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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.

31.3.0

Firefox Extended Support Release ESR

December 1, 2014

Version 31.3.0, first offered to ESR channel users on December 1, 2014

Fixed

  • Security fixes can be found here

  • Wrong CPU features detection on some x86 CPUs (see bug 1096651 )

  • Build error on Yosemite (see bug 1045231 )

  • Error building nsChildView.mm on OS X 10.10 (see bug 1005458 )

  • Intermittent failures in add-ons manager mochitest-browser tests (see bug 1095128 )

  • @ JS::Handle::operator JSObject* const&() startup crash (see bug 1055766 )

  • Bad CPU type in executable running mochitests on yosemite (see bug 1054043 )

  • XMLHttpRequest.send({}) should not throw (see bug 1096263 )