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Firefox crashes on start

Posted

Since upgrading to Firefox 18, I have been unable to start Firefox, even in Safe Mode. I have deleted my user profile and reinstalled Firefox twice. Clearing the user profile causes Firefox to offer to import from Internet Explorer, which I decline, after which is crashes. Subsequent starts result in crashes as well.

Since upgrading to Firefox 18, I have been unable to start Firefox, even in Safe Mode. I have deleted my user profile and reinstalled Firefox twice. Clearing the user profile causes Firefox to offer to import from Internet Explorer, which I decline, after which is crashes. Subsequent starts result in crashes as well.

Additional System Details

Application

  • User Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E)

More Information

Cannot access Help > Troubleshooting Information because Firefox will not start.

cor-el
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12012 solutions 111604 answers

If you can't open Firefox then see:

See also:


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

Do a malware check with some malware scanning programs on the Windows computer.
You need to scan with all programs because each program detects different malware.
Make sure that you update each program to get the latest version of their databases before doing a scan.

You can also do a check for a rootkit infection with TDSSKiller.

See also:

If you can't open Firefox then see: *http://kb.mozillazine.org/Mozilla_Crash_Reporter#Location_of_crash_reports *http://kb.mozillazine.org/Mozilla_Crash_Reporter#Viewing_crash_reports See also: *http://kb.mozillazine.org/Firefox_crashes *https://support.mozilla.org/kb/Firefox+crashes ---- Try to boot the computer in Windows Safe mode with network support (press F8 on the boot screen) as a test to see if that helps. Do a malware check with some malware scanning programs on the Windows computer.<br /> You need to scan with all programs because each program detects different malware.<br /> Make sure that you update each program to get the latest version of their databases before doing a scan. *http://www.malwarebytes.org/mbam.php - Malwarebytes' Anti-Malware *http://www.superantispyware.com/ - SuperAntispyware *http://www.microsoft.com/security/scanner/en-us/default.aspx - Microsoft Safety Scanner *http://www.microsoft.com/windows/products/winfamily/defender/default.mspx - Windows Defender: Home Page *http://www.safer-networking.org/en/index.html - Spybot Search & Destroy *Kasperky Free Security Scan: http://www.kaspersky.com/security-scan You can also do a check for a rootkit infection with TDSSKiller. *http://support.kaspersky.com/viruses/solutions?qid=208280684 See also: *"Spyware on Windows": http://kb.mozillazine.org/Popups_not_blocked

Question owner

Firefox 18.0.1 runs under safe mode, but once I reboot into "normal" mode, it begins crashing again.

Firefox 18.0.1 runs under safe mode, but once I reboot into "normal" mode, it begins crashing again.
cor-el
  • Top 10 Contributor
  • Moderator
12012 solutions 111604 answers

Helpful Reply

If you have submitted crash reports then please post the IDs of one or more crash reports that have this format:

  • bp-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx

You can find the IDs of the submitted crash reports on the about:crashes page.

  • You can open the about:crashes page via the location bar, like you open a website.

See:


Which security software (firewall, anti-virus) do you have?

If it works in Windows Safe mode then you have a problem with other software, likely security software or a system driver, that is running on your computer.
Make sure that you have the latest updates of your security software.

You can use the Autoruns utility to see which software and services gets started.

If you have submitted crash reports then please post the IDs of one or more crash reports that have this format: *bp-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx You can find the IDs of the submitted crash reports on the <i>about:crashes</i> page. *You can open the <b>about:crashes</b> page via the location bar, like you open a website. See: *http://kb.mozillazine.org/Mozilla_Crash_Reporter *https://support.mozilla.org/kb/Mozilla+Crash+Reporter ---- Which security software (firewall, anti-virus) do you have? If it works in Windows Safe mode then you have a problem with other software, likely security software or a system driver, that is running on your computer.<br /> Make sure that you have the latest updates of your security software. You can use the Autoruns utility to see which software and services gets started. *http://technet.microsoft.com/en-us/sysinternals/bb963902.aspx

Question owner

Here are the crash reports I have submitted: bp-1c85bd40-cc52-44f0-82c6-759fc2130131 bp-333cce79-20cf-4669-9b7b-53ba22130131 bp-555e2095-0d9f-4f7e-ba74-7726a2130131 bp-ab12b1f6-af03-49fe-a73b-80e7a2130131

I have little reason to believe this computer is infected. I am running McAfee Enterprise 8.8i with the AntiSpyware plugin. I've also performed scans with Windows Defender and Malwarebytes Antimalware, which detected nothing that would interfere with the browser start (such as a malicious service or plugin).

Here are the crash reports I have submitted: bp-1c85bd40-cc52-44f0-82c6-759fc2130131 bp-333cce79-20cf-4669-9b7b-53ba22130131 bp-555e2095-0d9f-4f7e-ba74-7726a2130131 bp-ab12b1f6-af03-49fe-a73b-80e7a2130131 I have little reason to believe this computer is infected. I am running McAfee Enterprise 8.8i with the AntiSpyware plugin. I've also performed scans with Windows Defender and Malwarebytes Antimalware, which detected nothing that would interfere with the browser start (such as a malicious service or plugin).
Tyler Downer
  • Top 25 Contributor
  • Administrator
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1189 solutions 7771 answers

This crash is caused by Websense Endpoint. Please contact them as you need to update your installation of Websense to fix this issue. They can assist you with that process.

This crash is caused by Websense Endpoint. Please contact them as you need to update your installation of Websense to fix this issue. They can assist you with that process.

Question owner

That makes sense. Thanks for the update.

That makes sense. Thanks for the update.