Verified Download Firefox Old Version
As a user who needs compatibility with legacy extensions, enterprise environments, or older operating systems, I want to browse and download older versions of Firefox so that I can install a specific version that meets my technical requirements.
[ Firefox 56.0.2 ] | Oct 9, 2017 • Last version with full XUL/legacy add-on support • ⚠️ 12 known security issues • Windows 7+ / macOS 10.9+ / Linux [ Download (52 MB) ] [ SHA256 ▼ ] download firefox old version
[ Firefox 55.0.3 ] | Aug 17, 2017 • WebExtensions introduced • ⚠️ 9 known security issues [ Download ] As a user who needs compatibility with legacy
Go to the official Mozilla release server: https://ftp.mozilla.org/pub/firefox/releases/ or older operating systems
Before installing an old version, you must understand the risks:
As a user who needs compatibility with legacy extensions, enterprise environments, or older operating systems, I want to browse and download older versions of Firefox so that I can install a specific version that meets my technical requirements.
[ Firefox 56.0.2 ] | Oct 9, 2017 • Last version with full XUL/legacy add-on support • ⚠️ 12 known security issues • Windows 7+ / macOS 10.9+ / Linux [ Download (52 MB) ] [ SHA256 ▼ ]
[ Firefox 55.0.3 ] | Aug 17, 2017 • WebExtensions introduced • ⚠️ 9 known security issues [ Download ]
Go to the official Mozilla release server: https://ftp.mozilla.org/pub/firefox/releases/
Before installing an old version, you must understand the risks: