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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.

115.16.0 Firefox ESR

October 1, 2024

Version 115.16.0, first offered to ESR channel users on October 1, 2024

Firefox ESR 115 is now supported only on Windows 7-8.1 and macOS 10.12-10.14. Users on other operating systems should use Firefox ESR 128 instead.

Fixed

  • Fixed Windows 7 incompatibility with the latest Widevine library to retain Encrypted Media Extensions (EME) support, ensuring support for content from video streaming providers.

  • Various security fixes.

Developer

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