Firefox Old Version Jun 2026

Older computers or operating systems (like Windows XP or certain older Linux distributions) often cannot run the latest Firefox releases, which require more modern system resources.

# Extract to a custom location tar xjf firefox-52.0.2.tar.bz2 -C ~/firefox-old/ # Run from extracted folder without affecting system Firefox ~/firefox-old/firefox/firefox --profilemanager # Create a new profile called "oldprofile" # Launch with that profile ~/firefox-old/firefox/firefox -P oldprofile -no-remote

There are several reasons why you might want to roll back your browser: firefox old version

If you are looking to download an old version, you usually fall into one of three "Eras."

Mozilla maintains an official directory of all older releases: Older computers or operating systems (like Windows XP

Run Firefox with networking disabled, or use a local web server only.

Web developers and cybersecurity students often use specific old versions, such as Firefox 40.0 , to set up lab environments or test vulnerabilities in web application penetration testing [11]. Within a version folder, look for: Some users

Within a version folder, look for:

Some users prefer the UI or specific features that were removed or changed in newer updates, such as certain "open link in app" behaviors on Android [6]. Where to Find Older Versions