Firefox Release

March 31, 2015

Version 37.0, first offered to Release channel users on March 31, 2015

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


  • Heartbeat user rating system - your feedback about Firefox

  • Yandex set as default search provider for the Turkish locale

  • Bing search now uses HTTPS for secure searching

  • Improved protection against site impersonation via OneCRL centralized certificate revocation

  • Opportunistically encrypt HTTP traffic where the server supports HTTP/2 AltSvc



  • Disabled insecure TLS version fallback for site security

  • Improved certificate and TLS communication security by removing support for DSA

  • Extended SSL error reporting for reporting non-certificate errors

  • TLS False Start optimization now requires a cipher suite using AEAD construction

  • Improved performance of WebGL rendering on Windows


Web Platform

  • Implemented a subset of the Media Source Extensions (MSE) API to allow native HTML5 playback on YouTube (Windows Vista or later only)

  • Added support for CSS display:contents

  • IndexedDB now accessible from worker threads

  • New SDP/JSEP implementation in WebRTC

All Firefox downloads