Waterfox Browser Old Version May 2026
The Last of the XUL Warriors: Revisiting Waterfox Classic (Version 2020.10)
- Delete
update.exefrom the installation folder. - In
about:config, setapp.update.enabled→false,app.update.auto→false. - Wipe
C:\Users\<user>\AppData\Local\Waterfox\updatesdirectory.
- Bookmarks: In modern browser, go to Library > Export Bookmarks to HTML. In old Waterfox, import that HTML file.
- Passwords: Export as CSV (using a modern tool), then manually re-enter or use a dedicated password manager (Bitwarden's legacy extension may work).
- Extensions: You cannot directly transfer WebExtensions to legacy. You must re-download
.xpifiles from sites likelegacycollector.orgoraddons.thunderbird.net(the old Mozilla add-ons archive).
waterfox browser old version
Is running a a bad idea? The honest answer is: It depends on your threat model.





