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. On the keyboard, press [Windows] The image "Windows key" does not exist. + [R]. This should bring up a Run window that contains a text field.
2. In that text field, type %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.

Start Firefox in Safe Mode {web Link} by holding down the <Shift>
(Mac Options) key, and then starting Firefox. Is the problem still there?

While still in Safe Mode,

In the address bar, type about:crashes<enter>. Note: If any reports do not have BP in front of the numbers/letters, click it and select Submit.

The crash report is several pages of data. We need the report numbers to see the whole report.

Using your mouse, mark the most resent 7 - 10 crash reports, and copy them. Now go to the reply box below and paste them in.

If you can't get Firefox to open, you will have to do this the hard way. https://support.mozilla.org/en-US/kb/mozillacrashreporter Open the file browser / explorer on your computer. Note: You may have to enable Show Hidden Folders / Files. Enter this in the address bar;

Windows: %APPDATA%\Mozilla\Firefox\Crash Reports\submitted Win 7/Vista: C:\Users\<username>\AppData\Roaming\Mozilla\Firefox\Crash Reports\submitted Win XP/2000: C:\Documents and Settings\<username>\Application Data\Mozilla\Firefox\Crash Reports\submitted

Mac OS: /Users/<username>/Library/Application Support/Firefox/Crash Reports/submitted Linux: /home/<username>/.mozilla/firefox/Crash Reports/submitted

Copy the last 5-7 Recent File Names in the folder. Post the information in the reply box below.

20d3b600-9113-4814-b8a3-5a7657aff580 10/7/2015 1:14 AM c02a5e36-9ad9-4c21-addb-f49b481d8bd6 10/7/2015 1:10 AM bp-bc29ba71-5e5b-4787-9987-bfc5b2151007 10/7/2015 12:40 AM 3ce79e8e-199f-440a-a869-1321024a372b 10/7/2015 12:38 AM 73d1f813-c149-4c24-9ab6-774569a03afb 10/6/2015 9:20 PM 4dcb3348-b32d-4ccd-9855-8f05f089a866 10/6/2015 6:44 PM c6d7466c-f8c0-4bc6-b0d6-d20ceb5cce85 10/6/2015 4:33 PM 4e9b8664-7121-4cb1-9933-23bf67533fe5 10/5/2015 11:39 PM 70652043-2361-46aa-a655-5c6d62140fc1 10/5/2015 11:38 PM

FredMcD said

Some of your crash reports weren’t sent to the Mozilla Servers.

In the address bar, type about:crashes<enter>. Note: If any reports do not
have BP in front of the numbers/letters, click it and select Submit.

Product Firefox Version 39.0.3

Release Channel release OS Windows NT OS Version 5.1.2600 Service Pack 3

https://support.mozilla.org/en-US/kb/update-firefox-latest-version 41.* +++++++++++++++++++++++++++++++++++++++ The crash report flagged these programs;

IPSEng32.dll = Symantec Intrusion Detection

This is for Sumo's Related Bugs 1205987 NEW --- startup crash in PR_Read | GetStatusFileContents<T> with freecorder app

Remove freecorder from your system.

To expand on that last message: Firefox is crashing within seconds of startup if you have either of the Applian Technologies programs Freecorder or Replay Media Catcher in combination with Norton security software (and possibly some other security software).

If you have either of those Applian programs and it isn't essential, try uninstalling it and then restarting Windows to ensure that none of its components are left running.

Will Firefox start normally after that?

If you prefer not to uninstall the program, other users have successfully used msconfig to prevent FlvSrvc.exe from running at startup and that fixed it.

To FredMcD: I checked my system and it didn't show any file Freecorder, however, Applian's Replay Media Catcher has a Freecorder version out now. I own a previous version that wasn't called Freecorder but was related. The IPSEng32.dll file in Norton doesn't affect my other computer's running of Mozilla.

To Jscher2000: I deactivated FlvSrvc.exe from my startup and Mozilla was working again but windows advised that I was starting in Selective mode rather than normal. So I activated that again and I uninstalled Applian's Replay Media Catcher 3 and Mozilla is working fine. I'll contact Applian about this. It always worked together in the past??

Thanks you guys for everything.