''<p>chickinelliart [[#question-1485044|said]]</p>'' <blockquote>The Mac I am on uses OS X Yosemite V10.10.1, its an older computer but I luv it and I would still like to use firefox, is there a fix for this so I can still use this browser? Or, am I going to have to change to chrome? mark </blockquote> Firefox 78.15.0esr released on October 5, 2021 was the last version to still support the old eol macOS 10.9, 10.10, 10.11 https://support.mozilla.org/en-US/kb/firefox-mac-osx-users-esr Firefox 79.0 to 115 ESR requires macOS 10.12, 10.13, 10.14 at minimum to run. https://support.mozilla.org/en-US/kb/firefox-users-macos-1012-1013-1014-moving-to-extended-support As for Chrome I know Google dropped support of the old macOS 10.11 and 10.12 as of Chrome 104 released back on August 2, 2022. Been harder to confirm when Chrome dropped the older macOS 10.10. They have dropped support for macOS 10.13, 10.14 as of Chrome 117 and on. Pretty much every other major web browser is Chrome/Chromium based so they are not an option. If your hardware allows you to upgrade your macOS to at least 10.12 (ten.twelve) then you would be able to run the still currently supported Firefox 115 ESR. At least for a while as 115.21.0esr in March is the last planned update unless Mozilla decides to extend updates again. btw I moved this thread from Firefox for iOS to Firefox section as you have macOS. The iOS is the mobile OS used on iPhones and early iPads as more current ones uses the similar iPadOS.