474-a285-3208198ce6fd}:3.6.3
BuildID: 20100401064631
CrashTime: 1274739594
EMCheckCompatibility: true
Email: [email protected]
FramePoisonBase: 00000000f0dea000
FramePoisonSize: 4096
InstallTime: 1274097386
ProductName: Firefox
ReleaseChannel: release
SecondsSinceLastCrash: 525200
StartupTime: 1274739562
Theme: classic/1.0
Throttleable: 1
URL: http://en-us.start3.mozilla.com/firefox?client=firefox-a&rls=org.mozilla:en-US:official
Vendor: Mozilla
Version: 3.6.3
This report also contains technical information about the state of the application when it crashed.

Firefox crashes upon start up in normal and safe mode

Can't open firefox in either mode, it immediately gives me a crash report pop-up

Did you try to download FF10 with another browser and install it over your current FF version?
Link to your CR: https://crash-stats.mozilla.com/report/index/e9c657f0-71ce-480b-a13f-2852c2120207

How do I fix this? "Firefox is unable to start correctly (0xc0000056)" I can't start in Safe Mode, either.

My Firefox does not open, at all. When I try to open i get the message that says "Firefox is unable to start correctly (0xc0000056)". I have tried to run the Firefox crash report, which also does not run. I'm unable to start in safe mode, also. All I get, is the above message...nothing else.

I'm not using that extension, so I do not know which files are used in addition to sessionstore.js and you need to check the profile folder yourself for suspect files.
This can be a problem with the file [http://kb.mozillazine.org/sessionstore.js sessionstore.js] in the [http://kb.mozillazine.org/Profile_folder_-_Firefox Profile Folder] 
Delete the files sessionstore.js and sessionstore.bak and any existing files sessionstore-##.js with a number in the left part of the name like sessionstore-1.js .
See http://kb.mozillazine.org/Session_Restore

Firefox will not start, will not open in safe mode, and still will not work after clean reinstall, Mac/OSX

One moment I was using Firefox the same as I always have. The only difference was that I changed the preferences to erase history when quitting Firefox. When trying to open the program again, it is immediately unresponsive. I attempted opening it in safe mode and a window will appear but never load, and Firefox remains unresponsive. I could not reset Firefox either. I deleted the application and re-downloaded Firefox, but it changed nothing. I am in OSX 10.7.4. Can anyone help?

Hello chillman4130, try to create a new profile(in case that you profile is corrupted), go (with closed firefox...... it is anyway) to /Applications/Utilities > Open the Terminal application > in the Terminal application, enter the following:
* /Applications/Firefox.app/Contents/MacOS/firefox-bin -p
Press Return
the above opens Profile Manager, if the profile manager open then see : [https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles#w_creating-a-profile Creating a profile]
then see: [https://support.mozilla.org/en-US/kb/Recovering%20important%20data%20from%20an%20old%20profile Recovering important data from an old profile]
http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox
thank you

Firefox crashes several times a day even in safe mode

Every every day I get a few crashes with Firefox. The scenario is always the same. Attached screenshot. I keep switching Shockwave Flash v11.2.202.451 and the Cisco OpenH264 codec to “never activate” but on restart from the crash they are found to have reactivated. I tried safe mode, and refreshed, with no improvement. I think it is related to video uplaying, youtube etc, but can't pin it down.
My OS is Ubuntu 14.04, Firefox 36.0.1 for Ubuntu.

As for it being out of date, I am sure that while there is a version 16 for Windows, the last version that works for FF on Linux is mine.
Funnily enough i haven't had a single crash today, maybe due to todays Ubuntu update.

Firefox crashes at startup, can't open in safe mode either

Similar Messages

Maybe you are looking for