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Read the fixes and still having problems. Firefox will not open at all and I receive a crash report upon launch. Have restarted, shut down, run virus and malware checks and even tried downloading and reinstalling with no response. Please assist.

  • 9 replies
  • 16 have this problem
  • Last reply by peegeetips

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Read the fixes. Cannot open Firefox in safe mode. Have tried reinstalling Firefox. Crash occurs each time I try to launch Firefox. Have run scans, checked for malware, spyware, installed all windows updates and still no luck.

Have accessed my crash reports. One of the reasons indicated is: GenuineIntel family 6 model 23 stepping 10

Crash Reason


Have no idea how to fix this and have had crash reports since yesterday evening.

Signature: nsStandardURL::SchemeIs(char const*, int*)

All Replies (9)

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Your computer is infected by winapi64 malware.

See Troubleshoot Firefox issues caused by malware.

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Scoobidiver, thank you for responding. I did a malware check twice and it found nothing (assuming this may be one that isn't easily detectible). Do I need to find a way to search for it and eliminate it or find a fix online and run to check specifically for that type of malware?

Again, thank you for the assistance!


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Okay, ran several scans and it has isolated the firefox malware and I've got in Avast's virus chest. Then restarted, uninstalled firefox and reinstalled and still crashes. Any ideas?!

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Firefox is not malware and reinstalling Firefox doesn't help to prevent crashes.

What do forums about malware (stated at the end of the above article) say?

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Sorry believe something got miscommunicated. Wasn't trying to qualify firefox as malware - was terming it that way because the malware was crashing Firefox and no other issue. Worked on it and had isolated the virus in avast (put it in the chest) and was searching for assistance on why even after isolating the virus and restarting (some forums had indicated to then uninstall and reinstall Firefox, which I did), still would not launch without the crash report.

Worked the problem and eventually installed a 5.0 version of Firefox and it launches. Only seems to have the crash report with 6.0 or higher.

The forums had suggested that if after isolating the malware in avast or disinfecting it with MBAM (tried that too), to uninstall and then reinstall the latest version of firefox. That's when I tried the older versions. Had run a boot log scan as well and didn't see any additional problems. Just can't launch in 6.0 or higher.

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Please, don't install old insecure versions of Firefox such a Firefox 5.0. It's like having antivirus software without an up-to-date virus database.

The good news is that your crash is fixed by the patch of bug 670542 landed in Firefox 7 Beta, soon in release candidate and pretty stable.

The bad news is that Firefox is not anti-malware software, so it won't prevent other hidden symptoms of this malware you can't totally isolate.

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Even though the bug is "fixed" in Firefox 7 the malware is still on your system if Firefox 6 is crashing and the crash report shows:
Signature: nsStandardURL::SchemeIs(char const*, int*)

Please get help from a forum specializing in malware removal, such as one of those mentioned in the Troubleshoot Firefox issues caused by malware article.


Modified by AliceWyman

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I was wondering whether this has to do with having a 64 bit computer. I have two computers (a 32 bit and a 64 bit). I have had 20 crashes in the last 10 days on the 64 bit. I hae never had a crash on the 32 bit.