Old Version: Waterfox Browser

Title: Revisiting Waterfox: A Blast from the Past with an Old Version

Step 4 – Disable built-in add-on updates

about:addons → Gear icon → Uncheck "Update Add-ons Automatically". waterfox browser old version

B. Waterfox Current (G4 Series – Not "Old")

• Based on: Firefox ESR 115+.
• WebExtension only: No legacy add-ons.
• Why people downgrade from this: Users try G4, hate the WebExtensions limit, then search for "Waterfox browser old version" to go back to Classic.

user_pref("dom.security.https_only_mode", true);
user_pref("webgl.disabled", true);
user_pref("media.autoplay.enabled", false);
user_pref("browser.safebrowsing.enabled", false); // no longer updated anyway

5. Performance Characteristics

• 64-bit optimizations provided:
  • Type about:profiles in the address bar.
  • Create a new profile called "ClassicLegacy."
  • Set it as default for this installation only. This prevents your modern browser’s bookmarks/passwords from corrupting.

  ⚠️ Important Security Warning

  • Old versions do not receive security updates.
  • Vulnerabilities known from Firefox 56–68 era remain unpatched.
  • Do not use old Waterfox for: Online banking, logging into sensitive accounts, or browsing untrusted sites.
  • Best use case: Internal tools, legacy intranet sites, or air-gapped / controlled environments.

  GitHub Releases (Waterfox Classic): The repository for the Classic branch. You can find specific builds like the 2022.11 release here. Title: Revisiting Waterfox: A Blast from the Past

  • DownThemAll! (full version with one-click folder downloads)
  • Old YouTube Layout restorers
  • Classic Theme Restorer
  • Pentadactyl / Vimperator (keyboard control)