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Windows 7 (x32 only) Firefox 63.0.0, 63.0.1 crashed - not started

  • 12 replies
  • 1 has this problem
  • 119 views
  • Last reply by andry_ua

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<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">

<System>
 <Provider Name="Application Error" /> 
 <EventID Qualifiers="0">1000</EventID> 
 <Level>2</Level> 
 <Task>100</Task> 
 <Keywords>0x80000000000000</Keywords> 
 <TimeCreated SystemTime="2018-11-07T10:47:42.000000000Z" /> 
 <EventRecordID>255455</EventRecordID> 
 <Channel>Application</Channel> 
 <Computer>tepl***.ua</Computer> 
 <Security /> 
 </System>
<EventData>
 <Data>firefox.exe</Data> 
 <Data>63.0.1.6877</Data> 
 <Data>5bd8a046</Data> 
 <Data>a_kerflzjl.dll</Data> 
 <Data>0.0.0.0</Data> 
 <Data>5b1aa77b</Data> 
 <Data>406d1388</Data> 
 <Data>0000845d</Data> 
 <Data>17e8</Data> 
 <Data>01d476874da092da</Data> 
 <Data>C:\Program Files\Mozilla Firefox\firefox.exe</Data> 
 <Data>C:\windows\system32\a_kerflzjl.dll</Data> 
 <Data>8d386e20-e27a-11e8-9cc9-a26ef4a66b88</Data> 
 </EventData>
</Event>

What is this file "C:\windows\system32\a_kerflzjl.dll"? On both versions the same issue! Windows 7 (x32) - on x64 everything OK

How i can fix this issue? Thanks!

Modified by andry_ua

Chosen solution

firefox 63.0.x (x32) on Win7 x64 - same issue, BUT - firefox 63.0.x (x64) on Win7 x64 - working good!

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All Replies (12)

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hi, this file isn't part of firefox. it's looking like a radnomized filename and there are 0 results for it on google which should be a big red flag. please scan your system for malware with multiple different tools like the free version of malwarebytes and the eset online scanner: https://www.malwarebytes.com/mwb-download/ https://www.eset.com/int/home/online-scanner/

Troubleshoot Firefox issues caused by malware

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philipp said

hi, this file isn't part of firefox. it's looking like a radnomized filename and there are 0 results for it on google which should be a big red flag. please scan your system for malware with multiple different tools like the free version of malwarebytes and the eset online scanner: https://www.malwarebytes.com/mwb-download/ https://www.eset.com/int/home/online-scanner/ Troubleshoot Firefox issues caused by malware

thanks for reply, but system is clean! (i checked it - nothing!) after another try to start FF - event log show another file!

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and one more think - 62.0.x - everything OK, only after upgrade to 63.0.x - crashed!

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how did you check - did you use some different security tools as recommended? please also try to locate the incriminated file on your disk an upload it to virustotal.com which will scan it with a few dozen engines...

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philipp said

how did you check - did you use some different security tools as recommended? please also try to locate the incriminated file on your disk an upload it to virustotal.com which will scan it with a few dozen engines...

check system by cisco amp, microsofr SE, eset online scanner - result - no viruses.

I sad - 62.0.x - everything OK, 63.0.x - on win7 x32 crashing, on win7 x64 - ok, win10 x64 - ok!

virus total - https://www.virustotal.com/#/file/e242f8ec682295c4a8556199072348c2cea4e0f69775d67c458d4adbfcb04c0a/detection

maybe developers do something wrong?

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please upload the "a_kerflzjl.dll" file (or whatever it's called now when it's randomly changing names) to virustotal, not the firefox setup file (we already know that it is clean).

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philipp said

please upload the "a_kerflzjl.dll" file (or whatever it's called now when it's randomly changing names) to virustotal, not the firefox setup file (we already know that it is clean).

no file with this name on my filesystem! (and other files fron event this issue)

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Hi! Any ideas for fix issue on Windows 7 x32 after upgrade to 63.0.x?

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i still think the symptoms point towards malware on the system unfortunately

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philipp said

i still think the symptoms point towards malware on the system unfortunately

like i said - system hasn't viruses and malwares...!!! I install on clean system (Windows 7 x32 - new windows) - same issue!

and one more thing - mozilla crash report doesnt start - work windows report only!

Modified by andry_ua

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I found problem - on clean system I installed firefox (win7 x32) after that installed Cisco AMP!!! And this antivirus deleted this dll file from c:\windows\system32\***.dll and firefox crashed. Question - why firefox create this file? On x64 (win7 and win10) this dll file FF doesn't create!

Modified by andry_ua

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Chosen Solution

firefox 63.0.x (x32) on Win7 x64 - same issue, BUT - firefox 63.0.x (x64) on Win7 x64 - working good!