This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

My extensions stopped working about 2 weeks ago. I've tried 4.0, 3.6, 3.5, and 3.4, and they still don't work. They were all working fine until 2 weeks ago. I've tried everything I can think of. Please help. Thanks.

  • 1 odgovor
  • 3 ima ovaj problem
  • 14 views
  • Posljednji odgovor poslao cor-el

more options

My extensions stopped working about 2 weeks ago. I've tried 4.0, 3.6, 3.5, and 3.4, and they still don't work. They were all working fine until 2 weeks ago. I've tried everything I can think of. Please help. Thanks.

My main ones are SEO for Firefox and WiseStamp Email Signature.

My extensions stopped working about 2 weeks ago. I've tried 4.0, 3.6, 3.5, and 3.4, and they still don't work. They were all working fine until 2 weeks ago. I've tried everything I can think of. Please help. Thanks. My main ones are SEO for Firefox and WiseStamp Email Signature.

All Replies (1)

more options

Delete the files extensions.* (extensions.rdf, extensions.cache, extensions.ini, extensions.sqlite) and compatibility.ini in the Firefox profile folder to reset the extensions registry. New files will be created when required.

See "Corrupt extension files": http://kb.mozillazine.org/Unable_to_install_themes_or_extensions

If you see disabled, not compatible, extensions in "Tools > Add-ons > Extensions" then click the "Find Updates" button (in Firefox 4: right-click the extension -> "Find Updates") to do a compatibility check.