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.

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

Version 78 for mac 10.11.6

  • 4 replies
  • 0 have this problem
  • Last reply by anikkid

more options

How can I get the download for version 78 for Firefox? My Mac is on 10.11.6 and my Firefox won’t open bc the newer version isn’t supported. I need the old version and can’t seem to find a way to download it. Please help!

How can I get the download for version 78 for Firefox? My Mac is on 10.11.6 and my Firefox won’t open bc the newer version isn’t supported. I need the old version and can’t seem to find a way to download it. Please help!

Chosen solution

All Replies (4)

more options

Chosen Solution

Helpful?

more options

You are THE MAN!!!! Thank you so much!!

Helpful?

more options

If you can update your macOS to at least 10.12 (ten.twelve) then you would be able to run Firefox 115 ESR which is currently at Fx 115.17.0esr and is being updated till at least Fx 115.21.0esr in March 2025 unless Mozilla extends updates again.

Helpful?

more options

James, it is an old Mac so I can’t update the OS past 10.11.6 but thank you.

Helpful?

Ask a question

You must log in to your account to reply to posts. Please start a new question, if you do not have an account yet.