Firefox won't open in normal or safe mode.

I get a crash report each time when I try to open it normally, nothing happens when I type in the extension for safe mode. Because I can't open safe mode, the Mozilla troubleshooting guideliens cannot help me. I'm working from Windows vista, have all current updates to Windows, and have scanned my computer.

To start in Firefox Safe Mode, hold down the Shift key while clicking on the Firefox desktop icon. To exit Firefox Safe Mode, exit from Firefox (Firefox button > Exit or File > Exit), wait a few seconds (10-30), click the desktop icon to restart Firefox.
NOTE: Establish a habit of exiting/closing Firefox with Firefox button > Exit or File > Exit to allow an orderly shutdown of Firefox and closing of all of the files that Firefox has open.
#Stop the Firefox process:
#*[http://kb.mozillazine.org/Kill_application Mozillazine - Kill application]
#*Windows 7 users click [http://www.techrepublic.com/blog/window-on-windows/reap-the-benefits-of-windows-7s-task-manager/2576 here]
#*Mac users: http://techheavy.com/2011/02/the-mac-task-manager/
#Why Firefox may hang:
#*[http://support.mozilla.org/en-US/kb/Firefox+hangs Firefox hangs] (see Hang at exit)
#*[http://kb.mozillazine.org/Firefox_hangs Firefox hangs (Mozillazine)] (see Hang at exit and Closing Firefox properly)
#*[https://support.mozilla.org/en-US/kb/Firefox+is+already+running+but+is+not+responding Firefox is already running but is not responding]
#Use Firefox Safe Mode to find a problem with an Extension or Plugin:
#*Don't check anything when entering Safe Mode, just continue
#*If the problem does not occur in Safe Mode it is probably an Extension or Plugin causing the problem
#*See:
#**[[Safe Mode]] and [http://kb.mozillazine.org/Safe_Mode Safe Mode (Mozillazine)]
#**[http://support.mozilla.org/en-US/kb/Troubleshooting+extensions+and+themes Troubleshooting extensions and themes]
#**[http://support.mozilla.org/en-US/kb/Troubleshooting+plugins Troubleshooting plugins]
#**[http://support.mozilla.org/en-US/kb/Basic+Troubleshooting Basic Troubleshooting]
'''If this reply solves your problem, please click "Solved It" next to this reply when signed-in to the forum.'''
Consider updating Firefox; your version is 9.0.1 --> current version is 10.0.1
*See --> https://support.mozilla.org/en-US/kb/Updating%20Firefox

Similar Messages

After installing 3.6 FF won't open even in the safe mode, I click on the icon and nothing happens at all

I installed 3.6 and now FF won't open even in the safe mode. I restored my computer setting back to where I was running 3.5.13 but it still doesn't work...some files must have been deleted when I upgraded that weren't put back even when going back to the older version but I have no idea what to look for or what to do even if I find them. Can you please help me?

Using system restore can create problems as well as solving them. I have seen system restore destroy a Firefox setup. The installation may be OK but to be sure perform a clean install
# [http://kb.mozillazine.org/Uninstalling_Firefox Uninstall Firefox]
# Delete the Firefox [http://kb.mozillazine.org/Installation_directory Installation directory], default location C:\Program Files\Mozilla Firefox\
# Download the latest version from http://www.mozilla.com/ and install it
If Firefox still does not start, try creating a new profile folder. Firefox stores user data in a profile folder, creating a new profile will show if the problem is with the old profile. For how to do that see [http://kb.mozillazine.org/Creating_a_new_Firefox_profile_on_Windows creating a new Firefox profile on Windows].
If the new profile works, you can copy selected data such as bookmarks and passwords to the new profile. For details see [http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox transferring data to a new profile]. Do not copy the preferences file, and it is best to re-install any add-ons.

Updated. See 3 new Qs at bottom...After XP system restore back to earlier FF version, FF won't open, it's in safe mode. How can it be opened out of safe mode? Can precious, previous History be retreived?

THIS IS A RE-POST OF THE QUESTIONS previously posted, PREVIOUSLY POSTED, now adding a request that 3 new summary questions--at the bottom--be answered.
NOTE: I specifically need answers to the 3 new, summary Qs now posted at the bottom of the Sequence of Events:
Sequence of events:
1) I was using Version 3.6.22 and I needed to
upgrade to Version 6.0.
2) Before beginning, I set a restore point in Windows XP so that in case I did not like 6.0, I could go back to the restore point which contained
3.6.22 and I would stick with that version.
3) I did not uninstall 3.6.22 but loaded 6.0 on top of it, so to speak, thinking that would save my history and other features such as bookmarks. Opening 6.0 I was horrified to see it did not contain my history files!...so I had to go back to 3.6.22.
4) After returning back to the restore point that contained 3.6.22, on the desktop, clicking on the Firefox icon, it won't open.
5) I went to desktop, in lower left clicked Start, then clicked Programs, and yes Firefox is there as an installed program, however the tag reads Mozilla Firefox (safe mode)...so it's in safe mode and won't
open. What now?---~~~~~(end of original post).
HERE ARE THE EXACT 3 Qs I need answered:
1) Can I retreive and save MY PRECIOUS HISTORY from somewhere? Can I force new 6.0 to find and retreive it from 3.6.22) And how would I do that? That's the reason I'm trying to go back to 3.6.22, because it likely still contains my history which does not appear in new install of 6.0?
2) As it stands, go back to previous state now has Firefox 3.6.22 in safe mode. It won't open after XP went back to previous state containing 3.6.22. File tree says Firefox is installed but is now in safe mode. So Q2 is: Can I open Firefox out of safe mode and if so how?--I'd be done because it likely still contains my history.
And if not, can I get retreive my history from it somehow? Or somehow get 6.0 to rediscover it hidden somewhere (Show All History in new 6.0 install was empty).
3) Do I have to give up on retreiving my history even though it's got to be somewhere in my computer? I did not uninstall anything.
If my history cannot be retreived, then I have no choice but to proceed in life with 6.0 without my precious History, a huge store of info and loss of data for me, big time!
FIREFOX HELP NEEDS TO TELL PEOPLE HOW TO SAVE THEIR HISTORY WHEN THEY UPGRADE TO NEW VERSION and whether or not to uninstall previous FF version first. Please pass this urgent advice on to Firefox techs. I can't even figure out how to email THEM!!!!
Thank you all out there in cyberspace whereever you may be!
(P.S. Cor el, thanks for your reply...how do I reach you by email link does not work....)

What in particular didn't you like about Firefox 6?
You can undo a lot of changes, either via changing settings or prefs on the about:config page or via extensions.
*https://support.mozilla.com/kb/common-questions-after-updating-firefox
Do a clean reinstall of the version that you want to use.
Download a fresh Firefox copy and save the file to the desktop.
*Firefox 3.6.x: http://www.mozilla.com/en-US/firefox/all-older.html
*Firefox 6.0.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 or you lose your bookmarks and other data in the profile folder.
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

Firefox never opens in normal or safe mode. How do I get it to work?

Just out of nowhere Firefox crashes which is usual for me. I try to open it and nothing happens. I open Task manager to check and firefox.exe goes to 16,oookb before dissapearing and never loads. I tried Safe mode and it always crashes and crash after the other. I reinstalled and system restore nothing worked. I changed the name in in firefox.exe to firefox3.exe and still doesnt work. I try to run to go profile manager in but another crash. What do i do?

Do a malware check with a few malware scan programs. 
You need to use all programs because each detects different malware. 
Make sure that you update each program to get the latest version of the database before doing a scan.
* http://www.malwarebytes.org/mbam.php - Malwarebytes' Anti-Malware
* http://www.superantispyware.com/ - SuperAntispyware
* http://www.safer-networking.org/en/index.html - Spybot Search & Destroy
* http://www.lavasoft.com/products/ad_aware_free.php - Ad-Aware Free
* http://www.microsoft.com/windows/products/winfamily/defender/default.mspx - Windows Defender: Home Page
See also "Spyware on Windows": http://kb.mozillazine.org/Popups_not_blocked and [[Searches are redirected to another site]]
See also http://kb.mozillazine.org/Browser_will_not_start_up

Firefox won't start (not even in Safe Mode) on Windows 7 x64

I am Running Windows 7 x64 and Firefox 3.6.15.
Since the day before yesterday I am unable to start Firefox. Even in Safe Mode it just won't start.
I click the Firefox icon, the mouse cursor changes to indicate the computer is doing something. After 3 seconds or so the mouse cursor again changes back to its default state. Nothing else happens.
The Task Manager in Windows shows me that an instance of firefox.exe is running, but I see no Firefox window.
Then if I again click to open Firefox, another firefox.exe instance starts, but again I see no Firefox window.
There isn't even a warning about one instance of Firefox already running.
What I have tried:
I have uninstalled Firefox, removed all the Firefox files and folders from c:\users\username\AppData\Local and Roamning. I re-downloaded the 3.6.15 installation package and re-installed.
No change.

I have the same problem.
The only Firefox version working is the 64bit nightly build 6.0a1. No 32Bit version of Firefox works!. Chrome, Safari and Internet Explorer all work well.
Another Problem I have in this context is, that the Firefox Installer hangs in the tidy up step - even for the nightly 64Bit version. I have to kill the setup.exe process but the Installation seems to be completed.
Before my change to Win7 64Bit I had OpenText NFS Solo 14 installed on a 32Bit Windows7 and no Problems.
Is there a solution for this problem without uninstalling OpenText NFS Solo 14?
I need the NFS Server at work.

Firefox will not open in regular or safe mode?

I am unable to open Firefox regular or safe mode. Last night it began to update on its' own and crashed. I immediately tried to open Firefox but was unable to do so. Now after rebooting numerous times, I still can't open it. No parts of FF are running in the task manager. I don't know what to do. Can anyone help me please?

Do a clean reinstall.
Download a fresh Firefox copy and save the file to the desktop.
* Firefox 6.0.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

IMac G5 won't boot in normal and safe mode, but will from single-user mode

Hello everyone,
I'm quite new here, so I try to do my best if you have a question.
Yesterday, someone nearby me had a iMac G5 (Powermac8,1), and he sayd, that the computer sometimes will boot, sometimes not.
I did test it, I thought it was running fine, but when I played some music in iTunes, it was stuck on 9 seconds, and crashed (with a kernel panic). The guy also sayd, that there was nothing important on the computer, so a clean install was fine.
Now, the problem is, that it will not boot in normal mode (without anything pressed on boot), also it won't in safe mode (shift-boot), but it will, when I enter single-user mode, mount the hard drive and exit from single-user mode so it will go futher on booting. Sometimes it will not, and immediately gives you a kernel panic in single-user mode, but it will 90 percent of the time.
Then you've got another problem: when it's running in the normal desktop from single-user mode, it'll be stuck after some time again. If I look into the Kernel Panic file created, most times it's because of Spotlight indexing, so I disabled that.
He also gave me the disks (Apple Hardware Test and Extra Applications, and iMac G5 Mac OS X Install Disks 1-3) that came with the Mac. He sayd that I could use them, but I think he didn't test out the SuperDrive, because when I insert a disk, it will try to read, but it will make 2 same sounds, and quits after 10 tries, when it will spit the cd out. Also normal (audio) disks.
Also, I must hurry with the commands for mounting and exiting in single-user mode, or it will just not boot.
In all cases, after 30-45 seconds from pressing the power button, the fan will start blowing at full speed, and it will stop after the exit command in Single-user mode. That's weird.
I can't do anything with the SuperDrive, I can't normally boot in Mac OS X except for Single-user mode (but I don't think he would like to do that every time the computer boots up), and I have very limited time when Mac OS X arrived on the desktop.
When booting in Verbose mode, it will be stuck on this:
AppleSMU::PMU vers = 0x000d004c, SPU vers = 0x15, SDB vers = 0x01,
(and sometimes ends with a kernel crash by fsck_hfs)
Things I've tried (without any success):
- /sbin/fsck -fy (in single-user mode)
- Disabling Spotlight and mds
If you want some more information, feel free to ask!
Greetings
-MrYoranimo
PS: My main language is Dutch, so my English can be bad at some points.

Thank you for your support! This reply is a little bit late, because I was to the camping this weekend.
The only thing I sure do know, is that the iMac has a bad SuperDrive. That's one problem, but I don't really wanna use it, and you fix everything by Single-user mode and when I get to the desktop to test things and change stuff in the Preference Panes.
What also came to my mind was that there also is a problem with the videocard (driver), because sometimes when I boot into Single-user mode, I can see some white pixels which aren't supposed to be there. And when booting from SUM you can see that some of the colors are different and there are weird patterns on the screen.
I also tried to setup a NetBoot server on this computer (MacBook Mid 2010) with just Lion 10.7.4 on it, but I'm not that expert and I didn't really find the good posts on the Internet, although I tried it with the Server applications and both Server applications and DeployStudio. But I didn't succeed.
I don't really like buying a new FireWire hard disk or external FireWire dvd reader/writer, except if it has USB support, because my MacBook doesn't support FireWire, and I really wanna make use of it then.
If I know more or have fixed it, I will surely post again here with what I did to fix it (if no one else has posted here already ).

Firefox will not open at all (regular, safe mode, profile manager).

Firefox hung while using the Garmin import plugin on the mapmyrun.com page. No crash report was provided. After closing it, firefox will no longer open.
It appears in the taskmanager momently, but then disappears before any window appears. It never consumes more than 1004K of RAM before it disappears.
It will not open in regular mode, safe mode, or in profile manager. In each case the result is the same.
I rebooted. No change.
I reinstalled it over itself. No change.
I completely uninstalled it, and then reinstalled it. No change.
I deleted sessionstore.js and replaced it with sessionstore.bak. No change.
I can't open the profile manager.

You can do a disk check with the chkdsk.exe program.
If you run the chkdsk.exe program from a cmd.exe Command window then you can read the response from the chkdsk.exe program.
Open a cmd.exe window: 
Start > Run: cmd.exe <press Enter>
At the command prompt (>) type or Copy&Paste: chkdsk.exe /f /r <press Enter> (put a space before /f and /r)
If you get something like: Would you like to schedule this volume to be checked the next time the system restarts? y/n then answer the question with "Y" and close all programs and reboot the computer.
A possible cause is security software (firewall) that blocks or restricts Firefox without informing you about that, possibly after detecting changes (update) to the Firefox program.
Remove all rules for Firefox 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.
See:
* [[Server not found]]
* [[Firewalls]]
* http://kb.mozillazine.org/Browser_will_not_start_up

Firefox will not open even in the safe mode

Started with the addition of beta 4 where gmail would not open and it froze firefox. Added whatever the new addition was yesterday (3/14/11) and then firefox would not even open. Tried safe mode but it still will not open. Error message below

Do a clean (re-)install:
* Download a fresh Firefox copy and save the file to the desktop.
* http://www.mozilla.com/firefox/all-beta.html
* Remove the Firefox program folder before installing that copy of the Firefox installer.
* Don't remove personal data if you uninstall the current version.
* 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.
Create a new profile exclusively for the Firefox 4 version and create a desktop shortcut with -P "profile" appended to the target to launch that profile.
* http://kb.mozillazine.org/Testing_pre-release_versions
* http://kb.mozillazine.org/Creating_a_new_Firefox_profile_on_Windows
* http://kb.mozillazine.org/Shortcut_to_a_specific_profile
* http://kb.mozillazine.org/Using_multiple_profiles_-_Firefox

Firefox won't open because it says it is already open when it ain't

Firefox won't open because it says it is already open. It appears Firefox is operating in the background. Tried to remove it but we get the same message to log out of Firefox. For 10 years we have been using McAfee with all features but it does not detect any virus or malaware etc. It appears it might be a malaware problem but even using all the latest Microsoft fixes hasn't helped. We used Vista Business Professional with all the latest service packs updated. We use the latest version of Firefox as of up to around 3 weeks or so ago when this issue first appeared.

I suspect you need more expert help but here are a few things you can try.
If you can't open Firefox(double click on Firefox desktop icon) try Safe Mode - Hold down the Shift Key as you double click on the icon>don't check anything on the page that opens>continue. If Firefox opens and works in this safe mode go to Add-ons> Extensions and look for "Ask". Then look at Add-ons >Plug-ins and again look for "Ask" . Remove, delete,disable any Asks. If you do remove any, close Firefox. And try again in Normal Mode.
The Ask website has detailed instructions for removal but you need to find it on your computer and have your computer in working order.
If there is no sign of Ask and Firefox is working well in Safe Mode you should work your way through this -
https://support.mozilla.com/en-US/kb/Troubleshooting%20extensions%20and%20themes
Eventually you might need to grapple with About:Config and even your Windows Registry but I would recommend a complete uninstall and re-install before that. Unfortunately that often doesn't work.
That all sounds very daunting but taken step-by-step you might get lucky early.

Mac won't open pages in browsers. Chrome and Firefox won't open any pages - Safari will only open a selected few.

I've had some strange browser issues, with Conduit being added to Chrome (which I've tried to remove via the browser settings). Chrome will open my Gmail account but no ther pages. Firefox won't open anything. Safari opens a few pages (this forum thankfully) but is very selective.
Google is returning results to me via Google.es rather than Google.co.uk
I can use all browsers freely on other devices on home network (although Google.es has popped up on my iPhone now). I've run anti-virus software which hasn't picked up any problems. I've tried uninstalling Chrome and Firefox, but am unable to do so.
Any help or guidance would be really, really appreciated.
I'm running the most recent version of Mavericks on 2012 iMac.

Hi,
First of all click Safari/Reset Safari, next click Safari/Preferences/Extensions and turn off extensions. The re-test
If the problem persists, try using safari in safe mode:
Use this link to see how to do this:
http://support.apple.com/kb/HT1564
If Safari works ok in safe mode, then your problem points to something 3rd party related.
Have a look at this:
http://support.apple.com/kb/TS3230?viewlocale=en_US
I hope this helps

Firefox won't open on new installation

I have just installed arch 64 on this machine, and firefox won't open. I can't get any kind of feedback out of the process either. It just sits there, using hardly any cpu, but nothing happens.
ldd /usr/bin/firefox gives me no errors.
This is the output from gdb:
gdb firefox
GNU gdb (GDB) 7.5.1
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-unknown-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/bin/firefox...(no debugging symbols found)...done.
(gdb) c
The program is not being run.
(gdb) run
Starting program: /usr/bin/firefox
warning: Could not load shared library symbols for linux-vdso.so.1.
Do you need "set solib-search-path" or "set sysroot"?
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
Traceback (most recent call last):
File "/usr/share/gdb/auto-load/usr/lib/libgobject-2.0.so.0.3400.3-gdb.py", line 9, in <module>
from gobject import register
File "/usr/share/glib-2.0/gdb/gobject.py", line 3, in <module>
import gdb.backtrace
ImportError: No module named backtrace
[New Thread 0x7fffe87f9700 (LWP 6148)]
[New Thread 0x7fffe77df700 (LWP 6149)]
[New Thread 0x7fffe6bff700 (LWP 6150)]
[New Thread 0x7fffe5de4700 (LWP 6151)]
[New Thread 0x7fffe55e3700 (LWP 6152)]
[New Thread 0x7fffe49e2700 (LWP 6153)]
[New Thread 0x7fffe41e1700 (LWP 6154)]
[New Thread 0x7fffe39e0700 (LWP 6155)]
[New Thread 0x7fffe2dff700 (LWP 6156)]
[New Thread 0x7fffe1e9f700 (LWP 6157)]
[New Thread 0x7fffe12ff700 (LWP 6158)]
[New Thread 0x7fffe03ff700 (LWP 6159)]
[New Thread 0x7fffde1ff700 (LWP 6160)]
[New Thread 0x7fffdd9fe700 (LWP 6161)]
[New Thread 0x7fffdcbff700 (LWP 6162)]
[New Thread 0x7fffdc1ff700 (LWP 6163)]
[Thread 0x7fffdcbff700 (LWP 6162) exited]
[Thread 0x7fffdc1ff700 (LWP 6163) exited]
[New Thread 0x7fffdb9fe700 (LWP 6164)]
[New Thread 0x7fffdcbff700 (LWP 6165)]
[Thread 0x7fffdcbff700 (LWP 6165) exited]
[New Thread 0x7fffdcbff700 (LWP 6166)]
[New Thread 0x7fffdc1ff700 (LWP 6167)]
[New Thread 0x7fffda48b700 (LWP 6178)]
[New Thread 0x7fffd9c8a700 (LWP 6203)]
[Thread 0x7fffd9c8a700 (LWP 6203) exited]
[Thread 0x7fffe1e9f700 (LWP 6157) exited]
[New Thread 0x7fffd9c8a700 (LWP 6239)]
[New Thread 0x7fffe1e9f700 (LWP 6240)]
[New Thread 0x7fffd9489700 (LWP 6241)]
[New Thread 0x7fffd8c88700 (LWP 6242)]
[New Thread 0x7fffd8487700 (LWP 6243)]
[New Thread 0x7fffd7c86700 (LWP 6244)]
[New Thread 0x7fffd7485700 (LWP 6245)]
[Thread 0x7fffd7485700 (LWP 6245) exited]
[New Thread 0x7fffd7485700 (LWP 6246)]
[New Thread 0x7fffd6c84700 (LWP 6247)]
[New Thread 0x7fffd6483700 (LWP 6248)]
[New Thread 0x7fffd5c82700 (LWP 6249)]
[Thread 0x7fffd6c84700 (LWP 6247) exited]
[Thread 0x7fffd6483700 (LWP 6248) exited]
[New Thread 0x7fffd6c84700 (LWP 6250)]
[Thread 0x7fffd6c84700 (LWP 6250) exited]
[Thread 0x7fffd7c86700 (LWP 6244) exited]
Then it just sits there forever, spawning and killing new processes. Firefox never appears.
Any ideas?
Last edited by rezza (2013-02-12 11:13:14)

debijan wrote:try this:
firefox -P -no-remote -safe-mode
In order to test the problem, I think my suggestion is better; at least as a first try. Without Firefox running and without ~/.mozilla; no misconfiguration should prevent Firefox to run. The options you suggest will try to disable any problematic configuration. It can be usefull if you need to start Firefox to fix a configuration problem; but as a firt try renaming the ~/.mozilla is better because you are sure that Firefox can't read anything that can hurt it. Only after having figured out that a bad ~/.mozilla is the cause of the problem, we can try to fix the configuration (or restart with a new configuration).
Last edited by olive (2013-02-12 15:56:15)

Downloaded latest version and now firefox won't open "mozjs.dll not found"?

I downloaded version of firefox (5.0?), and when the computer restarted firefox won't open. I get a "mozjs.dll not found".
Help?

'''''[https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode Start Firefox in Safe Mode]''''' {web link}
While you are in safe mode;
Press the '''<Alt>''' or '''<F10>''' key to bring up the tool bar.
Followed by;
Windows; '''Tools > Options'''
Linux; '''Edit > Preferences'''
Mac; ''application name'' '''> Preferences'''
Then '''Advanced > General.'''
Look for and turn off '''Use Hardware Acceleration'''.
Poke around safe web sites and see if there is still a problem. Then restart.

Firefox 19 crashes on startup in normal and safe modes.

upon startup, ff19 crashes in both normal and safe modes. I've disabled all add ons and extensions.
XP Pro sp3.
It started crashing occaisionally, then increasingly more often, now, upon startup.
I tried reloading ff19.
I can't start ff with the -p command.
Crash ID: bp-89fc95f5-6efb-4c72-8721-fbf1b2110906
1361302409
1360392309
1358921494
1357934458
1354939166

its not correct crash id.
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.

Firefox won't open when prompted the first time. Says "Not Responding". I have to hit cntrl/alt/del then try starting again. Sometimes multiple times.

Firefox won't open when prompted the first time. Says "Not Responding". I have to hit cntrl/alt/del then try starting again. Sometimes multiple times.

Sounds like a "hang at exit" problem. There are several possible causes for that error. See:
* How to stop the running Firefox process
** In Task Manager, does firefox.exe show in the '''Processes''' tab?
** See: http://kb.mozillazine.org/Kill_application
* What may cause Firefox to hang at exit
** http://support.mozilla.com/en-US/kb/Firefox+hangs (see "Hang at exit" section)
** http://kb.mozillazine.org/Firefox_hangs
** https://support.mozilla.com/en-US/kb/Firefox+is+already+running+but+is+not+responding
* You may need to try Firefox Safe Mode
** You may need to use '''Safe Mode''' to locate the problem: http://support.mozilla.com/en-US/kb/Safe+Mode
**Firefox Safe Mode is a diagnostic mode that disables Extensions and some other features of Firefox. If you are using a theme, switch to the DEFAULT theme: Tools > Add-ons > Themes '''before''' starting Safe Mode. When entering Safe Mode, do not check any items on the entry window, just click "Continue in Safe Mode". Test to see if the problem you are experiencing is corrected.
** If the problem does not occur in Safe-mode then disable all of your Extensions and Plug-ins and then try to find which is causing it by enabling '''one at a time''' until the problem reappears. '''You MUST close and restart Firefox after EACH change''' via File > Restart Firefox (on Mac: Firefox > Quit). You can use "Disable all add-ons" on the Safe mode start window.
** See the following for more information
*** http://support.mozilla.com/en-US/kb/Troubleshooting+extensions+and+themes
*** http://support.mozilla.com/en-US/kb/Troubleshooting+plugins
*** http://support.mozilla.com/en-US/kb/Basic+Troubleshooting

Firefox won't open in normal or safe mode.

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