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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.

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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.

Your system may not meet the requirements for Firefox, but you can try one of these versions:

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.

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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.

Get the most recent version

Your system may not meet the requirements for Firefox, but you can try one of these versions:

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
All Firefox ESR downloads