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.

Firefox ESR

March 7, 2017

Version 52.0esr, first offered to ESR channel users on March 7, 2017


  • Service workers and push notifications disabled

  • WebAssembly disabled

  • Non-flash plugins re-enabled (disabled in the regular 52.0 release)

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