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.

78.10.0 Firefox ESR

April 19, 2021

Version 78.10.0, first offered to ESR channel users on April 19, 2021

Fixed

Unresolved

  • Some purchased video content may not play correctly due to a recent Widevine plugin update (bug 1705138). This is fixed in Firefox ESR 78.10.1 and later releases.

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