Type about:addons<enter> in the address bar to open your Add-ons Manager. Hot key; (<Control> [Mac=<Command>] <Shift> A)

In the Add-ons Manager, on the left, select Extensions. Remove “ Yahoo “ Anything.

Also remove SafeSearch, SearchAssist Incognito, FileConverter Addon, SearchLock, DiscreteSearch, WebSearch, Findwide Search Engine, securedsearch

Now do the same in the computer’s Programs Folder.

Windows: Start > Control Panel > Uninstall Programs. Mac: Open the Applications folder. Linux: Check your user manual.

I don't mean to be computer dumb, but I am. Where is add-ons manager on my Imac?

Type about:addons<enter> in the address bar to open your Add-ons Manager.

See also:

• https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems