hello, could you provide your latest few submitted crash reports? please enter about:crashes into the location bar, copy the latest few report ids from there starting with bp- & paste them here into a forum reply. this will give us a better understanding what may be triggering those crashes.

I tried about:crashes but it says "No crash reports have been submitted."

do you, by chance have, the Enhanced Mitigation Experience Toolkit (EMET) software installed on the affected system?

No I don't. I figured out that in the windows safe mode this crash doesn't happen.

thanks, so it's likely that some third-party software on your system is interfering. could you install this addon which adds a button to the menu to artificially crash firefox and then provide a report (which will hopefully be generated this way): https://addons.mozilla.org/firefox/addon/crash-me-now-simple/

I installed this addon

if it didn't then please click on "+ customize" on the bottom left of the menu and then drag the button/icon there.

AdapterDeviceID: 0x191b AdapterDriverVersion: 21.20.16.4550 AdapterSubsysID: 11301043 AdapterVendorID: 0x8086 Add-ons: %7B972ce4c6-7e08-4474-a285-3208198ce6fd%7D:53.0.2,aushelper%40mozilla.org:2.0,e10srollout%40mozilla.org:1.14,firefox%40getpocket.com:1.0.5,webcompat%40mozilla.org:1.0,crashme-simple%40ted.mielczarek.org:1.0 AddonsShouldHaveBlockedE10s: 0 AvailablePageFile: 17792585728 AvailablePhysicalMemory: 14640205824 AvailableVirtualMemory: 3665170432 BIOS_Manufacturer: American Megatrends Inc. BlockedDllList: babyfox.dll; BreakpadReserveAddress: 42205184 BreakpadReserveSize: 67108864 BuildID: 20170504105526 CPUMicrocodeVersion: 0x74 ContentSandboxCapable: 1 ContentSandboxLevel: 1 CrashTime: 1494262636 DOMIPCEnabled: 1 E10SCohort: addons-set50allmpc-test EMCheckCompatibility: true EventLoopNestingLevel: 1 FramePoisonBase: 00000000f0de0000 FramePoisonSize: 65536 GraphicsCriticalError: |[0][GFX1-]: GPU process disabled after 1 attempts (t=5.28194) |[1][GFX1-]: [D3D11] failed to get compositor device. (t=5.55784) |[2][GFX1-]: [D3D11] Failed to init compositor with reason: FEATURE_FAILURE_D3D11_NO_DEVICE (t=5.55784) InstallTime: 1494011982 Notes: AdapterVendorID: 0x8086, AdapterDeviceID: 0x191b, AdapterSubsysID: 11301043, AdapterDriverVersion: 21.20.16.4550 Has dual GPUs. GPU #2: AdapterVendorID2: 0x10de, AdapterDeviceID2: 0x139a, AdapterSubsysID2: 11301043, AdapterDriverVersion2: 10.18.13.5435FP(D00-L1000-W00001000-T000) DWrite? DWrite+ D3D11 Layers? D3D11 Layers- ProductID: {ec8030f7-c20a-464f-9b0e-13a3a9e97384} ProductName: Firefox ReleaseChannel: release SafeMode: 0 SecondsSinceLastCrash: 164 StackTraces: 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thanks, but it's again the id from about:crashes we'd need now :-)

is this what I should copy here? bp-c84ea3d1-518e-4faa-9dba-ecbfc1170508 bp-3dbcbb71-7f7f-4777-9c13-8948a1170508

thank you. there seem to be remnants of the babylon toolbar present on your system. please uninstall it if you have it present in your system control panel or else run a full scan of your system with different security tools like the free version of malwarebytes and adwcleaner which are specialised in toolbars and browser adware.

the other obvious 3rd party hooking into firefox would be your eset security product. can you please disable "scanning of browser scripts" and "banking and payment protection" once for testing purposes as described at https://forum.eset.com/topic/10592-process-for-browser-st-50-and-cannot-be-killed/#comment-54159 to see if this can make a difference.

Thank you very much, I uninstalled babylon and ff is working fine now.