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Firefox 24 continuously changed back to Firefox 23

Posted

I have upgraded and installed from FF23 to FF24 once it was released. Since last week, I encountered problem. One day I started FF24 and it prompted that it had to restart in order to complete previous update of Firefox (however, there was no update triggered by me). I could not start up FF24. Then I restarted my PC. I found that FF23 was installed. Uninstalling and Reinstalling FF24 does not help in this case. I tried to uninstall using normal uninstaller and uninstall manually (deleted all files in program folders and registry). No matter any effect, it somehow and sometimes fallback to FF23. I even have no idea where the FF23 installer was triggered.

Today even worst, when I was using FF24, at around 2pm I found the shortcut bar icon changed to windows setup icon. I closed all firefox and started up again. It prompted the same and I found that it changed back to FF23!

Scanned for virus. No found.

Now I installed FF25b8 to see if the problem persists.

I have upgraded and installed from FF23 to FF24 once it was released. Since last week, I encountered problem. One day I started FF24 and it prompted that it had to restart in order to complete previous update of Firefox (however, there was no update triggered by me). I could not start up FF24. Then I restarted my PC. I found that FF23 was installed. Uninstalling and Reinstalling FF24 does not help in this case. I tried to uninstall using normal uninstaller and uninstall manually (deleted all files in program folders and registry). No matter any effect, it somehow and sometimes fallback to FF23. I even have no idea where the FF23 installer was triggered. Today even worst, when I was using FF24, at around 2pm I found the shortcut bar icon changed to windows setup icon. I closed all firefox and started up again. It prompted the same and I found that it changed back to FF23! Scanned for virus. No found. Now I installed FF25b8 to see if the problem persists.

Chosen solution

Finally it looks I found the problem. It is related to our stupid IT doing something strange.

Thanks for your help

Read this answer in context 0

Additional System Details

Installed Plug-ins

  • Google Update
  • Shockwave Flash 11.9 r900
  • iTunes Detector Plug-in
  • Adobe PDF Plug-In For Firefox and Netscape 11.0.05
  • 5.1.20913.0
  • Next Generation Java Plug-in 10.40.2 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • npalidcp
  • Alipay Security Control
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • npaliedit
  • The plug-in allows you to open and edit files using Microsoft Office applications
  • Office Authorization plug-in for NPAPI browsers

Application

  • User Agent: Mozilla/5.0 (Windows NT 6.1; rv:25.0) Gecko/20100101 Firefox/25.0

More Information

Here is a install text file I found in Mozilla Firefox folder
This morning it changed back to FF23. I uninstalled it and reinstall FF24.
This is the log
===
Mozilla Firefox Installation Started: 2013-10-17 11:33:31
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
Installation Details
-------------------------------------------------------------------------------
Install Dir: C:\Program Files\Mozilla Firefox
Locale : en-US
App Version: 24.0
GRE Version: 24.0
OS Name : Windows 7
Target CPU : x86
-------------------------------------------------------------------------------
Installing Main Files
-------------------------------------------------------------------------------
Installed File: C:\Program Files\Mozilla Firefox\AccessibleMarshal.dll
Installed File: C:\Program Files\Mozilla Firefox\application.ini
Installed File: C:\Program Files\Mozilla Firefox\breakpadinjector.dll
Created Directory: C:\Program Files\Mozilla Firefox\browser
Installed File: C:\Program Files\Mozilla Firefox\crashreporter.exe
Installed File: C:\Program Files\Mozilla Firefox\crashreporter.ini
Installed File: C:\Program Files\Mozilla Firefox\D3DCompiler_43.dll
Created Directory: C:\Program Files\Mozilla Firefox\defaults
Installed File: C:\Program Files\Mozilla Firefox\dependentlibs.list
Created Directory: C:\Program Files\Mozilla Firefox\dictionaries
Installed File: C:\Program Files\Mozilla Firefox\firefox.exe
Installed File: C:\Program Files\Mozilla Firefox\freebl3.chk
Installed File: C:\Program Files\Mozilla Firefox\freebl3.dll
Installed File: C:\Program Files\Mozilla Firefox\gkmedias.dll
Installed File: C:\Program Files\Mozilla Firefox\libEGL.dll
Installed File: C:\Program Files\Mozilla Firefox\libGLESv2.dll
Installed File: C:\Program Files\Mozilla Firefox\maintenanceservice.exe
Installed File: C:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe
Installed File: C:\Program Files\Mozilla Firefox\mozalloc.dll
Installed File: C:\Program Files\Mozilla Firefox\mozglue.dll
Installed File: C:\Program Files\Mozilla Firefox\mozjs.dll
Installed File: C:\Program Files\Mozilla Firefox\msvcp100.dll
Installed File: C:\Program Files\Mozilla Firefox\msvcr100.dll
Installed File: C:\Program Files\Mozilla Firefox\nss3.dll
Installed File: C:\Program Files\Mozilla Firefox\nssckbi.dll
Installed File: C:\Program Files\Mozilla Firefox\nssdbm3.chk
Installed File: C:\Program Files\Mozilla Firefox\nssdbm3.dll
Installed File: C:\Program Files\Mozilla Firefox\omni.ja
Installed File: C:\Program Files\Mozilla Firefox\platform.ini
Installed File: C:\Program Files\Mozilla Firefox\plugin-container.exe
Installed File: C:\Program Files\Mozilla Firefox\plugin-hang-ui.exe
Installed File: C:\Program Files\Mozilla Firefox\precomplete
Installed File: C:\Program Files\Mozilla Firefox\removed-files
Installed File: C:\Program Files\Mozilla Firefox\softokn3.chk
Installed File: C:\Program Files\Mozilla Firefox\softokn3.dll
Installed File: C:\Program Files\Mozilla Firefox\update-settings.ini
Installed File: C:\Program Files\Mozilla Firefox\updater.exe
Installed File: C:\Program Files\Mozilla Firefox\updater.ini
Installed File: C:\Program Files\Mozilla Firefox\webapp-uninstaller.exe
Created Directory: C:\Program Files\Mozilla Firefox\webapprt
Installed File: C:\Program Files\Mozilla Firefox\webapprt-stub.exe
Installed File: C:\Program Files\Mozilla Firefox\xul.dll
Installed File: C:\Program Files\Mozilla Firefox\webapprt\omni.ja
Installed File: C:\Program Files\Mozilla Firefox\webapprt\webapprt.ini
Installed File: C:\Program Files\Mozilla Firefox\uninstall\helper.exe
Installed File: C:\Program Files\Mozilla Firefox\dictionaries\en-US.aff
Installed File: C:\Program Files\Mozilla Firefox\dictionaries\en-US.dic
Created Directory: C:\Program Files\Mozilla Firefox\defaults\pref
Installed File: C:\Program Files\Mozilla Firefox\defaults\pref\channel-prefs.js
Installed File: C:\Program Files\Mozilla Firefox\browser\blocklist.xml
Installed File: C:\Program Files\Mozilla Firefox\browser\chrome.manifest
Created Directory: C:\Program Files\Mozilla Firefox\browser\components
Installed File: C:\Program Files\Mozilla Firefox\browser\crashreporter-override.ini
Created Directory: C:\Program Files\Mozilla Firefox\browser\extensions
Installed File: C:\Program Files\Mozilla Firefox\browser\omni.ja
Created Directory: C:\Program Files\Mozilla Firefox\browser\searchplugins
Installed File: C:\Program Files\Mozilla Firefox\browser\searchplugins\amazondotcom.xml
Installed File: C:\Program Files\Mozilla Firefox\browser\searchplugins\bing.xml
Installed File: C:\Program Files\Mozilla Firefox\browser\searchplugins\eBay.xml
Installed File: C:\Program Files\Mozilla Firefox\browser\searchplugins\google.xml
Installed File: C:\Program Files\Mozilla Firefox\browser\searchplugins\twitter.xml
Installed File: C:\Program Files\Mozilla Firefox\browser\searchplugins\wikipedia.xml
Installed File: C:\Program Files\Mozilla Firefox\browser\searchplugins\yahoo.xml
Created Directory: C:\Program Files\Mozilla Firefox\browser\extensions\{972ce4c6-7e08-4474-a285-3208198ce6fd}
Installed File: C:\Program Files\Mozilla Firefox\browser\extensions\{972ce4c6-7e08-4474-a285-3208198ce6fd}\icon.png
Installed File: C:\Program Files\Mozilla Firefox\browser\extensions\{972ce4c6-7e08-4474-a285-3208198ce6fd}\install.rdf
Installed File: C:\Program Files\Mozilla Firefox\browser\components\browsercomps.dll
Installed File: C:\Program Files\Mozilla Firefox\browser\components\components.manifest
-------------------------------------------------------------------------------
DLL Registration
-------------------------------------------------------------------------------
Registered: C:\Program Files\Mozilla Firefox\AccessibleMarshal.dll
-------------------------------------------------------------------------------
Adding Registry Entries
-------------------------------------------------------------------------------
Added Registry String: HKLM | Software\Mozilla\Mozilla Firefox\24.0 (en-US)\Main | Install Directory | C:\Program Files\Mozilla Firefox
Added Registry String: HKLM | Software\Mozilla\Mozilla Firefox\24.0 (en-US)\Main | PathToExe | C:\Program Files\Mozilla Firefox\firefox.exe
Added Registry String: HKLM | Software\Mozilla\Mozilla Firefox\24.0 (en-US)\Uninstall | Description | Mozilla Firefox 24.0 (x86 en-US)
Added Registry String: HKLM | Software\Mozilla\Mozilla Firefox\24.0 (en-US) | | 24.0 (en-US)
Added Registry String: HKLM | Software\Mozilla\Mozilla Firefox 24.0\bin | PathToExe | C:\Program Files\Mozilla Firefox\firefox.exe
Added Registry String: HKLM | Software\Mozilla\Mozilla Firefox 24.0\extensions | Components | C:\Program Files\Mozilla Firefox\components
Added Registry String: HKLM | Software\Mozilla\Mozilla Firefox 24.0\extensions | Plugins | C:\Program Files\Mozilla Firefox\plugins
Added Registry String: HKLM | Software\Mozilla\Mozilla Firefox 24.0 | GeckoVer | 24.0
Added Registry String: HKLM | Software\Mozilla\Mozilla Firefox | | 24.0
Added Registry String: HKLM | Software\Mozilla\Mozilla Firefox | CurrentVersion | 24.0 (en-US)
Added Registry String: HKLM | Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 24.0 (x86 en-US) | Comments | Mozilla Firefox 24.0 (x86 en-US)
Added Registry String: HKLM | Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 24.0 (x86 en-US) | DisplayIcon | C:\Program Files\Mozilla Firefox\firefox.exe,0
Added Registry String: HKLM | Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 24.0 (x86 en-US) | DisplayName | Mozilla Firefox 24.0 (x86 en-US)
Added Registry String: HKLM | Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 24.0 (x86 en-US) | DisplayVersion | 24.0
Added Registry String: HKLM | Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 24.0 (x86 en-US) | InstallLocation | C:\Program Files\Mozilla Firefox
Added Registry String: HKLM | Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 24.0 (x86 en-US) | Publisher | Mozilla
Added Registry String: HKLM | Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 24.0 (x86 en-US) | UninstallString | "C:\Program Files\Mozilla Firefox\uninstall\helper.exe"
Added Registry String: HKLM | Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 24.0 (x86 en-US) | URLInfoAbout | https://www.mozilla.org/en-US/
Added Registry String: HKLM | Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 24.0 (x86 en-US) | URLUpdateInfo | https://www.mozilla.org/en-US/firefox/
Added Registry DWord: HKLM | Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 24.0 (x86 en-US) | NoModify | 1
Added Registry DWord: HKLM | Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 24.0 (x86 en-US) | NoRepair | 1
Added Registry DWord: HKLM | Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 24.0 (x86 en-US) | EstimatedSize | 49162
Added Registry String: HKLM | Software\Microsoft\Windows\CurrentVersion\App Paths\firefox.exe | | C:\Program Files\Mozilla Firefox\firefox.exe
Added Registry String: HKLM | Software\Microsoft\Windows\CurrentVersion\App Paths\firefox.exe | Path | C:\Program Files\Mozilla Firefox
Added Registry Key: HKLM | Software\Microsoft\MediaPlayer\ShimInclusionList\FIREFOX.EXE
Added Registry Key: HKLM | Software\Microsoft\MediaPlayer\ShimInclusionList\plugin-container.exe
-------------------------------------------------------------------------------
Setting Permitted LSP Categories
-------------------------------------------------------------------------------
Permitted LSP Categories: 0x00000000
-------------------------------------------------------------------------------
Adding Shortcuts
-------------------------------------------------------------------------------
Added Shortcut: C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Mozilla Firefox.lnk
Added Shortcut: C:\Users\Public\Desktop\Mozilla Firefox.lnk
-------------------------------------------------------------------------------
Setting as the default browser
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
Mozilla Firefox Installation Finished: 2013-10-17 11:33:49
===
This is the log I found at around 2pm
===
Mozilla Firefox Installation Started: 2013-10-17 13:16:17
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
Installation Details
-------------------------------------------------------------------------------
Install Dir: C:\Program Files\Mozilla Firefox
Locale : en-US
App Version: 23.0
GRE Version: 23.0
OS Name : Windows 7
Target CPU : x86
-------------------------------------------------------------------------------
Removing Previous Installation
-------------------------------------------------------------------------------
Deleted File: C:\Program Files\Mozilla Firefox\AccessibleMarshal.dll
Deleted File: C:\Program Files\Mozilla Firefox\application.ini
Deleted File: C:\Program Files\Mozilla Firefox\breakpadinjector.dll
Deleted File: C:\Program Files\Mozilla Firefox\crashreporter.exe
Deleted File: C:\Program Files\Mozilla Firefox\crashreporter.ini
Deleted File: C:\Program Files\Mozilla Firefox\D3DCompiler_43.dll
Deleted File: C:\Program Files\Mozilla Firefox\dependentlibs.list
Delayed Delete File (Reboot Required): C:\Program Files\Mozilla Firefox\firefox.exe.moz-delete
Deleted File: C:\Program Files\Mozilla Firefox\freebl3.chk
Delayed Delete File (Reboot Required): C:\Program Files\Mozilla Firefox\freebl3.dll.moz-delete
Delayed Delete File (Reboot Required): C:\Program Files\Mozilla Firefox\gkmedias.dll.moz-delete
Deleted File: C:\Program Files\Mozilla Firefox\libEGL.dll
Deleted File: C:\Program Files\Mozilla Firefox\libGLESv2.dll
Deleted File: C:\Program Files\Mozilla Firefox\maintenanceservice.exe
Deleted File: C:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe
Delayed Delete File (Reboot Required): C:\Program Files\Mozilla Firefox\mozalloc.dll.moz-delete
Delayed Delete File (Reboot Required): C:\Program Files\Mozilla Firefox\mozglue.dll.moz-delete
Delayed Delete File (Reboot Required): C:\Program Files\Mozilla Firefox\mozjs.dll.moz-delete
Delayed Delete File (Reboot Required): C:\Program Files\Mozilla Firefox\msvcp100.dll.moz-delete
Delayed Delete File (Reboot Required): C:\Program Files\Mozilla Firefox\msvcr100.dll.moz-delete
Delayed Delete File (Reboot Required): C:\Program Files\Mozilla Firefox\nss3.dll.moz-delete
Delayed Delete File (Reboot Required): C:\Program Files\Mozilla Firefox\nssckbi.dll.moz-delete
Deleted File: C:\Program Files\Mozilla Firefox\nssdbm3.chk
Delayed Delete File (Reboot Required): C:\Program Files\Mozilla Firefox\nssdbm3.dll.moz-delete
Delayed Delete File (Reboot Required): C:\Program Files\Mozilla Firefox\omni.ja.moz-delete
Deleted File: C:\Program Files\Mozilla Firefox\platform.ini
Delayed Delete File (Reboot Required): C:\Program Files\Mozilla Firefox\plugin-container.exe.moz-delete
Deleted File: C:\Program Files\Mozilla Firefox\plugin-hang-ui.exe
Deleted File: C:\Program Files\Mozilla Firefox\precomplete
Deleted File: C:\Program Files\Mozilla Firefox\removed-files
Deleted File: C:\Program Files\Mozilla Firefox\softokn3.chk
Delayed Delete File (Reboot Required): C:\Program Files\Mozilla Firefox\softokn3.dll.moz-delete
Deleted File: C:\Program Files\Mozilla Firefox\update-settings.ini
Deleted File: C:\Program Files\Mozilla Firefox\updater.exe
Deleted File: C:\Program Files\Mozilla Firefox\updater.ini
Deleted File: C:\Program Files\Mozilla Firefox\webapp-uninstaller.exe
Deleted File: C:\Program Files\Mozilla Firefox\webapprt-stub.exe
Delayed Delete File (Reboot Required): C:\Program Files\Mozilla Firefox\xul.dll.moz-delete
Deleted File: C:\Program Files\Mozilla Firefox\webapprt\omni.ja
Deleted File: C:\Program Files\Mozilla Firefox\webapprt\webapprt.ini
Deleted File: C:\Program Files\Mozilla Firefox\uninstall\helper.exe
Deleted File: C:\Program Files\Mozilla Firefox\dictionaries\en-US.aff
Deleted File: C:\Program Files\Mozilla Firefox\dictionaries\en-US.dic
Deleted File: C:\Program Files\Mozilla Firefox\defaults\pref\channel-prefs.js
Deleted File: C:\Program Files\Mozilla Firefox\browser\blocklist.xml
Deleted File: C:\Program Files\Mozilla Firefox\browser\chrome.manifest
Deleted File: C:\Program Files\Mozilla Firefox\browser\crashreporter-override.ini
Delayed Delete File (Reboot Required): C:\Program Files\Mozilla Firefox\browser\omni.ja.moz-delete
Deleted File: C:\Program Files\Mozilla Firefox\browser\searchplugins\amazondotcom.xml
Deleted File: C:\Program Files\Mozilla Firefox\browser\searchplugins\bing.xml
Deleted File: C:\Program Files\Mozilla Firefox\browser\searchplugins\eBay.xml
Deleted File: C:\Program Files\Mozilla Firefox\browser\searchplugins\google.xml
Deleted File: C:\Program Files\Mozilla Firefox\browser\searchplugins\twitter.xml
Deleted File: C:\Program Files\Mozilla Firefox\browser\searchplugins\wikipedia.xml
Deleted File: C:\Program Files\Mozilla Firefox\browser\searchplugins\yahoo.xml
Deleted File: C:\Program Files\Mozilla Firefox\browser\extensions\{972ce4c6-7e08-4474-a285-3208198ce6fd}\icon.png
Deleted File: C:\Program Files\Mozilla Firefox\browser\extensions\{972ce4c6-7e08-4474-a285-3208198ce6fd}\install.rdf
Delayed Delete File (Reboot Required): C:\Program Files\Mozilla Firefox\browser\components\browsercomps.dll.moz-delete
Deleted File: C:\Program Files\Mozilla Firefox\browser\components\components.manifest
Deleted Directory: C:\Program Files\Mozilla Firefox\webapprt
Deleted Directory: C:\Program Files\Mozilla Firefox\dictionaries
Deleted Directory: C:\Program Files\Mozilla Firefox\defaults\pref
Deleted Directory: C:\Program Files\Mozilla Firefox\defaults
Deleted Directory: C:\Program Files\Mozilla Firefox\browser\searchplugins
Deleted Directory: C:\Program Files\Mozilla Firefox\browser\extensions\{972ce4c6-7e08-4474-a285-3208198ce6fd}
Deleted Directory: C:\Program Files\Mozilla Firefox\browser\extensions
-------------------------------------------------------------------------------
Installing Main Files
-------------------------------------------------------------------------------
Installed File: C:\Program Files\Mozilla Firefox\AccessibleMarshal.dll
Installed File: C:\Program Files\Mozilla Firefox\application.ini
Installed File: C:\Program Files\Mozilla Firefox\breakpadinjector.dll
Installed File: C:\Program Files\Mozilla Firefox\crashreporter.exe
Installed File: C:\Program Files\Mozilla Firefox\crashreporter.ini
Installed File: C:\Program Files\Mozilla Firefox\D3DCompiler_43.dll
Created Directory: C:\Program Files\Mozilla Firefox\defaults
Installed File: C:\Program Files\Mozilla Firefox\dependentlibs.list
Created Directory: C:\Program Files\Mozilla Firefox\dictionaries
Installed File: C:\Program Files\Mozilla Firefox\firefox.exe
Installed File: C:\Program Files\Mozilla Firefox\freebl3.chk
Installed File: C:\Program Files\Mozilla Firefox\freebl3.dll
Installed File: C:\Program Files\Mozilla Firefox\gkmedias.dll
Installed File: C:\Program Files\Mozilla Firefox\libEGL.dll
Installed File: C:\Program Files\Mozilla Firefox\libGLESv2.dll
Installed File: C:\Program Files\Mozilla Firefox\maintenanceservice.exe
Installed File: C:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe
Installed File: C:\Program Files\Mozilla Firefox\mozalloc.dll
Installed File: C:\Program Files\Mozilla Firefox\mozglue.dll
Installed File: C:\Program Files\Mozilla Firefox\mozjs.dll
Installed File: C:\Program Files\Mozilla Firefox\msvcp100.dll
Installed File: C:\Program Files\Mozilla Firefox\msvcr100.dll
Installed File: C:\Program Files\Mozilla Firefox\nss3.dll
Installed File: C:\Program Files\Mozilla Firefox\nssckbi.dll
Installed File: C:\Program Files\Mozilla Firefox\nssdbm3.chk
Installed File: C:\Program Files\Mozilla Firefox\nssdbm3.dll
Installed File: C:\Program Files\Mozilla Firefox\omni.ja
Installed File: C:\Program Files\Mozilla Firefox\platform.ini
Installed File: C:\Program Files\Mozilla Firefox\plugin-container.exe
Installed File: C:\Program Files\Mozilla Firefox\plugin-hang-ui.exe
Installed File: C:\Program Files\Mozilla Firefox\precomplete
Installed File: C:\Program Files\Mozilla Firefox\removed-files
Installed File: C:\Program Files\Mozilla Firefox\softokn3.chk
Installed File: C:\Program Files\Mozilla Firefox\softokn3.dll
Installed File: C:\Program Files\Mozilla Firefox\update-settings.ini
Installed File: C:\Program Files\Mozilla Firefox\updater.exe
Installed File: C:\Program Files\Mozilla Firefox\updater.ini
Installed File: C:\Program Files\Mozilla Firefox\webapp-uninstaller.exe
Created Directory: C:\Program Files\Mozilla Firefox\webapprt
Installed File: C:\Program Files\Mozilla Firefox\webapprt-stub.exe
Installed File: C:\Program Files\Mozilla Firefox\xul.dll
Installed File: C:\Program Files\Mozilla Firefox\webapprt\omni.ja
Installed File: C:\Program Files\Mozilla Firefox\webapprt\webapprt.ini
Installed File: C:\Program Files\Mozilla Firefox\uninstall\helper.exe
Installed File: C:\Program Files\Mozilla Firefox\dictionaries\en-US.aff
Installed File: C:\Program Files\Mozilla Firefox\dictionaries\en-US.dic
Created Directory: C:\Program Files\Mozilla Firefox\defaults\pref
Installed File: C:\Program Files\Mozilla Firefox\defaults\pref\channel-prefs.js
Installed File: C:\Program Files\Mozilla Firefox\browser\blocklist.xml
Installed File: C:\Program Files\Mozilla Firefox\browser\chrome.manifest
Installed File: C:\Program Files\Mozilla Firefox\browser\crashreporter-override.ini
Created Directory: C:\Program Files\Mozilla Firefox\browser\extensions
Installed File: C:\Program Files\Mozilla Firefox\browser\omni.ja
Created Directory: C:\Program Files\Mozilla Firefox\browser\searchplugins
Installed File: C:\Program Files\Mozilla Firefox\browser\searchplugins\amazondotcom.xml
Installed File: C:\Program Files\Mozilla Firefox\browser\searchplugins\bing.xml
Installed File: C:\Program Files\Mozilla Firefox\browser\searchplugins\eBay.xml
Installed File: C:\Program Files\Mozilla Firefox\browser\searchplugins\google.xml
Installed File: C:\Program Files\Mozilla Firefox\browser\searchplugins\twitter.xml
Installed File: C:\Program Files\Mozilla Firefox\browser\searchplugins\wikipedia.xml
Installed File: C:\Program Files\Mozilla Firefox\browser\searchplugins\yahoo.xml
Created Directory: C:\Program Files\Mozilla Firefox\browser\extensions\{972ce4c6-7e08-4474-a285-3208198ce6fd}
Installed File: C:\Program Files\Mozilla Firefox\browser\extensions\{972ce4c6-7e08-4474-a285-3208198ce6fd}\icon.png
Installed File: C:\Program Files\Mozilla Firefox\browser\extensions\{972ce4c6-7e08-4474-a285-3208198ce6fd}\install.rdf
Installed File: C:\Program Files\Mozilla Firefox\browser\components\browsercomps.dll
Installed File: C:\Program Files\Mozilla Firefox\browser\components\components.manifest
-------------------------------------------------------------------------------
DLL Registration
-------------------------------------------------------------------------------
Registered: C:\Program Files\Mozilla Firefox\AccessibleMarshal.dll
-------------------------------------------------------------------------------
Adding Registry Entries
-------------------------------------------------------------------------------
Added Registry String: HKLM | Software\Mozilla\Mozilla Firefox\23.0 (en-US)\Main | Install Directory | C:\Program Files\Mozilla Firefox
Added Registry String: HKLM | Software\Mozilla\Mozilla Firefox\23.0 (en-US)\Main | PathToExe | C:\Program Files\Mozilla Firefox\firefox.exe
Added Registry String: HKLM | Software\Mozilla\Mozilla Firefox\23.0 (en-US)\Uninstall | Description | Mozilla Firefox 23.0 (x86 en-US)
Added Registry String: HKLM | Software\Mozilla\Mozilla Firefox\23.0 (en-US) | | 23.0 (en-US)
Added Registry String: HKLM | Software\Mozilla\Mozilla Firefox 23.0\bin | PathToExe | C:\Program Files\Mozilla Firefox\firefox.exe
Added Registry String: HKLM | Software\Mozilla\Mozilla Firefox 23.0\extensions | Components | C:\Program Files\Mozilla Firefox\components
Added Registry String: HKLM | Software\Mozilla\Mozilla Firefox 23.0\extensions | Plugins | C:\Program Files\Mozilla Firefox\plugins
Added Registry String: HKLM | Software\Mozilla\Mozilla Firefox 23.0 | GeckoVer | 23.0
Added Registry String: HKLM | Software\Mozilla\Mozilla Firefox | | 23.0
Added Registry String: HKLM | Software\Mozilla\Mozilla Firefox | CurrentVersion | 23.0 (en-US)
Added Registry String: HKLM | Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 23.0 (x86 en-US) | Comments | Mozilla Firefox 23.0 (x86 en-US)
Added Registry String: HKLM | Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 23.0 (x86 en-US) | DisplayIcon | C:\Program Files\Mozilla Firefox\firefox.exe,0
Added Registry String: HKLM | Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 23.0 (x86 en-US) | DisplayName | Mozilla Firefox 23.0 (x86 en-US)
Added Registry String: HKLM | Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 23.0 (x86 en-US) | DisplayVersion | 23.0
Added Registry String: HKLM | Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 23.0 (x86 en-US) | InstallLocation | C:\Program Files\Mozilla Firefox
Added Registry String: HKLM | Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 23.0 (x86 en-US) | Publisher | Mozilla
Added Registry String: HKLM | Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 23.0 (x86 en-US) | UninstallString | "C:\Program Files\Mozilla Firefox\uninstall\helper.exe"
Added Registry String: HKLM | Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 23.0 (x86 en-US) | URLInfoAbout | http://www.mozilla.com/en-US/
Added Registry String: HKLM | Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 23.0 (x86 en-US) | URLUpdateInfo | http://www.mozilla.com/en-US/firefox/
Added Registry DWord: HKLM | Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 23.0 (x86 en-US) | NoModify | 1
Added Registry DWord: HKLM | Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 23.0 (x86 en-US) | NoRepair | 1
Added Registry DWord: HKLM | Software\Microsoft\Windows\CurrentVersion\Uninstall\Mozilla Firefox 23.0 (x86 en-US) | EstimatedSize | 91622
Added Registry String: HKLM | Software\Microsoft\Windows\CurrentVersion\App Paths\firefox.exe | | C:\Program Files\Mozilla Firefox\firefox.exe
Added Registry String: HKLM | Software\Microsoft\Windows\CurrentVersion\App Paths\firefox.exe | Path | C:\Program Files\Mozilla Firefox
Added Registry Key: HKLM | Software\Microsoft\MediaPlayer\ShimInclusionList\FIREFOX.EXE
Added Registry Key: HKLM | Software\Microsoft\MediaPlayer\ShimInclusionList\plugin-container.exe
-------------------------------------------------------------------------------
Setting Permitted LSP Categories
-------------------------------------------------------------------------------
Permitted LSP Categories: 0x00000000
-------------------------------------------------------------------------------
Adding Shortcuts
-------------------------------------------------------------------------------
Added Shortcut: C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Mozilla Firefox.lnk
Added Shortcut: C:\Users\Public\Desktop\Mozilla Firefox.lnk
-------------------------------------------------------------------------------
Reboot Required To Finish Installation
-------------------------------------------------------------------------------
===

iamjayakumars 489 solutions 5951 answers

Sometimes a problem with Firefox may be a result of malware installed on your computer, that you may not be aware of.

You can try these free programs to scan for malware, which work with your existing antivirus software:

Microsoft Security Essentials is a good permanent antivirus for Windows 7/Vista/XP if you don't already have one.


Further information can be found in the Troubleshoot Firefox issues caused by malware article.

Did this fix your problems? Please report back to us!

Sometimes a problem with Firefox may be a result of malware installed on your computer, that you may not be aware of. You can try these free programs to scan for malware, which work with your existing antivirus software: * [http://www.microsoft.com/security/scanner/default.aspx Microsoft Safety Scanner] * [http://www.malwarebytes.org/products/malwarebytes_free/ MalwareBytes' Anti-Malware] * [http://support.kaspersky.com/faq/?qid=208283363 TDSSKiller - AntiRootkit Utility] * [http://www.surfright.nl/en/hitmanpro/ Hitman Pro] * [http://www.eset.com/us/online-scanner/ ESET Online Scanner] [http://windows.microsoft.com/MSE Microsoft Security Essentials] is a good permanent antivirus for Windows 7/Vista/XP if you don't already have one. Further information can be found in the [[Troubleshoot Firefox issues caused by malware]] article. Did this fix your problems? Please report back to us!

Question owner

I also suspected virus or malware. However, quick scan of virus and malware do not find anything.

I have searched through window event log and still no idea what was wrong. Something behind the scene is like a Firefox 23 installer, which can replace everything including files and registry back to Firefox 23. It should not be a simple malware that is capable of.

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I also suspected virus or malware. However, quick scan of virus and malware do not find anything. I have searched through window event log and still no idea what was wrong. Something behind the scene is like a Firefox 23 installer, which can replace everything including files and registry back to Firefox 23. It should not be a simple malware that is capable of. :(

Question owner

Today I started up my PC at around 9:15am. And found it changed to FF23 at around 10am. Below is the log

I have also run a full scan of virus by McAfee but nothing found I installed Microsoft Security Essential as suggested and run a full scan. Also it had nothing found....

Mozilla Firefox Installation Started: 2013-10-18 9:54:11



Installation Details


 Install Dir: C:\Program Files\Mozilla Firefox
 Locale     : en-US
 App Version: 23.0
 GRE Version: 23.0
 OS Name    : Windows 7
 Target CPU : x86
Today I started up my PC at around 9:15am. And found it changed to FF23 at around 10am. Below is the log I have also run a full scan of virus by McAfee but nothing found I installed Microsoft Security Essential as suggested and run a full scan. Also it had nothing found.... Mozilla Firefox Installation Started: 2013-10-18 9:54:11 ------------------------------------------------------------------------------- ------------------------------------------------------------------------------- Installation Details ------------------------------------------------------------------------------- Install Dir: C:\Program Files\Mozilla Firefox Locale : en-US App Version: 23.0 GRE Version: 23.0 OS Name : Windows 7 Target CPU : x86

Chosen Solution

Finally it looks I found the problem. It is related to our stupid IT doing something strange.

Thanks for your help

Finally it looks I found the problem. It is related to our stupid IT doing something strange. Thanks for your help