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Firefox has started reliably crashing on startup. It crashes instantly in normal mode, and after about 4 seconds in safe mode. I'm trying to see any kind of debugging output so I can work out what is causing it but can't find anyway to see any kind of log!

  • The Crash Reports\pending\xxx.dmp files are binary so not much help.
  • If I run it from the console with -console it does create a new console window, but nothing is ever written to it, and it closes when Firefox crashes.
  • -attach-console doesn't seem to work as described.

Any ideas?

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  • My research suggests entering about:crashes in the URL bar, although that doesn't help if the browser is crashing immediately... I'll keep digging.
    – Burgi
    Feb 18, 2016 at 9:48
  • Yeah also I tried that in the brief time it survives when launched in safe mode. It appears to just list the crashes in Crash Reports\pending. It hasn't survived long enough for me to click on one.
    – Timmmm
    Feb 18, 2016 at 9:50
  • Aha it seems you can get the filenames from Crash Reports\pending and paste them in this URL: crash-stats.mozilla.com/report/index/bp-... It says it takes up to 5 minutes to retrieve so I'll see what it says...
    – Timmmm
    Feb 18, 2016 at 9:54
  • I was about to post the same link!
    – Burgi
    Feb 18, 2016 at 9:55

1 Answer 1

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Not a log, but all of the reported crashes are publicly available (who knew)?

  1. Go to %appdata%\Mozilla\Firefox\Crash Reports\submitted in Explorer
  2. Copy the filename (except .txt) of the latest crash, e.g. bp-21034108-2f5f-47ef-bf66-cf29f2160218
  3. Browse to https://crash-stats.mozilla.com/report/index/<paste filename here>

In my case it was Websense injecting a DLL (qipcap.dll) that caused Firefox to crash. Fix in this comment.

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