This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

Firefox browser available for Mac OS X 10.9.5 ?

westernart778
westernart778
more options

Hello folks,

I'm looking to upgrade my FF browser as much as possible, but I need to run Mac OS X 10.9.5 (for legacy software) on my older iMac.

Currently running "78.15.0esr (64-bit)" and the "About" window says "Firefox is up to date" and "You are currently running on the esr update channel" (Not sure what that means)

Any help would be greatly appreciated! Thank you.

TJ

Hello folks, I'm looking to upgrade my FF browser as much as possible, but I need to run Mac OS X 10.9.5 (for legacy software) on my older iMac. Currently running "78.15.0esr (64-bit)" and the "About" window says "Firefox is up to date" and "You are currently running on the esr update channel" (Not sure what that means) Any help would be greatly appreciated! Thank you. TJ

All Replies (2)

James
James
  • Moderator
  • Top 10 Contributor
more options

Firefox since Fx 79.0 and later including the current Fx 95 and 91 ESR requires Mac OS X '10.12' (ten.twelve) at minimum. ESR stands for Extended Support Release and was meant more for Enterprise users in mind as they like stability.

Besides updating your OS to Mac OS X 10.12 or later, the most current Firefox version you can install on mac OS 10.9.5 is Fx '78.15.0' ESR though it is EOL with no more updates.

https://support.mozilla.org/en-US/kb/firefox-mac-osx-users-esr

https://www.mozilla.org/firefox/78.0/system-requirements/ https://www.mozilla.org/firefox/79.0/system-requirements/ https://www.mozilla.org/firefox/95.0/system-requirements/

In case you ever need the Firefox 78.15.0esr file. https://archive.mozilla.org/pub/firefox/releases/78.15.0esr/mac/en-US/ other locales at https://archive.mozilla.org/pub/firefox/releases/78.15.0esr/mac/

westernart778
westernart778 Question owner
more options

Thanks so much, James!!