Your favorite Firefox add-on just stopped working in the browser or refuses to install? If that happens to you it could be because of a new policy over at Mozilla that requires add-ons to be signed before they can be installed or activated in the Firefox web browser.
The policy is not live yet -- Mozilla postponed the enforcement part to Firefox 44 which will come out on January 26, 2016 according to the official Firefox release schedule.
Right now, you may receive warnings that unsigned add-ons are run and when Firefox 43 is released, may experience the blocking for the first time.
Mozilla plans to ship Firefox 43 with an override but will remove it again when the browser hits version 44.
Once Firefox 44 has been released, Firefox will only accept signed add-ons on the stable and beta channel.
Firefox displays the following error messages in regards to unsigned add-ons.
When you try to install an add-on that is not signed and add-on signing is enforced:
Firefox has prevented this site from installing an unverified add-on.
When you install an unsigned add-on when add-on signing is not enforced:
Caution: This site would like to install an unverified add-on in Firefox. Proceed at your own risk.
When you have an unsigned add-on installed in Firefox and check the add-on manager:
"Add-on name" could not be verified for use in Firefox. Proceed with caution.
When add-on signing is enforced and there is an unsigned add-on installed in Firefox:
"Add-on name" will be disabled after you restart Firefox.
When you start Firefox with add-on signing enforced and an unsigned add-on installed:
"Add-on name" could not be verified for use in Firefox and has been disabled.
There are options however that may work for you. Lets take a closer look at all of them:
We have talked about this before but since it is important to have all information at hand from a single resource, I'd like to guide you through enabling the override again here on this page.
Doing so allows you to install unsigned extensions in the Firefox web browser. Please note that the override will be removed in Firefox 44 Stable and Beta.
Now You: Do you run unsigned add-ons? If so, what do you plan to do about it?
Advertising revenue is falling fast across the Internet, and independently-run sites like Ghacks are hit hardest by it. The advertising model in its current form is coming to an end, and we have to find other ways to continue operating this site.
We are committed to keeping our content free and independent, which means no paywalls, no sponsored posts, no annoying ad formats or subscription fees.
If you like our content, and would like to help, please consider making a contribution:
Ghacks is a technology news blog that was founded in 2005 by Martin Brinkmann. It has since then become one of the most popular tech news sites on the Internet with five authors and regular contributions from freelance writers.