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user preferences will not save on windows xp. clean install will not work.


User options will not save. I have followed all the instructions to do a clean install which included removing the old firefox files and user profiles. I am using Windows xp SP3. The only thing I have not edited is the registry information for firefox. I can not get the options to save correctly. Please help.

Additional System Details

Installed Plug-ins

  • Shockwave Flash 11.5 r502
  • RealPlayer(tm) LiveConnect-Enabled Plug-In
  • RealPlayer Download Plugin
  • Google Update
  • Adobe PDF Plug-In For Firefox and Netscape 10.1.5
  • RealNetworks(tm) RealDownloader Chrome Background Extension Plug-In
  • RealNetworks(tm) RealDownloader PepperFlashVideoShim Plug-In
  • RealNetworks(tm) RealDownloader HTML5VideoShim Plug-In
  • RealDownloader Plugin
  • Adobe Shockwave for Director Netscape plug-in, version
  • Windows Presentation Foundation (WPF) plug-in for Mozilla browsers
  • DRM Netscape Network Object
  • Npdsplay dll
  • DRM Store Netscape Plugin


  • User Agent: Mozilla/5.0 (Windows NT 5.1; rv:18.0) Gecko/20100101 Firefox/18.0

More Information

  • Top 10 Contributor
  • Moderator
2043 solutions 8891 answers

hello, is this only affecting some certain preferences or do none of them get saved after a restart?

Question owner

none of them get saved after a restart.

  • Top 10 Contributor
  • Moderator
10751 solutions 96759 answers

Which security software (firewall, anti-virus) do you have?

Some security software has virtualization or sandbox features that may cause problems by protecting and restoring files in the Firefox profile folder.

Is there a prefs.js file created with the correct date/time stamp?

Try to rename or delete the prefs.js file and possible numbered prefs-##.js files and a possible user.js file to reset all prefs to the default values.

Question owner

Norton security. Can't see any settings that are preventing Firefox. I do have a new prefs file. created with clean install. have tried deleating it an even renaming it as well. tried the links already.