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 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.

90.0.1 Firefox Release

July 19, 2021

Version 90.0.1, first offered to Release channel users on July 19, 2021

Fixed

  • Fixed a crash when using some accessibility clients on Windows (bug 1720696)

  • Fixed busy looping processing some HTTP3 responses (bug 1720079)

  • Fixed transient errors authenticating with some smart cards (bug 1715325)

  • Fixed a rare crash on shutdown (bug 1707057)

  • Fixed a race on startup that caused about:support to end up empty after upgrade (bug 1717894)

Unresolved

  • Printing a page with scaling may result in truncated output (bug 1720621)

Get the most recent version

All Firefox downloads