Thunderbird repeatedly crashes on startup. Very similar to problem of Justine.kh.li that Matt responded to. Their is no crash ID as Thunderbird will not star
Removed; reloaded. Ran Malwarebytes, System Mechanic, and AVG. Removed, wiped directory, reloaded. Never runs.
Latest report: AbortMessage: [7216] ###!!! ABORT: Could not load UTC timezone, brace yourself and prepare for crash: file c:\builds\moz2_slave\tb-rel-c-esr45-w32_bld-0000000\build\calendar\base\backend\libical\calUtils.h, line 110 Accessibility: Active AdapterDeviceID: 0x0166 AdapterDriverVersion: 10.18.10.4276 AdapterSubsysID: 05551028 AdapterVendorID: 0x8086 Add-ons: %7Be2fda1a4-762b-4020-b5ad-a41df1933103%7D:4.7.1.1,%7B972ce4c6-7e08-4474-a285-3208198ce6fd%7D:45.1.1 AddonsShouldHaveBlockedE10s: 1 AvailablePageFile: 5368467456 AvailablePhysicalMemory: 1717649408 AvailableVirtualMemory: 3906818048 BIOS_Manufacturer: Dell Inc. BlockedDllList: BreakpadReserveAddress: 50331648 BreakpadReserveSize: 67108864 BuildID: 20160526140950 CrashTime: 1465427761 EMCheckCompatibility: true Email: pamedp1@cox.net FramePoisonBase: 00000000f0de0000 FramePoisonSize: 65536 InstallTime: 1465231609 Notes: AdapterVendorID: 0x8086, AdapterDeviceID: 0x0166, AdapterSubsysID: 05551028, AdapterDriverVersion: 10.18.10.4276 xpcom_runtime_abort([7216] ###!!! ABORT: Could not load UTC timezone, brace yourself and prepare for crash: file c:\builds\moz2_slave\tb-rel-c-esr45-w32_bld-0000000\build\calendar\base\backend\libical\calUtils.h, line 110) ProductID: {3550f703-e582-4d05-9a08-453d09bdfdc6} ProductName: Thunderbird ReleaseChannel: release SafeMode: 0 SecondsSinceLastCrash: 21552 StartupTime: 1465427757 SystemMemoryUsePercentage: 58 TelemetryEnvironment: {"build":{"applicationId":"{3550f703-e582-4d05-9a08-453d09bdfdc6}","applicationName":"Thunderbird","architecture":"x86","buildId":"20160526140950","version":"45.1.1","vendor":null,"platformVersion":"45.1.1","xpcomAbi":"x86-msvc","hotfixVersion":null},"partner":{"distributionId":null,"distributionVersion":null,"partnerId":null,"distributor":null,"distributorChannel":null,"partnerNames":[]},"system":{"memoryMB":3961,"virtualMaxMB":4096,"cpu":{"count":4,"cores":2,"vendor":"GenuineIntel","family":6,"model":58,"stepping":9,"l2cacheKB":256,"l3cacheKB":3072,"speedMHz":2395,"extensions":["hasMMX","hasSSE","hasSSE2","hasSSE3","hasSSSE3","hasSSE4_1","hasSSE4_2"]},"os":{"name":"Windows_NT","version":"10.0","locale":"en-US","servicePackMajor":0,"servicePackMinor":0,"installYear":2016},"hdd":{"profile":{"model":"ST500LM012 HN-M500MBB","revision":"2AR20003"},"binary":{"model":"ST500LM012 HN-M500MBB","revision":"2AR20003"},"system":{"model":"ST500LM012 HN-M500MBB","revision":"2AR20003"}},"gfx":{"D2DEnabled":false,"DWriteEnabled":false,"adapters":[{"description":"Intel(R) HD Graphics 4000","vendorID":"0x8086","deviceID":"0x0166","subsysID":"05551028","RAM":null,"driver":"igdumdim64 igd10iumd64 igd10iumd64 igdumdim32 igd10iumd32 igd10iumd32","driverVersion":"10.18.10.4276","driverDate":"8-17-2015","GPUActive":true}],"monitors":[{"screenWidth":1366,"screenHeight":768,"refreshRate":60,"pseudoDisplay":false},{"screenWidth":1280,"screenHeight":1024,"refreshRate":60,"pseudoDisplay":false}],"features":{"compositor":"none","d3d11":{"status":"disabled"},"d2d":{"status":"unavailable","version":"1.0"}}},"isWow64":true},"settings":{"blocklistEnabled":true,"e10sEnabled":false,"telemetryEnabled":false,"isInOptoutSample":false,"locale":"en-US","update":{"channel":"release","enabled":true,"autoDownload":true},"userPrefs":{"browser.cache.disk.capacity":358400},"addonCompatibilityCheckEnabled":true,"isDefaultBrowser":null},"profile":{"creationDate":15895},"addons":{"activeAddons":{"{e2fda1a4-762b-4020-b5ad-a41df1933103}":{"blocklisted":false,"description":"An integrated calendar for Thunderbird","name":"Lightning","userDisabled":false,"appDisabled":false,"version":"4.7.1.1","scope":1,"type":"extension","foreignInstall":false,"hasBinaryComponents":false,"installDay":16671,"updateDay":16958}},"theme":{"id":"{972ce4c6-7e08-4474-a285-3208198ce6fd}","blocklisted":false,"description":"The default theme.","name":"Default","userDisabled":false,"appDisabled":false,"version":"45.1.1","scope":4,"foreignInstall":false,"hasBinaryComponents":false,"installDay":15895,"updateDay":16947},"activePlugins":[],"activeGMPlugins":{},"activeExperiment":{},"persona":null}} Theme: classic/1.0 Throttleable: 1 TotalPageFile: 8045817856 TotalPhysicalMemory: 4153503744 TotalVirtualMemory: 4294836224 URL: Vendor: Version: 45.1.1 Winsock_LSP: MSAFD Tcpip [TCP/IP] : 2 : 1 : %SystemRoot%\system32\mswsock.dll
MSAFD Tcpip [UDP/IP] : 2 : 2 : MSAFD Tcpip [RAW/IP] : 2 : 3 : %SystemRoot%\system32\mswsock.dll MSAFD Tcpip [TCP/IPv6] : 2 : 1 : MSAFD Tcpip [UDP/IPv6] : 2 : 2 : %SystemRoot%\system32\mswsock.dll MSAFD Tcpip [RAW/IPv6] : 2 : 3 : RSVP TCPv6 Service Provider : 2 : 1 : %SystemRoot%\system32\mswsock.dll RSVP TCP Service Provider : 2 : 1 : RSVP UDPv6 Service Provider : 2 : 2 : %SystemRoot%\system32\mswsock.dll RSVP UDP Service Provider : 2 : 2 : Hyper-V RAW : 2 : 1 : %SystemRoot%\system32\mswsock.dll MSAFD RfComm [Bluetooth] : 2 : 1 :
useragent_locale: en-US
This report also contains technical information about the state of the application when it crashed.
Trip coming up which may require switching to Gmail.
Réiteach roghnaithe
Hold the shift key while starting Thunderbird and continue in safe mode when prompted.
Go to the add-ons manager and remove Lightning.
On the toolbar 
then 
If you need a calendar, restart Thunderbird and reinstall lightning.
Read this answer in context 👍 1All Replies (1)
Réiteach Roghnaithe
Hold the shift key while starting Thunderbird and continue in safe mode when prompted.
Go to the add-ons manager and remove Lightning.
On the toolbar then
If you need a calendar, restart Thunderbird and reinstall lightning.