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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.

78.3.1 Firefox ESR

October 1, 2020

Version 78.3.1, first offered to ESR channel users on October 1, 2020

Fixed

  • Fixed legacy preferences not being properly applied when set via GPO (bug 1666836)

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