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Breakpoint Exception 0x80000003

  • 4 replies
  • 1 has this problem
  • Last reply by bsfinkel

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I am running Firefox 84.0 (64-bit) in Windows 10 Professional 2004. Saturday I received a pop-up window:

    firefox.exe - Application error
    The exception Breakpoint
    A breakpoint has been reached.
    (0x80000003) occurred in the application at location 0x00007FFAA7321425
    Click OK to terminate the program 

Is there any way to determine what happened? Thanks.

All Replies (4)

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Start Firefox in Safe Mode {web link}

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

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This was a one-time occurrence (so far in my Windows 10 lifetime). I assume that the problem was detected by Windows, not by Firefox. I just restarted Firefox in safe mode. What am I supposed to see? When the windows pop-up appeared over the weekend, I clicked OK to terminate Firefox (per the message), and I started Firefox.

What do I do if and when the next time the problem occurs? Do I take a dump of the Firefox processes before cancelling Firefox?

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Safe Mode is a troubleshooting mode that temporarily turns off hardware acceleration, resets some settings, and disables add-ons (extensions and themes). If the problem goes away, that tells us one thing. If it does not, that tells us something else.

bsfinkel said

What do I do if and when the next time the problem occurs?

If you get a crash message from Firefox, send it in, then post it here.

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Fred, as you might remember, I was ALWAYS running Firefox in safe mode when I was running Windows 7. In Windows 10, I have not seen the need to run in safe mode, and I have had few Firefox crashes, except on Exits. But those ended in early September when I installed 80.0.1.