Firefox Release Notes

Release Notes tell you what’s new in Firefox. As always, we welcome your feedback. You can also file a bug in Bugzilla or see the system requirements of this release.

Firefox Release

August 18, 2016

Version 48.0.1, first offered to Release channel users on August 18, 2016

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


  • Fix a shutdown issue (Bug 1276920)

  • Fix an unsigned add-ons issue on Windows

  • Fix a top crash caused by plugin issues (Bug 1264530)

  • Fix a different behavior with e10s / non-e10s on <select> and mouse events (Bug 1291078)

  • Fix a top crash in the JavaScript engine (Bug 1290469)

  • Fix an audio regression impacting some major websites (bug 1295296)

  • Fix a crash in WebRTC



  • Startup crash issue caused by Websense (Bug 1291738)

All Firefox downloads