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Firefox version 68 crashing on launch

  • 2 replies
  • 1 has this problem
  • Last reply by cor-el

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Log Name: Application Source: Application Error Date: 7/12/2019 11:23:37 AM Event ID: 1000 Task Category: (100) Level: Error Keywords: Classic User: N/A Computer: computername.domain Description: Faulting application name: firefox.exe, version:, time stamp: 0x5d1fddd0 Faulting module name: sxwmon64.dll, version: 5.1.451.0, time stamp: 0x5af5705b Exception code: 0xc0000005 Fault offset: 0x000000000004814a Faulting process id: 0x1454 Faulting application start time: 0x01d538c5c6c5e6d4 Faulting application path: C:\Program Files (x86)\Mozilla Firefox\firefox.exe Faulting module path: C:\Windows\system32\sxwmon64.dll Report Id: 047875a0-a4b9-11e9-8bfd-18037347c9ed Event Xml: <Event xmlns="">

   <Provider Name="Application Error" />
   <EventID Qualifiers="0">1000</EventID>
   <TimeCreated SystemTime="2019-07-12T15:23:37.000000000Z" />
   <Security />
   <Data>C:\Program Files (x86)\Mozilla Firefox\firefox.exe</Data>


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Let’s do a full clean re-install;

Note: Firefox comes in three or more folders on all computers. They are;

Maintenance: (Programs Folder) <Windows Only> Firefox itself: (Programs Folder) And two folders in the profile of each user on the computer for each Firefox profile for that user.

If you remove the Firefox folder, the user profiles would not be affected.

Download Firefox For All languages And Systems {web link}

Save the file. Then Close Firefox.

Using your file browser, open the Programs Folder on your computer.

Windows: C:\Program Files C:\Program Files (x86) Note: Check Both Folders

Mac: Open the "Applications" folder.

Linux: Check your user manual. If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it. See Install Firefox on Linux;

If you downloaded and installed the binary package from the Firefox download page, simply remove the folder Firefox in your home directory. ++++++++++++++++++++++++++++ Look for, and remove any Mozilla or Firefox program folders. Do not remove the Mozilla Thunderbird folder if there is one.

Do Not remove any profile folders.

After rebooting the computer, run a registry scanner if you have one. Then run the installer. +++++++++++++++++++++++++++ If there is a problem, start your Computer in safe mode and try again. This shows how to Start all Computers in Safe Mode; Free Online Encyclopedia

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This could be a problem with your Lumension Endpoint Security software.

  • sxwmon64.dll module is part of Lumension Endpoint Security