Firefox 57+ (Win) - Clearing Cache and Cookies

This document explains how to clear the cache and cookies from Mozilla Firefox 57.0 to the newest version

See Mozilla Support for the most up-to-date information: Mozilla Support 

  1. Click the Menu (three stacked horizontal lines) then click Settings.

    Menu
  2. On the left side, select Privacy & Security, then scroll down and select Clear Data....
    Settings
  3. In the pop-up menu, make sure both boxes are checked for Cookies and Site Data and Cached Web Content, then click Clear.

    Clear cache and cookies