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Following https://support.mozilla.org/en-US/kb/troubleshoot-firefox-crashes-closing-or-quitting

Crash Reports (Newest to Oldest, starting with troubleshoot mode: https://crash-stats.mozilla.org/report/index/bp-c5831b14-736e-4a37-a0f5-9eb170260310 https://crash-stats.mozilla.org/report/index/bp-ed2fcada-4566-4a83-9adb-5554d0260304 https://crash-stats.mozilla.org/report/index/bp-74a45b0c-663a-4c0d-981a-460cd0260304 https://crash-stats.mozilla.org/report/index/bp-98feeed5-7fef-4c7b-aaa9-562930260303

Occurs since end February, so probably since 148.0-1 Always in the same place in libgio-2.0.so.0

I will try to roll back to 147.0.4-1

Firefox is CONSTANTLY crashing now and I'm about ready to switch to another browser unless someone can give me a reason to stay.

Moderator note: This question has been edited to clarify OS version (based on crash reports).

I have never deleted so many emails at one time, around 500. Did I exceed the limits of Thunderbird? I cannot log on. Cannot see new emails. I have been on emailsrvr.com and did verify my passwords. Thank You

This started last year and I found a fix on google but I can't remember it. It has noiw come back and is driving me nuts. About 2-5 minutes into composing an email thunderbird goes unresponsive and is greyed out. i have waited 30 mintues and nothing happens. It does not happen until after you type the first character into the new email. I have checked user rights on the thunderbird folder and my windows user folder and I have admnin rights on both If i shut Thunderbird the email appears in drafts when i restart, but only from a bit before it froze. I have reinstalled, compacted nothign is fixing it. Using 64 bit 140.3 on windows 11 home.Tried update to 140.3.1esr. no difference. Just about to give up and go to Outlook because I don't write trivial emails and this is a PITA

Every time I open Thunderbird, I get the attached pop-up which I can't delete except when I use control alt delete. It always comes back. How can I permanently delete it? Thanks, Mark

Deleted around 400 unread emails at one time, something not done before. Thunderbird shut down, now can not log in. Do not have backup password or two step authorization. Any hope for getting back in?

AdapterDeviceID: 0x9bc8 AdapterDriverVersion: 30.0.101.3111 AdapterSubsysID: 86941043 AdapterVendorID: 0x8086 AvailablePageFile: 7602827264 AvailablePhysicalMemory: 5482582016 AvailableVirtualMemory: 138522402320384 BackgroundTaskMode: 0 BuildID: 20260216153405 CPUMicrocodeVersion: 0x100 ContentSandboxCapable: 1 ContentSandboxLevel: 9 ContentSandboxWin32kState: Win32k Lockdown enabled -- default value is true CrashTime: 1772717547 DOMFissionEnabled: 1 DOMIPCEnabled: 1 EMCheckCompatibility: true GPUProcessLaunchCount: 6 GPUProcessStatus: Running GpuSandboxLevel: 2 GraphicsCriticalError: |[0][GFX1-]: CompositorBridgeChild receives IPC close with reason=AbnormalShutdown (t=8.27141) |[16]CP+[GFX1-]: CompositorBridgeChild receives IPC close with reason=AbnormalShutdown (t=23.7756) |[17]CP+[GFX1-]: CompositorBridgeChild receives IPC close with reason=AbnormalShutdown (t=23.7756) |[18]CP+[GFX1-]: CompositorBridgeChild receives IPC close with reason=AbnormalShutdown (t=23.7756) |[19]CP+[GFX1-]: CompositorBridgeChild receives IPC close with reason=AbnormalShutdown (t=23.7757) |[20][GFX1-]: CompositorBridgeChild receives IPC close with reason=AbnormalShutdown (t=27.6517) |[21]CP+[GFX1-]: CompositorBridgeChild receives IPC close with reason=AbnormalShutdown (t=27.6518) |[22]CP+[GFX1-]: CompositorBridgeChild receives IPC close with reason=AbnormalShutdown (t=27.6518) |[23]CP+[GFX1-]: CompositorBridgeChild receives IPC close with reason=AbnormalShutdown (t=27.6518) |[24]CP+[GFX1-]: CompositorBridgeChild receives IPC close with reason=AbnormalShutdown (t=27.6518) |[25]CP+[GFX1-]: CompositorBridgeChild receives IPC close with reason=AbnormalShutdown (t=27.6518) |[26]CP+[GFX1-]: IPC Channel is already torn down unexpectedly

(t=27.6543) |[27]CP+[GFX1-]: IPC Channel is already torn down unexpectedly
(t=27.6543) |[28][GFX1-]: CompositorBridgeChild receives IPC close with reason=AbnormalShutdown (t=31.3125) |[14][GFX1-]: CompositorBridgeChild receives IPC close with reason=AbnormalShutdown (t=23.7753) |[15]CP+[GFX1-]: CompositorBridgeChild receives IPC close with reason=AbnormalShutdown (t=23.7756) 

HeadlessMode: 0 InstallTime: 1772714308 LastStartupWasCrash: 0 LauncherProcessState: 0 ModuleSignatureInfo: {"Mozilla Corporation":["firefox.exe","xul.dll","gkcodecs.dll","nss3.dll","freebl3.dll","softokn3.dll","mozglue.dll","lgpllibs.dll"],"Microsoft Windows":["Windows.Security.Integrity.dll","ondemandconnroutehelper.dll","wscapi.dll","linkinfo.dll","explorerframe.dll","dataexchange.dll","wshbth.dll","twinapi.dll","msimg32.dll","winmm.dll","AudioSes.dll","dbgcore.dll","dbghelp.dll","winrnr.dll","pnrpnsp.dll","wininet.dll","directmanipulation.dll","DWrite.dll","FWPUCLNT.DLL","urlmon.dll","Windows.UI.Immersive.dll","iertutil.dll","Windows.Globalization.dll","winhttp.dll","OneCoreUAPCommonProxyStub.dll","BCP47mrm.dll","InputHost.dll","textinputframework.dll","rasadhlp.dll","srvcli.dll","Windows.UI.dll","NapiNSP.dll","Bcp47Langs.dll","ktmw32.dll","wsock32.dll","MMDevAPI.dll","mscms.dll","ColorAdapterClient.dll","npmproxy.dll","dhcpcsvc6.DLL","dhcpcsvc.dll","twinapi.appcore.dll","version.dll","winnsi.dll","WindowManagementAPI.dll","avrt.dll","taskschd.dll","netprofm.dll","nlaapi.dll","propsys.dll","wtsapi32.dll","d3d11.dll","WinTypes.dll","dcomp.dll","CoreUIComponents.dll","CoreMessaging.dll","uxtheme.dll","dwmapi.dll","kernel.appcore.dll","windows.storage.dll","dxgi.dll","ntmarta.dll","rsaenh.dll","IPHLPAPI.DLL","dnsapi.dll","netutils.dll","mswsock.dll","cryptsp.dll","CRYPTBASE.dll","wldp.dll","winsta.dll","ntasn1.dll","ncrypt.dll","msasn1.dll","devobj.dll","umpdc.dll","powrprof.dll","userenv.dll","sspicli.dll","profapi.dll","wintrust.dll","win32u.dll","bcrypt.dll","gdi32full.dll","cfgmgr32.dll","KERNELBASE.dll","ucrtbase.dll","crypt32.dll","msvcp_win.dll","bcryptPrimitives.dll","imm32.dll","rpcrt4.dll","user32.dll","nsi.dll","shlwapi.dll","imagehlp.dll","kernel32.dll","shell32.dll","setupapi.dll","SHCore.dll","sechost.dll","clbcatq.dll","ws2_32.dll","oleaut32.dll","combase.dll","advapi32.dll","gdi32.dll","msctf.dll","psapi.dll","ole32.dll","msvcrt.dll","ntdll.dll"],"Microsoft Windows Software Compatibility Publisher":["msvcp140.dll","VCRUNTIME140.dll","VCRUNTIME140_1.dll"]} NimbusEnrollments: 1-callout-contextual-chatbot-suggestion-treatment-a-rollout-v2:treatment-a-tab-switching-copy,ai-chatbot-page-summarization-mvp-treatment-a-callout-badge-rollout-v4:treatment-a-callout-badge,backgroundupdate-enable-unelevated-installations-rollout-3-release:enabled,client-side-sampling-of-performance-metrics:control,context-id-rotation-every-3-days:control,desktop-credit-card-autofill-global-enablement-rollout-release:creditcard-enable,desktop-release-rollout-show-relay-to-all-browsers-next-sign-up-modal-cta:next-sign-up-modal-cta,disable-enrollment-status-telemetry-for-firefox-desktop-via-nimbustelemetry:control,downsample-uptakeremotecontent-events-glean-feature:control,enable-nimbus-unenrollment-synchronization:control,encrypted-client-hello-fallback-mechanism:control,enforce-crlite-results-and-limit-use-of-ocsp-rollout:enforce,fast-udp-for-firefox-treatment-fast-udp-release-rollout:treatment-fast-udp,firefox-backup-feature-gradual-rollout:treatment,fx-accounts-ping-release-rollout-2:control,hnt-weather-with-location-selector-non-eu-expansion-asian-language-family:control,local-network-access-enablement-etp-stricr-147-148:lna-enabled,long-term-holdback-2026-growth-desktop:delivery,new-tab-149220260220204414-to-release-148:rollout,new-tab-content-ping-rest-of-world-rollout:treatment,pin-frequently-used-websites-promo-rollout-day-3-users-all-locales:rollout-branch,private-window-visual-refresh-rollout:control,rollout-sponsored-topsites-in-southeast-asia-and-hong-kong:control,set-to-default-hamburger-menu-rollout:treatment-c,smart-shortcuts-v3-lr2-no-lr-rollout:no-lr,unified-api-for-spocs-and-top-sites-controlled-rollout-for-release-133:control,upgraded-sidebar-rollout-without-messaging:rollout-treatment,vertical-tabs-promo-rollout-day-3-profiles-all-locales:treatment-a,visual-card-updates:updated,visual-search-rollout:google-lens-rollout,windows-ui-automation-release-rollout:rollout,enable-ohttp-for-mars-communications-on-release:control,introduce-search-on-new-tab-page-copy-in-countries-with-no-content-re-run:variant-a Notes: -L1000-W0000100-T1) DWrite? DWrite+ WR? 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MSAFD Tcpip [UDP/IP] : 2 : 2 : 2 : 17 : 0x20609 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : e70f1aa0-ab8b-11cf-8ca3-00805f48a192 
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MSAFD Tcpip [TCP/IPv6] : 2 : 23 : 1 : 6 : 0x20066 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : f9eab0c0-26d4-11d0-bbbf-00aa006c34e4 
MSAFD Tcpip [UDP/IPv6] : 2 : 23 : 2 : 17 : 0x20609 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : f9eab0c0-26d4-11d0-bbbf-00aa006c34e4 
MSAFD Tcpip [RAW/IPv6] : 2 : 23 : 3 : 0 : 0x20609 : 0xc : %SystemRoot%\system32\mswsock.dll :  : f9eab0c0-26d4-11d0-bbbf-00aa006c34e4 
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RSVP TCPv6 Service Provider : 2 : 23 : 1 : 6 : 0x22066 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : 9d60a9e0-337a-11d0-bd88-0000c082e69a 
RSVP TCP Service Provider : 2 : 2 : 1 : 6 : 0x22066 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : 9d60a9e0-337a-11d0-bd88-0000c082e69a 
RSVP UDPv6 Service Provider : 2 : 23 : 2 : 17 : 0x22609 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : 9d60a9e0-337a-11d0-bd88-0000c082e69a 
RSVP UDP Service Provider : 2 : 2 : 2 : 17 : 0x22609 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : 9d60a9e0-337a-11d0-bd88-0000c082e69a 
Hyper-V RAW : 2 : 34 : 1 : 1 : 0x20026 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : 1234191b-4bf7-4ca7-86e0-dfd7c32b5445 
MSAFD L2CAP [Bluetooth] : 2 : 32 : 1 : 256 : 0x20006 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : 9fc48064-7298-43e4-b7bd-181f2089792a 
MSAFD RfComm [Bluetooth] : 2 : 32 : 1 : 3 : 0x20026 : 0x8 : %SystemRoot%\system32\mswsock.dll :  : 9fc48064-7298-43e4-b7bd-181f2089792a

useragent_locale: en-US This report also contains technical information about the state of the application when it crashed.

Good morning

Since this morning (05/03/2026) Thunderbird freezes within a minute or two of opening the program.

Everything in the program freezes up. I cannot even close it.

I am running Version 140.8.0esr on a Windows 10 PC.

Initially I was getting a pop up warning message that ask me to confirm if I wanted to send an email with attachments of over 20 MB. There were 3 or 4 such messages. I had not tried to send such emails.

I checked the Outbox in Local folders for old messages, but it was empty. I also checked the Unsent messages files in Local Folders in the Profile folder. I deleted the Unsent Messages.msf file to no effect. I renamed and replaced the Unsent messages file. Also no change.

I checked for crash logs but there are none.

I have run out of ideas as to what to try next. Does anyone have any advice?

It's pretty much in the title. My in box freezes up and no emails arrive. Microsoft will drop drop down a box asking me if I want to open THUNDERBIRD and says make sure I'm using a trusted server - app??? I don't understand any of this!

Last time the Fire Fox updates I noticed a weird change with the browser's behavior. the browser keeps crashing just anywhere I go! I keep losing my tabs and got kicked out of the browser losing the webpages where I was! Please fix this problem and for now at the moment I would be ok if I could go back to the last old version before that happen? I appreciate your help guys!

Since the latest Firefox latest update yesterday (02/24/2026), each time I try to open a new tab in Firefox it crashes. I get a "gah, your tab has crashed" message but when I hit the "restore" link nothing happens. How do I fix this at my end? Thank you.

I want to be able to switch a large chunk of my email archive "off" so it doesn't automatically load when Thunderbird launches (and consequently is invisible to search), but then bring it back online whenever I need to search deeply.

My Local Folders weigh in at 15 Gb. When Thunderbird launches, which currently takes a few minutes, Task Manager shows it takes up 1.8 Gb of memory, which I assume includes Thunderbird code plus an index it builds of all the messages in my folders. Not only does Thunderbird slow to a crawl and sometimes freeze up and crash, but this memory load appears to be slowing down my computer as a whole.

I can remove archives from the picture manually now: I can close Thunderbird, use File Manager to move the folders I want to be invisible to a location outside of Thunderbird's ken, and relaunch Thunderbird. And then reverse the process the next time I need to perform a deeper archive search. The fly in the ointment is that moving all those tens of thousands of EML files takes time and increases the possibility of file damage each time. It seems like moving the river to fill a bucket.

Another less than ideal solution now is to maintain two copies of Thunderbird, one for current and recent mail and another dedicated to archive folders. We'd have to perform a search in both Thunderbirds to be sure we'd found all instances of something.

I'd like to be able to simply toggle a local folder's visibility within the Thunderbird user interface.

Ideally, Thunderbird would be able to remove a folder from memory when I toggled it to invisible, increasing response time on the fly. But even if I had to reboot Thunderbird to get new visibility settings to affect its RAM footprint, being able to easily toggle folder visibility would still be a huge boon.

In the user interface, I imagine Toggle Folder Visibility added to the Tools menu. This function would display a checkbox next to each local folder showing its visibility status: checked for visible (the default), unchecked for hidden. It would be necessary to click Save for Thunderbird to act on changed visibility requests. Subsequently, hidden folders would be shown dimmed in the folder tree and their contents invisible. Searches would skip over them automatically.

Your thoughts?

Juniper

I'm reading https://support.mozilla.org/en-US/kb/mozillacrashreporter#w_when-firefox-crashes

Firefox crashes but I have never seen the crash reporter on my 6.18.10-200.fc43.x86_64 Fedora 43 system with budgie-desktop 10.9.3

Is the crash reporter discontinued?

I'm trying to use Booking.com to pay online for a holiday and Firefox keeps crashing as soon as I press confirm payment. Have tried several times using 2 different cards. What can I do?