Topic49

You can download the correct version from Mozilla.org

Almost everything you run on your computer is started by an EXE file (exceptions are Windows itself, drivers). They contain executable code for a computer to run, and can do anything.

https://www.mozilla.org/en-US/firefox/68.2.0/releasenotes/
Firefox esr 68.2.0 win64
if can not find what you want try this link to https://www.mozilla.org/en-US/firefox/all/#product-desktop-release