We're sorry to hear that Firefox is crashing. In order to assist you better, please follow the steps below to provide us crash IDs to help us learn more about your crash.

The crash report is several pages of data. We need the report numbers to see the whole report.

1. Enter about:crashes in the Firefox address bar and press Enter. A list of Submitted/Unsubmitted Crash Reports will appear, similar to the one shown below.
2. Copy the 5 most recent Submitted Report IDs that start with bp- and then go back to your forum question and paste those IDs into the "Post a Reply" box.

Note: If a recent Report ID does not start with bp- click on it to submit the report.

(Please don't take a screenshot of your crashes, just copy and paste the IDs. The below image is just an example of what your Firefox screen should look like.)

Thank you for your help!

More information and further troubleshooting steps can be found in the Troubleshoot Firefox crashes (closing or quitting unexpectedly) article.

Thank you. Like so?

bp-e8b9ef59-00d1-4dd4-b769-9b6510210311 11-Mar-21, 17:17 bp-a0c076d9-6304-4aa9-8d1f-b33fc0210303 03-Mar-21, 07:50 bp-4cb4efb5-bbc3-4583-9a2d-5791b0210704 04-Jul-21, 13:07 bp-39b03ad0-a7cb-4c5e-9292-db0f00210704 04-Jul-21, 13:07 bp-ed09993e-920c-44de-8966-519850210704 04-Jul-21, 13:07

Hi Karl

Thank you for those - really useful.

Looking at them, it looks (to me) that your copy of Windows may need updating. There is a file that is a Windows file that seems to be an old version number that is appearing on the most recent crash reports you have submitted.

Thank you, Seburo. My Windows is up to date. Which Windows file are you referring to specifically?

Thu, 11 Mar 2021 16:16:24 GMT bp-e8b9ef59-00d1-4dd4-b769-9b6510210311 Signature: OOM | small

Wed, 03 Mar 2021 02:22:29 GMT bp-a0c076d9-6304-4aa9-8d1f-b33fc0210303 Signature: OOM | large | js::AutoEnterOOMUnsafeRegion::crash | js::AutoEnterOOMUnsafeRegion::crash | js::gc::AllocateCellInGC

Thu, 24 Jun 2021 05:47:32 GMT bp-4cb4efb5-bbc3-4583-9a2d-5791b0210704 Signature: OOM | large | mozalloc_abort | webrender::renderer::upload::upload_to_texture_cache

Thu, 24 Jun 2021 04:56:51 GMT bp-39b03ad0-a7cb-4c5e-9292-db0f00210704 Signature: OOM | small ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Product Firefox Release Channel release Version 89.0.1

Wed, 23 Jun 2021 14:33:33 GMT bp-ed09993e-920c-44de-8966-519850210704 Signature: OOM | large | mozalloc_abort | hashbrown::raw::Fallibility::alloc_err

MOZ_CRASH Reason (Sanitized) : MOZ_CRASH()

Crash Reason EXCEPTION_BREAKPOINT

The crash report flagged these programs; msmpeg2vdec.dll = Microsoft DTV-DVD Video Decoder

This is for Sumo's Related Bugs 1678464 RESOLVED DUPLICATE Crash in [@ OOM | large | mozalloc_abort | hashbrown::raw::Fallibility::alloc_err]

1678409 NEW --- Crash in [@ OOM | large | mozalloc_abort | hashbrown::raw::Fallibility::alloc_err] ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Listed on an old report: MpOAV.dll = Microsoft IOfficeAntiVirus Module belongs to software Microsoft Windows Operating System or Microsoft Malware Protection or Microsoft Security Essentials by Microsoft (www.microsoft.com). Important: Some malware camouflages itself as MpOav.dll

Some of the reports were too old to be useful.

Basically, an OOM (Out Of Memory) means the system is having issues with the RAM.

https://support.mozilla.org/en-US/kb/firefox-slow-how-make-it-faster

https://support.mozilla.org/en-US/kb/firefox-uses-too-many-cpu-resources-how-fix

https://support.mozilla.org/en-US/kb/firefox-uses-too-much-memory-ram

https://support.mozilla.org/en-US/kb/firefox-hangs-or-not-responding

https://support.mozilla.org/en-US/kb/firefox-takes-long-time-start-up

https://support.mozilla.org/en-US/kb/quick-fixes-if-your-firefox-slows-down

MemTest LAST UPDATED : 12/04/2020 Could you please run a tool from http://memtest.org/ in order to check the integrity of your RAM?

You will need a thumb or disk drive to install it on.

Do you let Windows handle the page file or did you set a fixed size ? Control Panel -> System -> Advanced -> Performance -> Settings

If you use a fixed size for the page file then try the former and let Windows handle the page file. How to determine the appropriate page file size for 64-bit versions of Windows {web link}