Download Earlier Version: Of Firefox __exclusive__

: You will see a long list of folders named by version number (e.g., 115.0 , 52.0 ). Click on the version you wish to install. Choose Your Platform :

Mozilla strongly discourages using older versions due to . Install an older version of Firefox - Mozilla Support

: Disconnect from the web before running the installer to prevent the browser from automatically updating itself during the initial setup. download earlier version of firefox

: Before uninstalling the current version, back up your bookmarks and passwords.

: Once installed, immediately go to Settings > General > Firefox Updates and select "Check for updates but let you choose to install them" . : You will see a long list of

: On Windows, use "Add or Remove Programs." On Mac, move the Firefox application to the Trash.

: Modern Firefox (v67+) includes "downgrade protection." You may be prompted to create a new profile because using an old browser version with a newer profile can corrupt your data. Why You Should Be Cautious Install an older version of Firefox - Mozilla

: Click the link ending in .exe (Windows), .dmg (Mac), or .tar.bz2 (Linux) to begin the download. How to Safely Downgrade Firefox