The easiest way to delete it and reset all of the preferences it's changed is to use the reset feature.

If you want to go about it manually, see Remove a toolbar that has taken over your Firefox search or home page.

Thanks for your reply.

I tried the reset feature, then I tried a complete uninstall. Neither were effective. It's just something to do with the 1 plugin, very annoying problem.

See:

• http://kb.mozillazine.org/Uninstalling_add-ons
• http://kb.mozillazine.org/Uninstalling_toolbars

See also:

• https://developer.mozilla.org/en/Installing_extensions
• https://developer.mozilla.org/en/Adding_Extensions_using_the_Windows_Registry

It's a built-in extension, not a 3rd party add-on. It also isn't a toolbar. These suggestions don't help my problem at all.

I had the same problem and (after 2 days of searching to identify the source) simply disabled the extension.

Tools\Add-ons\Extensions, find it and disable it.

Working so far for me!

Unfortunately that is the best solution I've come up with too.

Hi, I had the same problem and solved it. Here's more information:

http://www.reddit.com/r/techsupport/comments/z4a3y/the_firefox_extension_mozilla_safe_browsing_2014/

Thanks! Excellent post. Problem is gone now (reinstalled windows due to other problems) but this will help if it ever comes back!

Just go here C:\Documents and Settings\Owner\Local Settings\Application Data and look for a stringed folder and delete it. Make sure Firefox is closed to do this. Also check the extensions.rdf folder in your profile folder. Remove the entry for safe browsing plugin. Voila !Gone!

The ""Mozilla Safe Browsing" add-on is malware _{Ref: Blocked Add-ons and bug 799266}

For more information about malware, see

• Troubleshoot Firefox issues caused by malware

For anyone who is unable to remove the "Mozilla Safe Browsing" add-on from the Add-ons Extensions list using the solution linked above, simply keep it disabled in the Add-ons Manager, for now.

(Locking)