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

bp-aa5f5ed1-81d7-438b-bc9b-b60870210403 4/3/2021, 9:18 PM bp-75c10dc6-e299-4fdf-9a89-ec2d50210403 4/3/2021, 9:18 PM bp-f0e81756-fb3c-46fd-b74c-45b330210403 4/3/2021, 9:18 PM bp-289d7125-6928-45ec-bcdf-7b8d60210403 4/3/2021, 9:18 PM bp-d886a1e0-cf32-47e4-a78b-2e6340210403 4/3/2021, 9:19 PM bp-36039e75-f65a-4f4c-a9b9-b07a30210403 4/3/2021, 9:19 PM . is it enough? or make more? :)

bp-aa5f5ed1-81d7-438b-bc9b-b60870210403 bp-75c10dc6-e299-4fdf-9a89-ec2d50210403 bp-f0e81756-fb3c-46fd-b74c-45b330210403

Signature: memcpy_repmovs | nsJARInputStream::Read

Crash Reason EXCEPTION_IN_PAGE_ERROR_READ / STATUS_DEVICE_DATA_ERROR

This is for Sumo's Related Bugs 1551562 NEW --- Crash in [@ memcpy | nsJARInputStream::Read]

We have been seeing this a lot of late.

"VCRUNTIME140_1.DLL is not found"? Install both 32-bit and 64-bit "Visual Studio 2015, 2017 and 2019" downloads, (x86: vc_redist.x86.exe and x64: vc_redist.x64.exe) from https://support.microsoft.com/help/2977003/the-latest-supported-visual-c-downloads

oh you're right. I didn't still installed those that you mentioned. thanks! I will install them and tell you the results.

Here is some more crash report that created after the x86 and x64 installation:

bp-9af427c0-384b-4385-83a6-374390210403 4/4/2021, 1:47 AM bp-8a1dbac3-c0d9-4ea1-a183-7db3c0210403 4/4/2021, 1:47 AM bp-652dc9f0-e18d-4e44-b026-71f7d0210403 4/4/2021, 1:45 AM

thank you for the attention.

bp-9af427c0-384b-4385-83a6-374390210403 bp-8a1dbac3-c0d9-4ea1-a183-7db3c0210403 bp-652dc9f0-e18d-4e44-b026-71f7d0210403

Signature: memcpy_repmovs | nsJARInputStream::Read

Uptime 25 seconds

Crash Reason EXCEPTION_IN_PAGE_ERROR_READ / STATUS_DEVICE_DATA_ERROR

MpOAV.dll = Microsoft IOfficeAntiVirus Module Important: Some malware camouflages itself as MpOav.dll

This is for Sumo's Related Bugs 1551562 NEW --- Crash in [@ memcpy | nsJARInputStream::Read]

You may have ad/mal-ware. Further information can be found in this article; https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware?cache=no

Run most or all of the listed free to use malware scanners. Each works differently. If one program misses something, another may pick it up.

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 guess that maybe my HDD or RAM is physically injured. because recently the Windows itself did crash a lot on me and showed me bluescreen with different stop codes. I did defragment and memory diagnosis but didn't help. I was thinking maybe it's because of deleting Linux dual boot and specify its space to windows. So, I get a backup of my data and delete ALL of the partitions, and install fresh windows on it. so there is no virus. I install avast (the free one) and scan my hard to make sure it's not because of malware. but I don't know if maybe someone gets control of my firefox account. it's almost a week and the windows didn't crash on me even once. sometimes it freezes for 4 seconds but it will back to normal after that without crash or closing something. I can freely use edge, use chrome, and also firefox but without the firefox account login. if I log in the crash will start. especially if I hit the "sync now" or "sign out" it will crash immediately after that and don't let them to do that. it's very sensitive to those options. (before deleting Linux I was using Linux mint but that goes weird and didn't let me do my daily works. So, I came back to the windows hoping that I will not see that weirdness again.) I will do your suggestions and tell you the results.

windows handle the page size automatically. about the memtext, I get Auto-installer for USB Key (Win 9x/2k/xp/7) for my USB flash drive. installed it and select USB in the boot menu but it didn't recognize it. then I get Pre-Compiled Bootable ISO (.zip), unzip it, opened Rufus to boot it on USB but after selecting the ISO, Rufus says this: Unsupported image This image is either non-bootable, or it uses a boot or compression method that is not supported by Rufus...

For the links, I believe that:

• my firefox is not slow.
• its usage of cpu and memory-ram is normal, it's not high and abnormal.
• it doesn't take a long time to startup (except the first time after turning on the laptop which is normal)
• it's responsive and all is normal until when I don't sign in to my firefox account for the firefox browser.
• also it doesn't crash when I sign in to my firefox account directly on the firefox website for the support.

it's just when I sign in from the top-right corner of the firefox browser software.

I called for more help.

Thank you for your help! Actually it was because of my HDD that was getting worse day by day. after that I said that chrome and everything is fine and smooth, it no longer was. I did another defragment and my laptop got even slower. just like 30 minute for startup of windows. now i buy SSD and install fedora. everything is fine, crash-free, smooth and fast. again, thank you for sharing your time to help me.

That was very good work. Well Done.