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.

Crash ID's as requested.

Crash ID: bp-9ab6e325-05d7-4458-a5be-7af872130405
Crash ID: bp-17b04836-5ab0-4043-b186-9589a2130405
Crash ID: bp-5f849040-ca2f-4cd1-b29f-e91152130405
Crash ID: bp-a93415b6-ef47-425f-b0a3-bb6162130405
Crash ID: bp-f5d7ccb6-3fe3-48b2-b9a1-dd56a2130405

Thanks in advance.

Nick.

Try to set the gfx.content.azure.enabled pref to false or if this didn't help disable Direct2D by setting the gfx.direct2d.disabled pref to true on the about:config page and leave hardware acceleration otherwise enabled.

• http://kb.mozillazine.org/about:config

You can also try to uninstall Windows update KB2670838 if you have this update.

• http://support.microsoft.com/kb/2670838

• Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"
• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

If the above doesn't solve the issue try this:

Open Firefox in Safe Mode (Diagnose Firefox issues using Troubleshoot Mode) then disable hardware Acceleration turning off Hardware acceleration. Then start Firefox in normal mode and it should work fine.

Let us know if any of this helps!

Hello,

Setting gfx.content.azure.enabled pref to false had no effect - Firefox still crashed on startup.

However, setting gfx.direct2d.disabled pref to true cured the problem - Firefox now starts up OK.

What is the purpose of the above setting ?

Many thanks for the very quick reply and cure....

Nick.

I got the same problem its been there for several months now. Ive tried uninstalling everything and deleting all folders then reinstalling on several upgrades as time has gone on in the hope that it has been fixed but its still doing it. It tries to load then disappears from the screen in a flash. I don't have time to click on anything or set anything as its gone in a fraction of a second. Only the firefox application is doing this. I have my firewall switched off. I dont understand this as i have used firefox for years and it was allways reliable but now it wont even load.