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What do I do when I see "about sessionrestore" in the URL field ?


Even when I uninstall Firefox and reinstall a newer version, the problem still occurs. When I click on Firefox icon, its page seems to open but the "about sessionrestore" reappears. If I click on the same field to write another URL, then Firefox stops responding

Additional System Details

This happened

Every time Firefox opened

This started when...

probably when I installed some antivirus program (Avast) or Google Chrome or SpyBot

Installed Plug-ins

  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • Default Plug-in
  • Adobe PDF Plug-In For Firefox and Netscape "9.4.0"
  • Provides additional functionality on Facebook. See our web site for details.
  • Shockwave Flash 10.1 r85
  • Adobe Shockwave for Director Netscape plug-in, version 11.5
  • iTunes Detector Plug-in
  • 3.0.40818.0
  • Google Update
  • Java Plug-in 1.6.0_05 for Netscape Navigator (DLL Helper)
  • Npdsplay dll
  • DRM Store Netscape Plugin
  • DRM Netscape Network Object


  • User Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; fr; rv: Gecko/20100914 Firefox/3.6.10

More Information

  • Moderator
1041 solutions 8840 answers

Helpful Reply

You get the about:sessionstore page if Firefox repeatedly crashes or closes abnormally.

Some troubleshooting options. Try to start Firefox in Firefox safe mode, this will start Firefox with add-ons disabled and can be used to see if an add-on is causing the problem. If it works in safe mode try the procedure in the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article.

Uninstalling and re-installing Firefox does not by default remove the profile folder (location where user data is stored), another troubleshooting option is to create a new profile. Creating a new profile will show if the problem is with the old profile. For how to do that see creating a new Firefox profile on Windows.

If the new profile works, you can copy selected data such as bookmarks and passwords to the new profile. For details see transferring data to a new profile. Do not copy the preferences file, and it is best to re-install any add-ons.