The Mozilla Foundation, the organisation that produces the open-source browser Firefox, has released updates to fix the issue with the browser that prevented users from downloading extensions and also rendered any existing extension unusable.

Firefox users have had all the extensions they use in their browser disabled due to the expiry of an intermediate signing certificate a few days ago. They have also been unable to download and use any new extensions.

Skype can no longer be accessed on the Web using the Firefox browser on both Linux and Windows, as of Wednesday morning. The same applies to Opera.