Download Firefox

Firefox is no longer supported on Windows 8.1 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox.

Firefox is no longer supported on macOS 10.14 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox.

Firefox Privacy Notice

Firefox ESR
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.

45.1.1 Firefox ESR

May 3, 2016

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

Fixed

  • 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)

Get the most recent version

All Firefox ESR downloads