Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

Den här webbplatsen har begränsad funktionalitet medan vi utför underhåll för att förbättra din upplevelse. Om en artikel inte löser ditt problem och du vill ställa en fråga har vi vår gemenskap som väntar på att hjälpa dig på @FirefoxSupport på Twitter, /r/firefox på Reddit.

Avatar for Username

Sök i support

Akta dig för supportbedrägerier: Vi kommer aldrig att be dig att ringa eller skicka ett sms till ett telefonnummer eller dela personlig information. Rapportera misstänkt aktivitet med alternativet "Rapportera missbruk".

Läs mer

Denna tråd har arkiverats. Ställ en ny fråga om du behöver hjälp.

Firefox version that will work with osx 10.11.6 before

mmsampson999
mmsampson999
more options

I updated Firefox and overrode the working version I was using. The new version error message is: Requires osx 10.12 or later. I cannot upgrade my Mac operating systems. It’s and old MacBook Pro I cannot access the internet. Safari does not work on my computer. I need your help! Call Mike at 7813213124. My operating system is 10.11.6 and I cannot upgrade. Please help

I updated Firefox and overrode the working version I was using. The new version error message is: Requires osx 10.12 or later. I cannot upgrade my Mac operating systems. It’s and old MacBook Pro I cannot access the internet. Safari does not work on my computer. I need your help! Call Mike at 7813213124. My operating system is 10.11.6 and I cannot upgrade. Please help

Alla svar (1)

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 25 Contributor
more options

The last release of Firefox for your OS version was 78.15.0esr (ESR stands for Extended Support Release, Firefox Mac OS X 10.9, 10.10 and 10.11 users move to Extended Support Release).

You can download from here:

https://archive.mozilla.org/pub/firefox/releases/78.15.0esr/mac/en-US/

If you prefer a locale/language other than U.S. English, click the .. link on that page to move up to the directory of different locales/languages and then click into the desired one.

After downloading the file, use the steps here: How to download and install Firefox on Mac.

Success?

I assume the later version of Firefox never ran, so it didn't make your data files incompatible with the older release. However, if it did, then reversing that would involve other steps.

Note: this forum does not accept email replies, so please follow up in this thread at https://support.mozilla.org/questions/1419495.