Firefox Disables browser Extensions due to an Expired Certificate. Mozilla has disabled all extensions in its Firefox web browser, the company writes on its website.

The plug-ins no longer work because a security certificate has expired.

The extensions have completely discontinued working for Firefox users due to the error.

Each plug-in for the browser gives a message that it “could not be verified for use in Firefox”.

Firefox offers apologies on Twitter for not working the extensions.

“We are working hard on a solution to this problem and will keep you informed.”

It is not plausible to install new extensions until Firefox comes up with a solution.

It is not apparent when that will happen.

According to Firefox, tests are currently being conducted.

Extensions enable users to add additional options to their browser.

For example, an add-on can be added to use a password manager or VPN service.