Firefox Release

December 15, 2015

Version 43.0, first offered to Release channel users on December 15, 2015

We'd also like to extend a special thank you to all of the new Mozillians who contributed to this release of Firefox!


  • Private Browsing with Tracking Protection offers choice of blocking additional trackers

  • Improved API support for m4v video playback

  • Firefox 64-bit for Windows is now available via the Firefox download page

  • Users can choose search suggestions from the Awesome Bar

  • On-screen keyboard displayed on selecting input field on devices running Windows 8 or greater

  • Firefox Health Report has switched to use the same data collection mechanism as telemetry


  • Eyedropper tool does not work as expected when page is zoomed

  • Various security fixes


All Firefox downloads