This is happening quite frequently - just now Tue Aug/24/2021 ~4:30pm - first a tab crash (no offer of report) attached image of tab crash: https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2021-08-24-13-32-26-2fd358.png

Then Firefox crashed a tab - but did not give the crash tab message - but appeared to "blink" but came up as "restore down" windowed mode - I was maximized. It was then I discovered - the crash message https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2021-08-24-13-36-46-cb36e8.png

Did you try safe mode? https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems

Have you tried turning off you security software? Did yo try starting windows in safe mode? Do you have the same issue from another account on the computer?

Did you try safe mode? https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems Have you tried turning off you security software? Did yo try starting windows in safe mode? Do you have the same issue from another account on the computer?

Thanks for trying to help, appreciated.

Up to a few days ago Firefox was working normally withOUT any crashes at all.

Two days ago Firefox crashed both the whole browser and tabs - since updating to 91.0.2 tab crashes happens more, but whole browser crashes does happen. I added a reply to this topic but seems to have disappeared after I edited it.

Today Tue Aug/24/2021 - ~4:30pm (Eastern) tab crash with this message but no offer of report: https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2021-08-24-13-55-56-2fd358.png

Then tab crashed but before I could react Firefox appeared to "blink" and came up in Restore Down Windowed mode instead of my normal maximized mode and I discovered this message below on my desktop: https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2021-08-24-13-58-02-cb36e8.png

I will try Firefox Safe mode, and the other suggested methods, and report back.

Thanks

In the address bar, type about:crashes<enter>. Note: If any reports do not have BP- in front of the numbers/letters, click it to submit them.

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

Using your mouse, mark the most recent 7 - 10 Submitted crash reports, and copy them. Now go to the reply box and paste them in.

Please, Do not post a screenshot ! !

For more help on crash reports, see; https://support.mozilla.org/en-US/kb/firefox-crashes-asking-support

In the address bar, type about:crashes<enter>. Note: If any reports do not have BP- in front of the numbers/letters, click it to submit them. The crash report is several pages of data. We need the report numbers to see the whole report. Using your mouse, mark the most recent 7 - 10 Submitted crash reports, and copy them. Now go to the reply box and paste them in. Please, Do not post a screenshot ! !

For more help on crash reports, see; https://support.mozilla.org/en-US/kb/firefox-crashes-asking-support

Thank you!

Initially on opening about:crashes only ONE report had been submitted - despite the fact I know I had responded to submit crash reports MULTIPLE times:

the current status:

Unsubmitted Crash Reports Report ID Date Crashed 38676ec2-52da-4729-aed5-e238cdc3bf94 8/24/2021, 6:51 PM 8299ed53-a255-496a-b4c7-05450e36671a 8/24/2021, 2:55 PM d8c64b7c-e2c9-40d1-9138-fab93bea3e13 8/24/2021, 11:06 AM Submitted Crash Reports Report ID Date Submitted bp-1b67547c-7af0-45bf-8cb1-a463d0210825 8/24/2021, 9:01 PM View bp-3a5b0365-a9fa-4c98-aeda-6db1d0210825 8/24/2021, 9:01 PM View bp-37c9ca0b-9628-4e4e-bcdc-0f67d0210825 8/24/2021, 9:01 PM View bp-83498076-131c-4cd6-87c3-bb7e50210825 8/24/2021, 9:01 PM View bp-58c405b4-b3ee-48cb-905d-419ad0210825 8/24/2021, 9:01 PM View bp-37875159-295f-45ca-bf15-0ac0a0210825 8/24/2021, 9:01 PM View bp-adbba1e2-aa24-44fe-bc38-8e5d90210825 8/24/2021, 9:01 PM View bp-ceb397b3-acde-48a9-91d4-103650210825 8/24/2021, 9:01 PM View bp-03bc2834-9178-4fd5-a1ce-c02dc0210825 8/24/2021, 9:01 PM View bp-e251f4e7-72dc-4103-a1c6-d56b00210824 8/24/2021, 2:55 PM View

The unsubmitted reports FAILED, and repeated refresh and starting about:crashes and resubmissions continues to fail.

Attached screenshot: https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2021-08-24-18-10-28-969de0.png

Thank you.

Product Firefox Release Channel release Version 91.0.2 Build ID 20210823123856 (2021-08-23)

Tue, 24 Aug 2021 20:27:48 GMT bp-1b67547c-7af0-45bf-8cb1-a463d0210825

Version 91.0.1 bp-3a5b0365-a9fa-4c98-aeda-6db1d0210825 bp-37c9ca0b-9628-4e4e-bcdc-0f67d0210825 bp-83498076-131c-4cd6-87c3-bb7e50210825

Signature: OOM | small

MOZ_CRASH Reason (Sanitized) : MOZ_CRASH()

Crash Reason EXCEPTION_BREAKPOINT

bdhkm64.dll = BitDefender ?

Update BitDefender. If the problem continues, disable it.

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}

Thank you for continuing to help, I am very grateful.

Update BitDefender. If the problem continues, disable it.

It's BitDefender Free which is a kind of set it an leave it antimalware - it updates both the virus database and software automatically screenshot taken just now of the version info -

https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2021-08-24-23-45-30-3f872b.png

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}

I have 8GB RAM - which is not usually a problem My Desktop (from System Information) OS Name Microsoft Windows 10 Home Version 10.0.19043 Build 19043 System Model HP Pavilion 590-p0097c Desktop Rfrbd PC Processor Intel(R) Core(TM) i5-8400 CPU @ 2.80GHz, 2808 Mhz, 6 Core(s), 6 Logical Processor(s) Installed Physical Memory (RAM) 8.00 GB Total Physical Memory 7.83 GB Available Physical Memory 4.22 GB Total Virtual Memory 31.8 GB Available Virtual Memory 25.7 GB Page File Space 24.0 GB

I ran the built-in Windows 10 Memory Diagnostic test, and it passed without any problems

This post is stuck on uploading a screenshot Uploading "MemTest_P1470423_210825.JPG".. (I'll post this before I lose it and will post the two screenshots in a reply.

Thanks

screenshot of Windows 10 built-in memory diagnostic test: https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2021-08-25-00-05-11-fc46c9.png

Posting error for above post: https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2021-08-25-00-05-42-8e3e27.png

The picture that seemed to cause the upload problem and eventually the posting error. (I reduced the size of the file and made it black and white) it was merely the progress of the memory test: Looks like that's failing too! Posting before I lose everything.

The memory test progress screen ( I do not know why it keep failing to upload - reduced file size, changed it to black and white and even shortened the filename)

LINK to Photo

Update BitDefender. If the problem continues, disable it.

Is the browser still crashing? Did you try disabling Bitdefender?

FredMcD said

Update BitDefender. If the problem continues, disable it.

Is the browser still crashing? Did you try disabling Bitdefender?

I really appreciate you continuing to try to help. Thanks you.

Better clarify things: my header is somewhat ambiguous. It is not if Firefox is crashing every single minute - you probably have already figure that out from the submitted and failed to submit crash reports. However Firefox does crash more frequently than desirable.

Firefox has always been my default browser for many, many years, with the combination of BitDefender Free. Other than a big hiccup in 2018 the antimalware has been trouble free.

BitDefender was chosen because it was almost maintenance free and very low on resources, as well as being one the top antimalware rated independently.

Although I am not ruling out some incompatibility between BitDefender and Firefox - it seems low to me, after all I have many years of experience with this very combination - without this problem, and any incompatibility would cause much more frequent and probably reproducible.

Firefox version: https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2021-08-25-09-17-16-940bb0.png

BitDefender FREE version info: https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2021-08-25-09-17-25-3f872b.png

I am a relatively heavy user (but not unreasonable) of Firefox with several concurrent tabs open (15-16), often with a streaming TV/video with Locast.org https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2021-08-25-09-20-07-eb2e48.png

jonzn4SUSE: I did use SAFE mode - but the frequency/conditions of these crashes is unpredictable. I really could not keep Firefox in SAFE mode for any lengthy period to be meaningful or "prove" Safe mode eliminated the problem. As the ads etc that I have add-on blocker, became disturbing - this is the whole point of using Firefox.

Do thank you for your continued help

Just wanted to say thanks for all the suggestions and help I received. Really appreciated it, I learned a lot here.

It has been over 12 hours of Firefox being active - there have not been any tab or browser crashes or at least none reported in about:crashes.

There were a couple of "freezes"/hangs when I refreshed a tab - that required me to close Firefox and reopen to be functional again, so not perfect - but a lot better than over the past 2 days.

I'll return to update if there are any recurring problems.

Thanks,

If you think it may be a memory issue, this article may be instructive. https://support.mozilla.org/en-US/kb/firefox-uses-too-much-memory-or-cpu-resources

If you think it may be a memory issue, this article may be instructive. https://support.mozilla.org/en-US/kb/firefox-uses-too-much-memory-or-cpu-resources

Thank you for that useful input.