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.

Once you get the pop-up, just select "'Start in Safe Mode"

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 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.

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.

1. Press the following shortcut to get a Run window: [Windows] + [R]. This should bring up a window that contains a text field.
2. In that text field, enter %APPDATA% and press Enter. An explorer window should open.
3. From that explorer window, double-click on the Mozilla folder, then double-click on Firefox and then on Crash reports. Double-click on submitted.
4. 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.
5. Open the most recent 5 files with a text editor and copy the IDs.
6. 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 Troubleshoot Firefox crashes (closing or quitting unexpectedly) article.

Could you try starting up Firefox in its Safe Mode? To do that, hold the Shift key down while double-clicking the Firefox program icon.

In the small dialog that (hopefully) appears, click "Start in Safe Mode" (not Reset)

If that runs, disable Firefox's use of hardware acceleration for graphics.

orange Firefox button (or Tools menu) > Options > Advanced

On the "General" mini-tab, uncheck the box for "Use hardware acceleration when available"

Also, check your extensions. If you have Norton extensions, disable those temporarily until you can update, as the ones from more than a week ago are not compatible with Firefox 24. While you're there, feel free to disable anything else that isn't essential (i.e., you could live without for 24 hours).

orange Firefox button (or Tools menu) > Add-ons > on the left side click Extensions

Usually a link will appear above at least one disabled extension to restart Firefox. You can complete your work on the tab and click one of the links as the last step. Then when you restart, go into normal Firefox and see whether it runs.

Any improvement?

I tried to open firefox in safe mode it wont even open that way either it just keeps giving me this window with this info in it

Problem signature:

 Problem Event Name:	APPCRASH
 Application Name:	firefox.exe
 Application Version:	24.0.0.5001
 Application Timestamp:	522fd29f
 Fault Module Name:	ntdll.dll
 Fault Module Version:	6.1.7601.18247
 Fault Module Timestamp:	521ea8e7
 Exception Code:	c0000005
 Exception Offset:	0002e04e
 OS Version:	6.1.7601.2.1.0.768.3
 Locale ID:	1033
 Additional Information 1:	b21e
 Additional Information 2:	b21eec1522c4859456611373b2bc31d4
 Additional Information 3:	4fcd
 Additional Information 4:	4fcda050134e1df0038b45ec0bc068b3

Read our privacy statement online:

 http://go.microsoft.com/fwlink/?linkid=104288&clcid=0x0409

If the online privacy statement is not available, please read our privacy statement offline:

 C:\Windows\system32\en-US\erofflps.txt

These are what I found when I open the crash report that's all that's in it

Crash ID: bp-7a81992e-30bf-43f0-b686-828242130803

Crash ID: bp-25c40bd1-c319-4702-9582-f4d782130814

Crash ID: bp-89da656a-6112-41ec-9d7e-106892130922

Crash ID: bp-f093cade-8cd2-48c7-90d4-6215c2130504

Hello,

Certain Firefox problems can be solved by performing a Clean reinstall. This means you remove Firefox program files and then reinstall Firefox. Please follow these steps:

Note: You might want to print these steps or view them in another browser.

1. Download the latest Desktop version of Firefox from http://www.mozilla.org and save the setup file to your computer.
2. After the download finishes, close all Firefox windows (click Exit from the Firefox or File menu).
3. 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
   • Mac: Delete Firefox from the Applications folder.
   • Linux: If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it - see Install Firefox on Linux. If you downloaded and installed the binary package from the Firefox download page, simply remove the folder firefox in your home directory.
4. Now, go ahead and reinstall Firefox:
   1. Double-click the downloaded installation file and go through the steps of the installation wizard.
   2. Once the wizard is finished, choose to directly open Firefox after clicking the Finish button.

Please report back to see if this helped you!

Thank you.

Hi dwbonecrusher, how far did you get trying to start up in Safe Mode? Did you get the dialog with the two buttons?

Thank you for the crash report links. The first 3 are linked to a bug about Firefox having a problem finding a serif font. (The 4th doesn't have enough data.) I haven't seen that issue before, so nothing leaps to mind.

Can you see if any fonts are mislocated, corrupt etc..

See: http://answers.microsoft.com/en-us/windows/forum/windows_7-desktop/how-do-i-fix-corrupted-font-files-in-windows-7/7860617d-e4a8-4792-a84b-b83f4bfd81b4?msgId=8e77bc2b-e2cb-4b07-b8ed-440f9c350f7e

it wont open at all in safe mode it just gives me the same box to close program nothing else

Have you tried the clean reinstall, note that doing that does not delete the profile containing bookmarks, history, passwords, etc.

Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen) as a test to see if that helps.