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 Nightly
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.

64.0a1 Firefox Nightly

September 4, 2018

Version 64.0a1, first offered to Nightly channel users on September 4, 2018

Firefox Nightly gets updated every day and as a consequence, the release notes for the Nightly channel are updated continuously to reflect features that have reached sufficient maturity to benefit from community feedback and bug reports. Features listed here may or may not make a final release of Firefox.

In addition to these release notes, you can follow ongoing development on our @FirefoxNightly Twitter account as well as read our Nightly Blog.


  • You can now use the context menu on toolbar buttons added by add-ons to remove the add-on

    Bug 1401610
  • WebRender enabled by default for Desktop NVIDIA GPUs on Windows 10

    Bug 1490742
  • Websites notifications you subscribed to are now displayed and managed in the Windows Action Center

    Bug 1155505


  • Changes to URL bar autocomplete shortcuts: use ctrl-enter to canonicalize a word to a .com URL. On MacOS, cmd-enter now opens in a tab.

    Bug 237027
  • about:crashes has been redesigned to make it clear when a crash is being submitted to Mozilla, as well as being clear that removing crashes locally does not remove them from

    Bug 1476062

Get the most recent version

All Firefox Nightly downloads