Firefox support has ended for Mac OS X 10.6, 10.7 and 10.8

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  • Revision id: 138356
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  • Creator: AliceWyman
  • Comment: OS X is now macOS; edits to ESR section
  • Reviewed: No
  • Ready for localization: No
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This article applies to Mac users only.

Starting with Firefox version 49, Firefox requires Mac OS X 10.9 (Mavericks) or higher. If you are on an earlier version of Mac OS X, there are options for you to continue using a secure version of Firefox.

Visit this Apple Support page to find your Mac OS version.

Option 1: Upgrade to a Mac OS version supported by Apple

To continue browsing safely, we recommend upgrading to a Mac OS version that Apple supports. Visit this Apple Support Page to learn more about upgrading.

While Firefox will still continue to work on unsupported versions, using Firefox on a supported version will provide you with the best and safest user experience.

Option 2: Download Firefox Extended Support Release (ESR) - until January 2017

Firefox Extended Support Release (ESR) version 45 is the last ESR version that will be supported on Mac OS X versions 10.6, 10.7 and 10.8. Firefox ESR version 45 will be available for download until January 2017 and will continue to receive updates until April 2017. To download Firefox ESR, see the Firefox ESR page.

Note: Some Firefox features might not be available on ESR.