Thunderbird Community Forum

A few weeks ago, my Thunderbird went very, very slow. It has from time to time crashed. Now this happens whenever I start a new email. If I downloaded Firefox, would that help?

I have followed all the other recommendations with, no luck. I am on Windows 11 and use Eset virus software. Thunderbird is not listed as running it Task Manager, and there is no Profile.lock (think that was what it was called) in the profile directory, and I have deleted the existing profiles and recreated it. I have uninstalled and reinstall Thunderbird, and I have rebooted my computer. I am frustrated and concerned I will loose saved emails and my address book! Help.

I am running Fedora 42 KDE spin ("plasma"). The "Discover Software Center" app offers Thunderbird as both a regular and a flatpak install, and I somewhat arbitrarily chose flatpak.

I am dealing with several legacy email accounts that have 20 years of messages, so I need to control where the profile was created, so immediately after installing I ran with -P to create a profile and specified a path name of /lore/jeff/thunderbird. /lore is the mountpoint of /dev/sda2 and it is in my /etc/fstab. /lore/jeff previously existed because that's where I put my Dropbox folder.

Every time I shut down TB and restart it later it always fails because lock and .parentlock are never deleted. Until now, I just dealt with it by deleting the files in bash, but today I wanted to make sure that TB always starts offline and decided that user.js would be the absolute safest way to guarantee that, so I pulled up profiles.ini to get a list of all profile paths to make sure that I put a copy of user.js in each and every one whether it's in use or not. What I discovered is that the profile I created does NOT have a Path of /lore/jeff/thunderbird but instead /run/user/1000/doc/e1a4ab74/thunderbird and not only that but at the very bottom of the file are these three lines [InstallBD520B11F73A6B64] Default=/run/user/1000/doc/e1a4ab74/thunderbird Locked=1

The interesting thing is that when I put user.js into the /run/user... path and then looked at /lore/jeff/thunderbird to check on lock and .parentlock, I see that there is magically a copy of user.js there. I'm not exactly sure what is going on because when I do `ls -ldi` on the two files, their inode numbers are vastly different. I don't know enough about how flatpak operates internally, but my gut tells me it has something to do with it, and my question that I'm finally getting around to asking is if I edit the profiles.ini file to use /lore/jeff/thunderbird in an attempt to get TB to correctly clean up the lock files, is that going to cause a problem because of whatever flatpak is doing? And should I complain to flatpak about it?

Thanks for reading :-)

Hello -- I'm hoping someone will be able to help!

I'm running Thunderbird 140.9.1esr (32-bit) on Windows 10 Pro version 22H2 (OS Build 19045.6466) with an Intel Core i7 processor.

Thunderbird suddenly started crashing repeatedly since yesterday. It ran long enough for me to install version 140.9.1esr, but still crashes repeatedly within a couple minutes of running the application, even if I don't do anything such as trying to reply to a message.

Please see below what I get in the Windows Event Viewer, pretty much the same for each crash. I have also pasted the contents of the following file (the others mentioned above don't exist).

C:\ProgramData\Microsoft\Windows\WER\ReportArchive\AppHang_thunderbird.exe_5d8d3f9d863d0b28eacbd2a393cdc3d04ef559_c250478b_deffcb88-26f8-4204-bffd-7e6fd5a2ea88

I've gone to Troubleshooting Information, I've "cleared startup cache", I've tired "Troubleshoot Mode" and still Thunderbird crashes. There's nothing in Crash Reports.

Any help would be truly appreciated!

Best regards,

Miles Montelius

==========

The program thunderbird.exe version 140.9.1.0 stopped interacting with Windows and was closed. To see if more information about the problem is available, check the problem history in the Security and Maintenance control panel.

Process ID: 2fe4
Start Time: 01dcc9b06a74fe27
Termination Time: 19
Application Path: C:\Program Files (x86)\Mozilla Thunderbird\thunderbird.exe
Report Id: 1f27bed4-950e-4cf2-b2be-0e17b3c5bff0
Faulting package full name: 
Faulting package-relative application ID: 
Hang type: Unknown

===========

Fault bucket 2206417569010378635, type 5 Event Name: AppHangB1 Response: Not available Cab Id: 0

Problem signature: P1: thunderbird.exe P2: 140.9.1.0 P3: 69d0a82a P4: aa1e P5: 134217728 P6: P7: P8: P9: P10:

Attached files: \\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER1ECA.tmp.WERInternalMetadata.xml \\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER1EDB.tmp.xml \\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER1EE9.tmp.csv \\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER1F19.tmp.txt \\?\C:\Users\Miles\AppData\Local\Temp\WER2554.tmp.appcompat.txt

These files may be available here: \\?\C:\ProgramData\Microsoft\Windows\WER\ReportArchive\AppHang_thunderbird.exe_5d8d3f9d863d0b28eacbd2a393cdc3d04ef559_c250478b_deffcb88-26f8-4204-bffd-7e6fd5a2ea88

Analysis symbol: Rechecking for solution: 0 Report Id: 1f27bed4-950e-4cf2-b2be-0e17b3c5bff0 Report Status: 268435456 Hashed bucket: 6bb25f0f2ae99d39de9ec516c30b678b Cab Guid: 0

================================= Report.wer

Version=1 EventType=AppHangB1 EventTime=134203853995104936 ReportType=3 Consent=1 UploadTime=134203854012764044 ReportStatus=268435456 ReportIdentifier=deffcb88-26f8-4204-bffd-7e6fd5a2ea88 IntegratorReportIdentifier=1f27bed4-950e-4cf2-b2be-0e17b3c5bff0 Wow64Host=34404 Wow64Guest=332 NsAppName=thunderbird.exe OriginalFilename=thunderbird.exe AppSessionGuid=00002fe4-0001-0089-27fe-746ab0c9dc01 TargetAppId=W:00069140475b22fa6eb7e8a09288ccaa9eed00000000!0000296d4ceec558ce2477919ca1d55d16c4eb0ece48!thunderbird.exe TargetAppVer=2026//04//04:05:56:58!6df25!thunderbird.exe BootId=4294967295 TargetAsId=1039 IsFatal=1 EtwNonCollectReason=1 Response.BucketId=6bb25f0f2ae99d39de9ec516c30b678b Response.BucketTable=5 Response.LegacyBucketId=2206417569010378635 Response.type=4 Sig[0].Name=Application Name Sig[0].Value=thunderbird.exe Sig[1].Name=Application Version Sig[1].Value=140.9.1.0 Sig[2].Name=Application Timestamp Sig[2].Value=69d0a82a Sig[3].Name=Hang Signature Sig[3].Value=aa1e Sig[4].Name=Hang Type Sig[4].Value=134217728 DynamicSig[1].Name=OS Version DynamicSig[1].Value=10.0.19045.2.0.0.256.48 DynamicSig[2].Name=Locale ID DynamicSig[2].Value=2057 DynamicSig[22].Name=Additional Hang Signature 1 DynamicSig[22].Value=aa1ee6b70f5730e6b2c3407f0286853a DynamicSig[23].Name=Additional Hang Signature 2 DynamicSig[23].Value=d531 DynamicSig[24].Name=Additional Hang Signature 3 DynamicSig[24].Value=d5313f546285bab3fbd31e098595851c DynamicSig[25].Name=Additional Hang Signature 4 DynamicSig[25].Value=aa1e DynamicSig[26].Name=Additional Hang Signature 5 DynamicSig[26].Value=aa1ee6b70f5730e6b2c3407f0286853a DynamicSig[27].Name=Additional Hang Signature 6 DynamicSig[27].Value=d531 DynamicSig[28].Name=Additional Hang Signature 7 DynamicSig[28].Value=d5313f546285bab3fbd31e098595851c UI[3]=Thunderbird is not responding UI[4]=If you close the program, you might lose information. UI[5]=Close the program UI[6]=Close the program UI[7]=Close the program LoadedModule[0]=C:\Program Files (x86)\Mozilla Thunderbird\thunderbird.exe LoadedModule[1]=C:\WINDOWS\SYSTEM32\ntdll.dll LoadedModule[2]=C:\WINDOWS\System32\KERNEL32.DLL LoadedModule[3]=C:\WINDOWS\System32\KERNELBASE.dll LoadedModule[4]=C:\WINDOWS\System32\USP10.dll LoadedModule[5]=C:\WINDOWS\System32\ADVAPI32.dll LoadedModule[6]=C:\Program Files (x86)\Mozilla Thunderbird\mozglue.dll LoadedModule[7]=C:\WINDOWS\System32\msvcrt.dll LoadedModule[8]=C:\WINDOWS\System32\sechost.dll LoadedModule[9]=C:\WINDOWS\System32\RPCRT4.dll LoadedModule[10]=C:\WINDOWS\System32\bcrypt.dll LoadedModule[11]=C:\WINDOWS\System32\ucrtbase.dll LoadedModule[12]=C:\Program Files (x86)\Mozilla Thunderbird\VCRUNTIME140.dll LoadedModule[13]=C:\WINDOWS\System32\CRYPT32.dll LoadedModule[14]=C:\Program Files (x86)\Mozilla Thunderbird\MSVCP140.dll LoadedModule[15]=C:\WINDOWS\System32\GDI32.DLL LoadedModule[16]=C:\WINDOWS\SYSTEM32\CRYPTBASE.dll LoadedModule[17]=C:\WINDOWS\System32\win32u.dll LoadedModule[18]=C:\WINDOWS\System32\gdi32full.dll LoadedModule[19]=C:\WINDOWS\System32\msvcp_win.dll LoadedModule[20]=C:\WINDOWS\System32\USER32.dll LoadedModule[21]=C:\WINDOWS\System32\IMM32.DLL LoadedModule[22]=C:\WINDOWS\System32\bcryptPrimitives.dll LoadedModule[23]=C:\Program Files (x86)\Mozilla Thunderbird\nss3.dll LoadedModule[24]=C:\WINDOWS\SYSTEM32\WSOCK32.dll LoadedModule[25]=C:\WINDOWS\System32\WS2_32.dll LoadedModule[26]=C:\Program Files (x86)\Mozilla Thunderbird\gkcodecs.dll LoadedModule[27]=C:\Program Files (x86)\Mozilla Thunderbird\lgpllibs.dll LoadedModule[28]=C:\Program Files (x86)\Mozilla Thunderbird\xul.dll LoadedModule[29]=C:\WINDOWS\System32\shcore.dll LoadedModule[30]=C:\WINDOWS\System32\combase.dll LoadedModule[31]=C:\WINDOWS\System32\WINTRUST.dll LoadedModule[32]=C:\WINDOWS\SYSTEM32\ktmw32.dll LoadedModule[33]=C:\WINDOWS\SYSTEM32\VERSION.dll LoadedModule[34]=C:\WINDOWS\SYSTEM32\PROPSYS.dll LoadedModule[35]=C:\WINDOWS\SYSTEM32\ncrypt.dll LoadedModule[36]=C:\WINDOWS\System32\MSASN1.dll LoadedModule[37]=C:\WINDOWS\SYSTEM32\NTASN1.dll LoadedModule[38]=C:\WINDOWS\SYSTEM32\ntmarta.dll LoadedModule[39]=C:\WINDOWS\SYSTEM32\kernel.appcore.dll LoadedModule[40]=C:\WINDOWS\system32\uxtheme.dll LoadedModule[41]=C:\WINDOWS\System32\OLEAUT32.dll LoadedModule[42]=C:\WINDOWS\System32\psapi.dll LoadedModule[43]=C:\WINDOWS\SYSTEM32\dwrite.dll LoadedModule[44]=C:\WINDOWS\SYSTEM32\dbghelp.dll LoadedModule[45]=C:\WINDOWS\SYSTEM32\dbgcore.DLL LoadedModule[46]=C:\WINDOWS\System32\SHELL32.dll LoadedModule[47]=C:\WINDOWS\System32\windows.storage.dll LoadedModule[48]=C:\WINDOWS\System32\Wldp.dll LoadedModule[49]=C:\WINDOWS\System32\shlwapi.dll LoadedModule[50]=C:\WINDOWS\System32\ole32.dll LoadedModule[51]=C:\WINDOWS\SYSTEM32\profapi.dll LoadedModule[52]=C:\WINDOWS\SYSTEM32\WINMM.dll LoadedModule[53]=C:\WINDOWS\System32\clbcatq.dll LoadedModule[54]=C:\WINDOWS\system32\napinsp.dll LoadedModule[55]=C:\WINDOWS\system32\pnrpnsp.dll LoadedModule[56]=C:\Windows\System32\Windows.UI.dll LoadedModule[57]=C:\Windows\System32\WindowManagementAPI.dll LoadedModule[58]=C:\Windows\System32\InputHost.dll LoadedModule[59]=C:\Windows\System32\TextInputFramework.dll LoadedModule[60]=C:\WINDOWS\SYSTEM32\wintypes.dll LoadedModule[61]=C:\WINDOWS\SYSTEM32\twinapi.appcore.dll LoadedModule[62]=C:\Windows\System32\CoreMessaging.dll LoadedModule[63]=C:\Windows\System32\CoreUIComponents.dll LoadedModule[64]=C:\WINDOWS\system32\wshbth.dll LoadedModule[65]=C:\WINDOWS\System32\netprofm.dll LoadedModule[66]=C:\WINDOWS\system32\NLAapi.dll LoadedModule[67]=C:\WINDOWS\SYSTEM32\IPHLPAPI.DLL LoadedModule[68]=C:\WINDOWS\System32\mswsock.dll LoadedModule[69]=C:\WINDOWS\SYSTEM32\DNSAPI.dll LoadedModule[70]=C:\WINDOWS\System32\NSI.dll LoadedModule[71]=C:\WINDOWS\System32\winrnr.dll LoadedModule[72]=C:\Windows\System32\Windows.UI.Immersive.dll LoadedModule[73]=C:\WINDOWS\System32\npmproxy.dll LoadedModule[74]=C:\WINDOWS\SYSTEM32\WINNSI.DLL LoadedModule[75]=C:\WINDOWS\SYSTEM32\dhcpcsvc6.DLL LoadedModule[76]=C:\WINDOWS\SYSTEM32\dhcpcsvc.DLL LoadedModule[77]=C:\Program Files (x86)\Mozilla Thunderbird\softokn3.dll LoadedModule[78]=C:\Program Files (x86)\Mozilla Thunderbird\freebl3.dll LoadedModule[79]=C:\WINDOWS\System32\MSCTF.dll LoadedModule[80]=C:\WINDOWS\System32\MMDevApi.dll LoadedModule[81]=C:\WINDOWS\System32\DEVOBJ.dll LoadedModule[82]=C:\WINDOWS\System32\cfgmgr32.dll LoadedModule[83]=C:\WINDOWS\SYSTEM32\AUDIOSES.DLL LoadedModule[84]=C:\WINDOWS\SYSTEM32\powrprof.dll LoadedModule[85]=C:\WINDOWS\SYSTEM32\UMPDC.dll LoadedModule[86]=C:\WINDOWS\System32\SETUPAPI.dll LoadedModule[87]=C:\Windows\System32\wscapi.dll LoadedModule[88]=C:\WINDOWS\System32\urlmon.dll LoadedModule[89]=C:\WINDOWS\System32\iertutil.dll LoadedModule[90]=C:\WINDOWS\System32\srvcli.dll LoadedModule[91]=C:\WINDOWS\System32\netutils.dll LoadedModule[92]=C:\Windows\System32\Windows.Globalization.dll LoadedModule[93]=C:\Windows\System32\bcp47mrm.dll LoadedModule[94]=C:\Windows\System32\Bcp47Langs.dll LoadedModule[95]=C:\WINDOWS\SYSTEM32\dxgi.dll LoadedModule[96]=C:\WINDOWS\SYSTEM32\dwmapi.dll LoadedModule[97]=C:\WINDOWS\SYSTEM32\dcomp.dll LoadedModule[98]=C:\WINDOWS\SYSTEM32\mscms.dll LoadedModule[99]=C:\WINDOWS\SYSTEM32\ColorAdapterClient.dll LoadedModule[100]=C:\WINDOWS\SYSTEM32\USERENV.dll LoadedModule[101]=C:\WINDOWS\system32\twinapi.dll LoadedModule[102]=C:\WINDOWS\SYSTEM32\WTSAPI32.dll LoadedModule[103]=C:\WINDOWS\SYSTEM32\WINSTA.dll LoadedModule[104]=C:\WINDOWS\system32\directmanipulation.dll LoadedModule[105]=C:\WINDOWS\SYSTEM32\d2d1.dll LoadedModule[106]=C:\WINDOWS\SYSTEM32\XmlLite.dll LoadedModule[107]=C:\WINDOWS\system32\dataexchange.dll LoadedModule[108]=C:\WINDOWS\system32\d3d11.dll LoadedModule[109]=C:\WINDOWS\system32\explorerframe.dll LoadedModule[110]=C:\Windows\System32\OneCoreUAPCommonProxyStub.dll LoadedModule[111]=C:\Program Files (x86)\Mozilla Thunderbird\rnp.dll LoadedModule[112]=C:\WINDOWS\System32\WININET.dll LoadedModule[113]=C:\WINDOWS\SYSTEM32\SspiCli.dll LoadedModule[114]=C:\WINDOWS\SYSTEM32\ondemandconnroutehelper.dll LoadedModule[115]=C:\WINDOWS\SYSTEM32\winhttp.dll LoadedModule[116]=C:\Windows\System32\rasadhlp.dll LoadedModule[117]=C:\WINDOWS\System32\fwpuclnt.dll LoadedModule[118]=C:\WINDOWS\SYSTEM32\avrt.dll LoadedModule[119]=C:\Windows\System32\Windows.Security.Integrity.dll LoadedModule[120]=C:\WINDOWS\SYSTEM32\LINKINFO.dll LoadedModule[121]=C:\Windows\System32\OneCoreCommonProxyStub.dll LoadedModule[122]=C:\WINDOWS\SYSTEM32\ntshrui.dll LoadedModule[123]=C:\WINDOWS\SYSTEM32\cscapi.dll LoadedModule[124]=C:\WINDOWS\SYSTEM32\policymanager.dll LoadedModule[125]=C:\WINDOWS\SYSTEM32\msvcp110_win.dll LoadedModule[126]=C:\WINDOWS\SYSTEM32\d3dcompiler_47.dll LoadedModule[127]=C:\WINDOWS\SYSTEM32\CRYPTSP.dll LoadedModule[128]=C:\Program Files (x86)\Mozilla Thunderbird\libGLESv2.dll LoadedModule[129]=C:\WINDOWS\SYSTEM32\d3d9.dll LoadedModule[130]=C:\Program Files (x86)\Mozilla Thunderbird\libEGL.dll LoadedModule[131]=C:\WINDOWS\SYSTEM32\cryptnet.dll LoadedModule[132]=C:\WINDOWS\SYSTEM32\drvstore.dll LoadedModule[133]=C:\WINDOWS\System32\imagehlp.dll LoadedModule[134]=C:\WINDOWS\system32\rsaenh.dll LoadedModule[135]=C:\WINDOWS\SYSTEM32\dxcore.dll LoadedModule[136]=C:\WINDOWS\SYSTEM32\resourcepolicyclient.dll State[0].Key=Transport.DoneStage1 State[0].Value=1 OsInfo[0].Key=vermaj OsInfo[0].Value=10 OsInfo[1].Key=vermin OsInfo[1].Value=0 OsInfo[2].Key=verbld OsInfo[2].Value=19045 OsInfo[3].Key=ubr OsInfo[3].Value=6466 OsInfo[4].Key=versp OsInfo[4].Value=0 OsInfo[5].Key=arch OsInfo[5].Value=9 OsInfo[6].Key=lcid OsInfo[6].Value=2057 OsInfo[7].Key=geoid OsInfo[7].Value=242 OsInfo[8].Key=sku OsInfo[8].Value=48 OsInfo[9].Key=domain OsInfo[9].Value=0 OsInfo[10].Key=prodsuite OsInfo[10].Value=256 OsInfo[11].Key=ntprodtype OsInfo[11].Value=1 OsInfo[12].Key=platid OsInfo[12].Value=10 OsInfo[13].Key=sr OsInfo[13].Value=0 OsInfo[14].Key=tmsi OsInfo[14].Value=223670134 OsInfo[15].Key=osinsty OsInfo[15].Value=1 OsInfo[16].Key=iever OsInfo[16].Value=11.3636.19041.0-11.0.1000 OsInfo[17].Key=portos OsInfo[17].Value=0 OsInfo[18].Key=ram OsInfo[18].Value=8174 OsInfo[19].Key=svolsz OsInfo[19].Value=231 OsInfo[20].Key=wimbt OsInfo[20].Value=0 OsInfo[21].Key=blddt OsInfo[21].Value=191206 OsInfo[22].Key=bldtm OsInfo[22].Value=1406 OsInfo[23].Key=bldbrch OsInfo[23].Value=vb_release OsInfo[24].Key=bldchk OsInfo[24].Value=0 OsInfo[25].Key=wpvermaj OsInfo[25].Value=0 OsInfo[26].Key=wpvermin OsInfo[26].Value=0 OsInfo[27].Key=wpbuildmaj OsInfo[27].Value=0 OsInfo[28].Key=wpbuildmin OsInfo[28].Value=0 OsInfo[29].Key=osver OsInfo[29].Value=10.0.19041.6466.amd64fre.vb_release.191206-1406 OsInfo[30].Key=buildflightid OsInfo[30].Value=1a6da8dc-e1ef-4c46-89e4-4a56762ca494 OsInfo[31].Key=edition OsInfo[31].Value=Professional OsInfo[32].Key=ring OsInfo[33].Key=expid OsInfo[34].Key=fconid OsInfo[35].Key=containerid OsInfo[36].Key=containertype OsInfo[37].Key=edu OsInfo[37].Value=0 FriendlyEventName=Stopped responding and was closed ConsentKey=AppHangXProcB1 AppName=Thunderbird AppPath=C:\Program Files (x86)\Mozilla Thunderbird\thunderbird.exe ReportDescription=A problem caused this program to stop interacting with Windows. NsPartner=windows NsGroup=windows8 ApplicationIdentity=BD651D92C43397BE7A26BAF48837601A MetadataHash=-60511867

Hello -- I'm hoping someone will be able to help!

I'm running Thunderbird 140.9.1esr (32-bit) on Windows 10 Pro version 22H2 (OS Build 19045.6466) with an Intel Core i7 processor.

Thunderbird suddenly started crashing repeatedly since yesterday. It ran long enough for me to install version 140.9.1esr, but still crashes repeatedly within a couple minutes of running the application, even if I don't do anything such as trying to reply to a message.

Please see below what I get in the Windows Event Viewer, pretty much the same for each crash. I have also pasted the contents of the following file (the others mentioned above don't exist).

C:\ProgramData\Microsoft\Windows\WER\ReportArchive\AppHang_thunderbird.exe_5d8d3f9d863d0b28eacbd2a393cdc3d04ef559_c250478b_deffcb88-26f8-4204-bffd-7e6fd5a2ea88

I've gone to Troubleshooting Information, I've "cleared startup cache", I've tired "Troubleshoot Mode" and still Thunderbird crashes. There's nothing in Crash Reports.

Any help would be truly appreciated!

Best regards,

Miles Montelius

==========

The program thunderbird.exe version 140.9.1.0 stopped interacting with Windows and was closed. To see if more information about the problem is available, check the problem history in the Security and Maintenance control panel.

Process ID: 2fe4
Start Time: 01dcc9b06a74fe27
Termination Time: 19
Application Path: C:\Program Files (x86)\Mozilla Thunderbird\thunderbird.exe
Report Id: 1f27bed4-950e-4cf2-b2be-0e17b3c5bff0
Faulting package full name: 
Faulting package-relative application ID: 
Hang type: Unknown

===========

Fault bucket 2206417569010378635, type 5 Event Name: AppHangB1 Response: Not available Cab Id: 0

Problem signature: P1: thunderbird.exe P2: 140.9.1.0 P3: 69d0a82a P4: aa1e P5: 134217728 P6: P7: P8: P9: P10:

Attached files: \\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER1ECA.tmp.WERInternalMetadata.xml \\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER1EDB.tmp.xml \\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER1EE9.tmp.csv \\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER1F19.tmp.txt \\?\C:\Users\Miles\AppData\Local\Temp\WER2554.tmp.appcompat.txt

These files may be available here: \\?\C:\ProgramData\Microsoft\Windows\WER\ReportArchive\AppHang_thunderbird.exe_5d8d3f9d863d0b28eacbd2a393cdc3d04ef559_c250478b_deffcb88-26f8-4204-bffd-7e6fd5a2ea88

Analysis symbol: Rechecking for solution: 0 Report Id: 1f27bed4-950e-4cf2-b2be-0e17b3c5bff0 Report Status: 268435456 Hashed bucket: 6bb25f0f2ae99d39de9ec516c30b678b Cab Guid: 0

================================= Report.wer

Version=1 EventType=AppHangB1 EventTime=134203853995104936 ReportType=3 Consent=1 UploadTime=134203854012764044 ReportStatus=268435456 ReportIdentifier=deffcb88-26f8-4204-bffd-7e6fd5a2ea88 IntegratorReportIdentifier=1f27bed4-950e-4cf2-b2be-0e17b3c5bff0 Wow64Host=34404 Wow64Guest=332 NsAppName=thunderbird.exe OriginalFilename=thunderbird.exe AppSessionGuid=00002fe4-0001-0089-27fe-746ab0c9dc01 TargetAppId=W:00069140475b22fa6eb7e8a09288ccaa9eed00000000!0000296d4ceec558ce2477919ca1d55d16c4eb0ece48!thunderbird.exe TargetAppVer=2026//04//04:05:56:58!6df25!thunderbird.exe BootId=4294967295 TargetAsId=1039 IsFatal=1 EtwNonCollectReason=1 Response.BucketId=6bb25f0f2ae99d39de9ec516c30b678b Response.BucketTable=5 Response.LegacyBucketId=2206417569010378635 Response.type=4 Sig[0].Name=Application Name Sig[0].Value=thunderbird.exe Sig[1].Name=Application Version Sig[1].Value=140.9.1.0 Sig[2].Name=Application Timestamp Sig[2].Value=69d0a82a Sig[3].Name=Hang Signature Sig[3].Value=aa1e Sig[4].Name=Hang Type Sig[4].Value=134217728 DynamicSig[1].Name=OS Version DynamicSig[1].Value=10.0.19045.2.0.0.256.48 DynamicSig[2].Name=Locale ID DynamicSig[2].Value=2057 DynamicSig[22].Name=Additional Hang Signature 1 DynamicSig[22].Value=aa1ee6b70f5730e6b2c3407f0286853a DynamicSig[23].Name=Additional Hang Signature 2 DynamicSig[23].Value=d531 DynamicSig[24].Name=Additional Hang Signature 3 DynamicSig[24].Value=d5313f546285bab3fbd31e098595851c DynamicSig[25].Name=Additional Hang Signature 4 DynamicSig[25].Value=aa1e DynamicSig[26].Name=Additional Hang Signature 5 DynamicSig[26].Value=aa1ee6b70f5730e6b2c3407f0286853a DynamicSig[27].Name=Additional Hang Signature 6 DynamicSig[27].Value=d531 DynamicSig[28].Name=Additional Hang Signature 7 DynamicSig[28].Value=d5313f546285bab3fbd31e098595851c UI[3]=Thunderbird is not responding UI[4]=If you close the program, you might lose information. UI[5]=Close the program UI[6]=Close the program UI[7]=Close the program LoadedModule[0]=C:\Program Files (x86)\Mozilla Thunderbird\thunderbird.exe LoadedModule[1]=C:\WINDOWS\SYSTEM32\ntdll.dll LoadedModule[2]=C:\WINDOWS\System32\KERNEL32.DLL LoadedModule[3]=C:\WINDOWS\System32\KERNELBASE.dll LoadedModule[4]=C:\WINDOWS\System32\USP10.dll LoadedModule[5]=C:\WINDOWS\System32\ADVAPI32.dll LoadedModule[6]=C:\Program Files (x86)\Mozilla Thunderbird\mozglue.dll LoadedModule[7]=C:\WINDOWS\System32\msvcrt.dll LoadedModule[8]=C:\WINDOWS\System32\sechost.dll LoadedModule[9]=C:\WINDOWS\System32\RPCRT4.dll LoadedModule[10]=C:\WINDOWS\System32\bcrypt.dll LoadedModule[11]=C:\WINDOWS\System32\ucrtbase.dll LoadedModule[12]=C:\Program Files (x86)\Mozilla Thunderbird\VCRUNTIME140.dll LoadedModule[13]=C:\WINDOWS\System32\CRYPT32.dll LoadedModule[14]=C:\Program Files (x86)\Mozilla Thunderbird\MSVCP140.dll LoadedModule[15]=C:\WINDOWS\System32\GDI32.DLL LoadedModule[16]=C:\WINDOWS\SYSTEM32\CRYPTBASE.dll LoadedModule[17]=C:\WINDOWS\System32\win32u.dll LoadedModule[18]=C:\WINDOWS\System32\gdi32full.dll LoadedModule[19]=C:\WINDOWS\System32\msvcp_win.dll LoadedModule[20]=C:\WINDOWS\System32\USER32.dll LoadedModule[21]=C:\WINDOWS\System32\IMM32.DLL LoadedModule[22]=C:\WINDOWS\System32\bcryptPrimitives.dll LoadedModule[23]=C:\Program Files (x86)\Mozilla Thunderbird\nss3.dll LoadedModule[24]=C:\WINDOWS\SYSTEM32\WSOCK32.dll LoadedModule[25]=C:\WINDOWS\System32\WS2_32.dll LoadedModule[26]=C:\Program Files (x86)\Mozilla Thunderbird\gkcodecs.dll LoadedModule[27]=C:\Program Files (x86)\Mozilla Thunderbird\lgpllibs.dll LoadedModule[28]=C:\Program Files (x86)\Mozilla Thunderbird\xul.dll LoadedModule[29]=C:\WINDOWS\System32\shcore.dll LoadedModule[30]=C:\WINDOWS\System32\combase.dll LoadedModule[31]=C:\WINDOWS\System32\WINTRUST.dll LoadedModule[32]=C:\WINDOWS\SYSTEM32\ktmw32.dll LoadedModule[33]=C:\WINDOWS\SYSTEM32\VERSION.dll LoadedModule[34]=C:\WINDOWS\SYSTEM32\PROPSYS.dll 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OsInfo[34].Key=fconid OsInfo[35].Key=containerid OsInfo[36].Key=containertype OsInfo[37].Key=edu OsInfo[37].Value=0 FriendlyEventName=Stopped responding and was closed ConsentKey=AppHangXProcB1 AppName=Thunderbird AppPath=C:\Program Files (x86)\Mozilla Thunderbird\thunderbird.exe ReportDescription=A problem caused this program to stop interacting with Windows. NsPartner=windows NsGroup=windows8 ApplicationIdentity=BD651D92C43397BE7A26BAF48837601A MetadataHash=-60511867

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

Whilst using TB the screen went white with dozens of little tabs along the top of the screeen with what look like page icons, as the app became 'not responding'. Re-loading didn't help - same screen. Re-starting didn't help. I uninstalled and re-installed TB but it is stil the same. Opening in Windows (11) safe mode produced virtually the same result except for a few seconds I was able to open the hamburger menu and select trouble shooting. Opened in trouble shooting mode showed several alerts of 'failed to connect with servers' (outlook.office365.com imap.gmail.com and Yahoo). Then it shut down as before 'not responding'. When open, TB is using some 80% of available memory., and I can only close it by using Task Manager. I'm a complete dunce at this stuff so, if anyone knows a way out of this hole, please use simple English! Thanks, Jeff

I sometimes find that after I have filled in the email address and subject of the email and sometimes start writing the email, it goes back to the original page and I have to start again.

good morning , I am using a mac mini 8 gb ram and the latest ios, avg antivirus and vpn. Following the latest ios update in feb/2026 thunderbird opens then locks with a rotating color circle and force quit is needed to close it. Emails are via the imap and smtp protocols, with both not being recognised by the server. Can you help, I need access to files from thunderbird. Can this be done offline, avoiding the server problem. thank you for your help. Jeff

After Windows installed an update in the middle of the night I can't open Thunderbird and I've tried uninstalling it and reinstalling with success.

It says: Thunderbird is already running, but is not responding. The old Thunderbird process must be closed to open a new window.

I've rebooted the PC, shut down the PC, ended the task and still nothing. It seem that Thunderbird didn't shut down correctly and the system still thinks that it's open and running. Anyone know how I can fix this issue?

Thanks,

Gregg

Program is freezing after a few minutes, even without using, Tried repairing all the folders and everything I could find on google, installed on another laptop, But still the same.

Can you please help me ? Why does my Thunderbird email account keep crashing upon startup ? It comes up everytime and after 1 minute it crashes . I receive email but only if it is that 1 minute time frame . It just started yesterday , 3/23/2026.

Stephanie

I was using TB like normally on windows 11 when it crashed. Now every time i try to open the app it prompts me to send in a crash report, but every time i press "restart thunderbird" a new window with crash report shows up. I have tried writing a comment, checking and unchecking all the boxes and pressing quit thunderbird. But i still get sent into the loop.

For about 2 weeks, EVERY time I try to write an email, after typing a few lines or so, the whole window 'grays out' and becomes UN-responsive. I get no error message. Waiting for it to respond doesn't work and I have to close out and re-start Thunderbird. Sometimes Thunderbird will have saved some portion of my email in my 'Drafts' folder, but not reliably, so I have to frequently 'Control + S' - save it to avoid having to re-type the entire message again. Troubleshoot Mode doesn't help, nor does clearing the cache. I've been hoping an update would come up that would solve this, either from Thunderbird or Windows (11), but not so far. Please tell me how I should resolve this - I have used Thunderbird for years (and regularly contribute too) and don't want to have to change to different email client.

2 months ago, after an update the programme opens then locks with the cursor being a multicolor rotating wheel. All is locked and the only option is to 'Force Quit" to close the programme down. Can you help ? thank you

Verwalte über Thunderbird mehrere Mailadressen, jedoch läßt sich keine dieser Mailadressen öffnen. Es kommt ständig die Mitteilunbg , 'Keine Nachricht gefunden' . Bei Neustart kommt die Mitteilung Thunderbird wird bereits ausgeführt, und dann erneute 'Keine Nachricht gefunden ' ... !???

I've always experience occasional TB crashes. According to my log history there was 1 in July, 3 in Aug, 2 in Sep, 2 in Oct, and 6 in Nov. I never really paid attention since the reboot was quick. But now in December I am losing work and it is a major problem. I've had 30 crashes in Dec and 21 in the past week. I have only 3 add ons and they have not changed, and a Copernic connector. I disable the Copernic connector and it didn't help. I have the same 140.6 on my Surface Go with the same add ons, except for Copernic and it runs fine. On both PCs I use Malewarebytes and WinDef. I have put exclusions for them in their setups. Even with MBAM completely disabled I've still had crashes.

I cleared the Cache and no help. I've even had occasional crashes in Troubleshooting mode. Here are my last 5 crash IDs

bp-070bf941-4e8b-41a3-8b84-3e3440251224 bp-a936f7c2-9ee3-4c38-b304-dab830251224 bp-8be9cf9e-8f2f-49bb-95cf-47e780251224 bp-12f8fc2c-c505-40f0-8c67-44b730251224 bp-9013fb78-086c-4327-9de8-62db30251223

Interestingly I’m also experiencing crashes with Firefox, especially ChatGPT. I cleared the ChatGPT history and that helped but did not solve the problem. I cleared the Firefox cache and in troubleshoot mode still have issues.

Otherwise my win11 PC seems to be working fine. I’ve run chkdsk and all is ok. Also scannow is ok.

Is my next step a profile rebuild?