Earlier versions available?
I need to have Firefox on my old Macbook pro, but its OS (10.11.6) will no longer update, and a new Firefox download won't take. Can I download an earlier compatible version?
Chosen solution
Step one: How do you completely turn off update checks in Firefox v64? You can use a policies.json file to disable updates for all users. https://github.com/mozilla/policy-templates/blob/master/README.md or https://winaero.com/blog/disable-updates-firefox-63-above/
You can use a policies.json file in the distribution folder in the Firefox installation folder instead as also listed in the article, so no need to use GPO keys in the Windows Registry. • https://support.mozilla.org/en-US/kb/customizing-firefox-using-policiesjson ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
You can use the ManualAppUpdateOnly policy in Firefox 87+ to enable only manual updates e.g. via "Help -> About Firefox".
- https://github.com/mozilla/policy-templates#manualappupdateonly
- https://support.mozilla.org/en-US/kb/customizing-firefox-using-policiesjson
Note that it is important to stay up to date and install the latest security patches.
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Chosen Solution
Step one: How do you completely turn off update checks in Firefox v64? You can use a policies.json file to disable updates for all users. https://github.com/mozilla/policy-templates/blob/master/README.md or https://winaero.com/blog/disable-updates-firefox-63-above/
You can use a policies.json file in the distribution folder in the Firefox installation folder instead as also listed in the article, so no need to use GPO keys in the Windows Registry. • https://support.mozilla.org/en-US/kb/customizing-firefox-using-policiesjson ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
You can use the ManualAppUpdateOnly policy in Firefox 87+ to enable only manual updates e.g. via "Help -> About Firefox".
- https://github.com/mozilla/policy-templates#manualappupdateonly
- https://support.mozilla.org/en-US/kb/customizing-firefox-using-policiesjson
Note that it is important to stay up to date and install the latest security patches.
Step two: Note: Some versions of Quantum change how the data files are set up, so they may not be backward compatible.
Install Older Version Of Firefox {web link} Be sure to read everything here.
If you still want to downgrade, look under; I still want to downgrade. Click the Directory of other versions and languages link. Look for the directory of the version that you want. But, remember that old versions may have security issues.
Note: If you know what version you want, press <Control> (Mac=<Command>) F to open the search bar. Then enter the version number to see the available files.
You should also check out
Firefox; Extended Support Release {web link}
ESR Notes
System Requirements
Firefox Mac OS X 10.9, 10.10 and 10.11 users move to Extended Support Release
Firefox 78 is the last supported version. You can download the latest Firefox 78esr installer for macOS 10.11 using one of these links: https://download.mozilla.org/?product=firefox-esr-latest-ssl&os=osx&lang=en-US https://www.mozilla.org/en-US/firefox/all/#product-desktop-esr
You need Firefox 78.15.0 ESR for Mac OS X 10.11
Firefox 78.15.0 ESR:
- https://www.mozilla.org/en-US/firefox/all/#product-desktop-esr
- https://www.mozilla.org/en-US/firefox/78.15.0/system-requirements/
- https://support.mozilla.org/en-US/products/firefox-enterprise/whats-new-firefox-enterprise
Note that the current Firefox 78.15.0 is the last version for your Mac OS X platform (mozilla-mac-eol-esr1), so you will no longer receive updates.