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

May 3, 2016

Version 46.0.1, first offered to Release channel users on May 3, 2016

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


  • Page loading issue related to antivirus software (Bug 1268922)

  • Build issue when jit is disabled (Bug 1266366)

  • Service worker update issue (Bug 1267733)

  • Limit Sync registration updates (Bug 1262312)

  • Add-on signing certificate expiration (Bug 1267318)

  • Search plugin issue for various locales (Bug 1246494)

All Firefox downloads