Websites remembering you and automatically log you on is stored in a cookie. * Create an allow cookie exception (Tools > Options > Privacy > Cookies: Exceptions) to keep such a cookie, especially for secure websites and if cookies expire when Firefox is closed. Make sure that you do not run Firefox in Private Browsing mode. * https://support.mozilla.com/kb/Private+Browsing Do not use Clear Recent History to clear the "Cookies" and the "Site Preferences" * https://support.mozilla.com/kb/Clear+Recent+History Clearing "Site Preferences" clears all exceptions for cookies, images, pop-up windows, software installation, and passwords. ---- * http://kb.mozillazine.org/Cookies * http://kb.mozillazine.org/Password_Manager * http://kb.mozillazine.org/User_name_and_password_not_remembered