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Firefox does not show add-ons and extensions


After downloading a freeware program loaded with malware/spyware i set about restoring the system overnight to find nothing showing in the add-ons, extensions and appearances section. Even clicking on 'get add-ons' section does not take me to the site as it used to, as it just continuously tries to load. I deleted the extension files (e.g. sqlite, ini, rdf) as suggested in previous posts but this did not fix the problem. Would i need to reset Firefox and if so will i lose all my bookmarks and add-ons?

Additional System Details

Installed Plug-ins

  • Shockwave Flash 11.7 r700
  • Next Generation Java Plug-in 1.6.0_45 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • Adobe PDF Plug-In For Firefox and Netscape "9.5.5"
  • Google Update
  • VLC media player Web Plugin 2.0.6
  • iTunes Detector Plug-in
  • 5.1.20125.0
  • Picasa plugin
  • Adobe Shockwave for Director Netscape plug-in, version
  • CANON iMAGE GATEWAY Album Plugin Utility Module


  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:21.0) Gecko/20100101 Firefox/21.0

More Information

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What does the reset feature do?

All of your Firefox settings and personal information are stored in your profile folder. The reset feature works by creating a new profile folder for you while saving your most important data.

Firefox will try to keep the following data:

    Browsing history
    Web form auto-fill information 

Most everything else is saved to a folder on the Desktop, should you want to revert from the reset.

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Did you delete compatibility.ini and addons.sqlite as well?

Question owner

I could not find any compatibility.ini or extension ini. file/s in the folder, however i found the addons.sqlite which i deleted but this did not fix the problem. In fact, i don't see any .ini files at all. I have attached screenshot with list of files

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Helpful Reply

The compatibility.ini file shows as compatibility

Windows hides some file extensions by default.
Among them are .html and .ini and .js and .txt, so you may only see a name without file extension.

You can see the real file type if you open the Properties via the right-click context menu.

Question owner

Deleting both the extension ini and the compatibility ini files fixed the problem

Thank You

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You're welcome