What is your exact full version? Windows 7 supports up to version 128.

Please post your crash IDs https://support.mozilla.org/en-US/kb/mozilla-crash-reporter-tb#w_viewing-crash-reports

Thank you for the response. My Thunderbird is 115.18.0 (32 bit). I will post the next crash ID when it happens.

AdapterDeviceID: 0x1cb1 AdapterDriverVersion: 23.21.13.9158 AdapterSubsysID: 11bc10de AdapterVendorID: 0x10de Add-ons: replywithheader%40myjeeva.com:2.6.0,%7Ba62ef8ec-5fdc-40c2-873c-223b8a6925cc%7D:128.0.0,compactHeaders%40dillinger:5.7,lookout%40s3_fix_version:6.7,toggle-headers%40mattsch.com:4.2,owl%40beonex.com:1.4.1.1,eas4tbsync%40jobisoft.de:4.8,google%40search.mozilla.org:1.0,amazondotcom%40search.mozilla.org:1.1,bing%40search.mozilla.org:1.0,ddg%40search.mozilla.org:1.0,wikipedia%40search.mozilla.org:1.0,default-theme%40mozilla.org:1.3 AppInitDLLs: acaptuser32.dll AvailablePageFile: 573140992 AvailablePhysicalMemory: 21631045632 AvailableVirtualMemory: 538091520 BackgroundTaskMode: 0 BlockedDllList: BuildID: 20241211204238 CPUMicrocodeVersion: 0x1c ContentSandboxCapable: 1 ContentSandboxLevel: 1 ContentSandboxWin32kState: Win32k Lockdown disabled -- Operating system not supported CrashTime: 1755282439 DOMFissionEnabled: 1 DOMIPCEnabled: 1 EMCheckCompatibility: true GPUProcessLaunchCount: 1 GPUProcessStatus: Running GpuSandboxLevel: 1 HeadlessMode: 0 InstallTime: 1734464938 LastStartupWasCrash: 1 LauncherProcessState: 0 ModuleSignatureInfo: {"Apple Inc.":["mdnsNSP.dll"],"Microsoft Corporation":["api-ms-win-crt-multibyte-l1-1-0.dll","api-ms-win-crt-utility-l1-1-0.dll","api-ms-win-crt-math-l1-1-0.dll","api-ms-win-crt-environment-l1-1-0.dll","api-ms-win-crt-time-l1-1-0.dll","ucrtbase.dll","api-ms-win-crt-filesystem-l1-1-0.dll","api-ms-win-crt-locale-l1-1-0.dll","api-ms-win-crt-convert-l1-1-0.dll","api-ms-win-crt-stdio-l1-1-0.dll","api-ms-win-crt-string-l1-1-0.dll","api-ms-win-crt-heap-l1-1-0.dll","api-ms-win-core-synch-l1-2-0.dll","api-ms-win-core-file-l2-1-0.dll","api-ms-win-core-timezone-l1-1-0.dll","api-ms-win-core-file-l1-2-0.dll","msvcp140.dll","api-ms-win-core-processthreads-l1-1-1.dll","api-ms-win-core-localization-l1-2-0.dll","api-ms-win-crt-runtime-l1-1-0.dll","VCRUNTIME140.dll"],"Microsoft Windows":["cryptnet.dll","wdmaud.drv","midimap.dll","ncrypt.dll","drprov.dll","ntlanman.dll","davhlpr.dll","davclnt.dll","EhStorShell.dll","thumbcache.dll","fdWNet.dll","dfscli.dll","browcli.dll","shdocvw.dll","tiptsf.dll","WindowsCodecs.dll","ieproxy.dll","StructuredQuery.dll","FirewallAPI.dll","msxml6.dll","dui70.dll","explorerframe.dll","gpapi.dll","wevtapi.dll","dxgi.dll","bcryptprimitives.dll","ntshrui.dll","samcli.dll","NetworkExplorer.dll","DWrite.dll","sbdrop.dll","WcnApi.dll","fdWCN.dll","fundisc.dll","d2d1.dll","actxprxy.dll","AudioSes.dll","AcXtrnal.dll","wkscli.dll","srvcli.dll","api-ms-win-downlevel-shell32-l1-1-0.dll","IconCodecService.dll","slc.dll","fdProxy.dll","propsys.dll","linkinfo.dll","ksuser.dll","atl.dll","mscms.dll","MMDevAPI.dll","winsta.dll","comctl32.dll","cscapi.dll","api-ms-win-downlevel-advapi32-l2-1-0.dll","netutils.dll","msacm32.dll","avrt.dll","powrprof.dll","nlaapi.dll","cscobj.dll","msls31.dll","icm32.dll","xmllite.dll","duser.dll","npmproxy.dll","netprofm.dll","samlib.dll","Wpc.dll","winrnr.dll","pnrpnsp.dll","NapiNSP.dll","ktmw32.dll","SortWindows6Compat.dll","shunimpl.dll","sfc_os.dll","sfc.dll","AcGenral.dll","AcLayers.dll","api-ms-win-downlevel-shlwapi-l2-1-0.dll","apphelp.dll","msacm32.drv","ntmarta.dll","FWPUCLNT.DLL","rasadhlp.dll","secur32.dll","mpr.dll","dnsapi.dll","dwmapi.dll","uxtheme.dll","winmm.dll","winspool.drv","msimg32.dll","dhcpcsvc6.DLL","wship6.dll","WSHTCPIP.DLL","mswsock.dll","RpcRtRemote.dll","dhcpcsvc.dll","winnsi.dll","IPHLPAPI.DLL","dbghelp.dll","wsock32.dll","wtsapi32.dll","rsaenh.dll","cryptsp.dll","bcrypt.dll","version.dll","CRYPTBASE.dll","sspicli.dll","wininet.dll","comdlg32.dll","shell32.dll","Wldap32.dll","imagehlp.dll","lpk.dll","devobj.dll","rpcrt4.dll","msasn1.dll","usp10.dll","imm32.dll","user32.dll","profapi.dll","gdi32.dll","sechost.dll","userenv.dll","ole32.dll","oleaut32.dll","advapi32.dll","setupapi.dll","api-ms-win-downlevel-shlwapi-l1-1-0.dll","KERNELBASE.dll","msvcrt.dll","iertutil.dll","ws2_32.dll","wintrust.dll","api-ms-win-downlevel-version-l1-1-0.dll","api-ms-win-downlevel-normaliz-l1-1-0.dll","api-ms-win-downlevel-ole32-l1-1-0.dll","api-ms-win-downlevel-advapi32-l1-1-0.dll","api-ms-win-downlevel-user32-l1-1-0.dll","urlmon.dll","nsi.dll","shlwapi.dll","kernel32.dll","crypt32.dll","normaliz.dll","msctf.dll","cfgmgr32.dll","clbcatq.dll","psapi.dll","ntdll.dll","ieframe.dll"],"Mozilla Corporation":["thunderbird.exe","xul.dll","rnp.dll","nss3.dll","nssckbi.dll","freebl3.dll","softokn3.dll","lgpllibs.dll","mozglue.dll"],"NVIDIA Corporation":["nviewH.dll"]} MozCrashReason: MOZ_CRASH(OOM)

Notes: FP(D00-L1000-W0000100-T000) DWrite? DWrite+ WR? WR+ OOMAllocationSize: 117668 ProductID: {3550f703-e582-4d05-9a08-453d09bdfdc6} ProductName: Thunderbird ReleaseChannel: esr SafeMode: 0 SecondsSinceLastCrash: 97262 StartupCacheValid: 0 StartupCrash: 0 StartupTime: 1755185704 SubmittedFrom: Client SystemMemoryUsePercentage: 36 TelemetryEnvironment: {"build":{"applicationId":"{3550f703-e582-4d05-9a08-453d09bdfdc6}","applicationName":"Thunderbird","architecture":"x86","buildId":"20241211204238","version":"115.18.0","vendor":null,"displayVersion":"115.18.0","platformVersion":"115.18.0","xpcomAbi":"x86-msvc","updaterAvailable":true},"partner":{"distributionId":null,"distributionVersion":null,"partnerId":null,"distributor":null,"distributorChannel":null,"partnerNames":[]},"system":{"memoryMB":32720,"virtualMaxMB":4096,"cpu":{"isWindowsSMode":false,"count":8,"cores":4,"vendor":"GenuineIntel","name":"Intel(R) Core(TM) i7-4790K CPU @ 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nvd3dum,nvwgf2um,nvwgf2um","driverVendor":null,"driverVersion":"23.21.13.9158","driverDate":"4-30-2018","GPUActive":true}],"monitors":[{"screenWidth":2560,"screenHeight":1440,"refreshRate":59,"pseudoDisplay":false},{"screenWidth":2560,"screenHeight":1440,"refreshRate":59,"pseudoDisplay":false},{"screenWidth":2560,"screenHeight":1440,"refreshRate":59,"pseudoDisplay":false},{"screenWidth":1280,"screenHeight":1024,"refreshRate":60,"pseudoDisplay":false}],"features":{"compositor":"webrender","hwCompositing":{"status":"available"},"gpuProcess":{"status":"available"},"webrender":{"status":"available"},"wrCompositor":{"status":"unavailable:FEATURE_FAILURE_DCOMP_NOT_WIN10"},"openglCompositing":{"status":"unused"},"omtp":{"status":"unused"},"d3d11":{"status":"available","version":45056,"warp":false,"textureSharing":true,"blocklisted":false},"d2d":{"status":"available","version":"1.1"}}},"appleModelId":null,"hasWinPackageId":false,"isWow64":true,"isWowARM64":false},"settings":{"blocklistEnabled":true,"e10sEnabled":true,"e10sMultiProcesses":8,"fissionEnabled":true,"telemetryEnabled":false,"locale":"en-US","intl":{"requestedLocales":["en-US"],"availableLocales":["en-US"],"appLocales":["en-US"],"systemLocales":["en-US"],"regionalPrefsLocales":["en-US"],"acceptLanguages":["en-US","en"]},"update":{"channel":"esr","enabled":true,"autoDownload":true,"background":true},"userPrefs":{"browser.cache.disk.capacity":931840,"browser.fixup.alternate.enabled":false,"browser.search.region":"US","network.trr.strict_native_fallback":false,"widget.content.gtk-high-contrast.enabled":true},"sandbox":{"effectiveContentProcessLevel":1,"contentWin32kLockdownState":3},"launcherProcessState":0,"addonCompatibilityCheckEnabled":true,"isDefaultBrowser":null,"defaultSearchEngine":"google","defaultSearchEngineData":{"loadPath":"[addon]google@search.mozilla.org","name":"Google","origin":"default","submissionURL":"https://www.google.com/search?q="}},"profile":{"creationDate":17045},"addons":{"activeAddons":{"replywithheader@myjeeva.com":{"version":"2.6.0","scope":1,"type":"extension","updateDay":19614,"isSystem":false,"isWebExtension":true,"multiprocessCompatible":true},"{a62ef8ec-5fdc-40c2-873c-223b8a6925cc}":{"version":"128.0.0","scope":1,"type":"extension","updateDay":19918,"isSystem":false,"isWebExtension":true,"multiprocessCompatible":true},"compactHeaders@dillinger":{"version":"5.7","scope":1,"type":"extension","updateDay":20270,"isSystem":false,"isWebExtension":true,"multiprocessCompatible":true},"lookout@s3_fix_version":{"version":"6.7","scope":1,"type":"extension","updateDay":20270,"isSystem":false,"isWebExtension":true,"multiprocessCompatible":true},"toggle-headers@mattsch.com":{"version":"4.2","scope":1,"type":"extension","updateDay":20186,"isSystem":false,"isWebExtension":true,"multiprocessCompatible":true},"owl@beonex.com":{"version":"1.4.1.1","scope":1,"type":"extension","updateDay":20300,"isSystem":false,"isWebExtension":true,"multiprocessCompatible":true},"eas4tbsync@jobisoft.de":{"version":"4.8","scope":1,"type":"extension","updateDay":19694,"isSystem":false,"isWebExtension":true,"multiprocessCompatible":true},"google@search.mozilla.org":{"version":"1.0","scope":4,"type":"extension","updateDay":null,"isSystem":false,"isWebExtension":true,"multiprocessCompatible":true},"amazondotcom@search.mozilla.org":{"version":"1.1","scope":4,"type":"extension","updateDay":null,"isSystem":false,"isWebExtension":true,"multiprocessCompatible":true},"bing@search.mozilla.org":{"version":"1.0","scope":4,"type":"extension","updateDay":n

Did you read the link Wayne posted? If you did, why post something other that the crash id's?

I did but Thunderbird crashes before I can get to the help menu to find the Crash ID. The Crash Reporter is all that is available to me and that doesnt even work. When I "tell mozilla about this crash so they can fix it" it replies with "there was a problem submitting your report" and thunderbird restarts and crashes again. The only option I have was to post the "details" and hope that someone could help me.

Please try to get some crash IDs without starting Thunderbird https://support.mozilla.org/en-US/kb/mozilla-crash-reporter-tb#w_viewing-reports-outside-of-thunderbird

And do you still crash if you have started Thunderbird in Troubleshoot Mode? https://support.mozilla.org/en-US/kb/troubleshoot-mode-thunderbird#w_start-thunderbird-in-troubleshoot-mode

I got to the crash reports, all unsubmitted. Here are just a few of the 80 or so on the report list.

86387131-0df1-4ab3-8b22-897d4c04e1a7 8/18/2025, 9:09 AM bd488a77-3043-4889-9980-542f05dbe45f 8/18/2025, 9:06 AM 4c674aea-df16-4eb6-b546-94e71d50bae6 8/16/2025, 11:54 AM 5aa8a54d-7650-40bb-9ea3-802b17e93066 8/15/2025, 11:27 AM 42ec9027-9599-48d2-8f92-228c549b86f3 8/14/2025, 8:26 AM