* Make sure that you do not use [[Clear Recent History]] to clear the Browsing History. * Make sure that the History is set to at least 1 day: Tools > Options > Privacy > History: "Remember visited pages for at least" * Make sure that you do not start Firefox in Private Browsing mode (Tools > Stop Private Browsing is grayed, see [[Private Browsing]]) * To see History and Cookie settings in Tools > Options > Privacy, choose the setting "Firefox will: Use custom settings for history" You can look at these prefs on the about:config page. *http://kb.mozillazine.org/browser.history_expire_days (180) (also affects saved form data) *http://kb.mozillazine.org/browser.history_expire_days_min (90) * http://kb.mozillazine.org/browser.sessionstore.max_tabs_undo * http://kb.mozillazine.org/browser.sessionstore.max_windows_undo * http://kb.mozillazine.org/browser.sessionstore.resume_from_crash See also http://kb.mozillazine.org/about%3Aconfig