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Firefox crashes

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Firefox has been crashing several times a day for the past 2-3 weeks. I've uninstalled then tried to reinstall but keep getting application error 0xc0000142. I've used firefox a couple of years but this just started. Please HELP!!

Firefox has been crashing several times a day for the past 2-3 weeks. I've uninstalled then tried to reinstall but keep getting application error 0xc0000142. I've used firefox a couple of years but this just started. Please HELP!!

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Sorry to hear about the crashes. If you are getting the Mozilla Crash Reporter form, your Firefox may have logged some data that would help track down the cause of the problem. You can submit that data to Mozilla and share it with forum volunteers to see whether it points to the solution. Please check the support article "Firefox crashes - asking for support" for steps to get those crash report IDs from the about:crashes page, and then post some of the recent ones here.

If you are getting a crash dialog from Windows instead of Firefox, then Firefox might not have been able to store any crash data.

Also and/or meanwhile, could you test in Firefox's Safe Mode? That's a standard diagnostic tool to deactivate extensions and some advanced features of Firefox. More info: Diagnose Firefox issues using Troubleshoot Mode.

If Firefox is not running: Hold down the Shift key when starting Firefox.

If Firefox is running: You can restart Firefox in Safe Mode using either:

  • "3-bar" menu button > "?" button > Restart with Add-ons Disabled
  • Help menu > Restart with Add-ons Disabled

and OK the restart.

Both scenarios: A small dialog should appear. Click "Start in Safe Mode" (not Refresh).

Any less crashy?