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.

78.10.1 Firefox ESR

May 4, 2021

Version 78.10.1, first offered to ESR channel users on May 4, 2021

Fixed

  • Resolved an issue caused by a recent Widevine plugin update which prevented some purchased video content from playing correctly (bug 1705138)

  • Security fix

Developer

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