''dupe of https://support.mozilla.org/en-US/questions/1187562 - locking'' Hello, I recently upraded to Firefox 57, since then None of the add-ons for Firefox 57 that I have installed are active and working. There is no setting section or any way to turn them on and use them? Btw, I'm not referring to legacy extensions. I have found new add-ons, and installed them, but none of them work or have the settings button to configure them. For example I have Adblock plus and Ublock installed, they are both enabled but I see tons of ads on every site I visit. I have enclosed a screen shot of the google translate extension, you'll see it's enabled but there is no way to configure it through setting and it does not work at all. Anyone have any ideas? Please help, -Rocky