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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 Extended Support Release ESR

May 3, 2016

Version 45.1.1, first offered to ESR channel users on May 3, 2016


  • Reference link to Firefox 45.1.1 release notes

  • Build issue when jit is disabled (Bug 1266366)

  • Graphics-related shutdown crash (Bug 1261321)

  • Add-on signing certificate expiration (Bug 1267318)