Firefox in windows xp

Are you not able to use Firefox on Windows XP?

You can use only older versions!! Like Firefox 52 ESR.

Ok, done!

The now rather old Firefox 52.9.0esr from June 26, 2018 was the last to support the old EOL Windows XP and Vista as Firefox 53.0 and later requires Windows 7 or later at least until Fx 115 ESR as Fx 116.0 and later requires Windows 10, 11 to run. https://support.mozilla.org/en-US/kb/end-support-windows-xp-and-vista Depending on what old CPU you have on the WinXP system it might be possible to install a Linux distro with a light desktop to be able to run more current Firefox versions. However the system will likely struggle with say playing videos on HTML5 players sites like Youtube and Twitch even at 360p or 480p. https://archive.mozilla.org/pub/firefox/releases/52.9.0esr/win32/ and pick your language like en-US. Note you can only run the 32-bit versions and not run 64-bit (Win64) version even if you have 64-bit Windows XP