Troubleshooting extensions and themes * https://support.mozilla.com/en-US/kb/Troubleshooting%20extensions%20and%20themes -> click '''Firefox''' button and click '''Options''' -> Privacy -> History section -> '''Firefox will: select "Use Custom Settings for History"''' -> REMOVE Checkmark from '''Permanent Private Browsing mode''' -> place Checkmarks on: 1) Remember my Browsing History 2) Remember Download History 3) Remember Search and Form History 4) Accept Cookies from sites -> click '''Exceptions...''' button -> type the addresses of the websites from which you want to Allow Cookies to be stored e.g. '''login.live.com''' , '''hotmail.com''' , '''live.com''' , '''msn.com''' , '''mail.yahoo.com''' , '''yahoo.com''' , etc. -> click '''Allow''' for each, One by One 4a) Accept Third-party Cookies -> '''Keep Until : select''' '''They Expire''' -> REMOVE CHECKMARK from CLEAR HISTORY WHEN FIREFOX CLOSES -> click '''Firefox''' button and click '''Options''' -> Security -> place Checkmarks on: 1) Warn me when sites try to install add-ons 2) Block reported attack sites 3) Block reported web forgeries 4) Remember Passwords for sites -> Click OK on Options window -> Restart Firefox Check and tell if its working. -> When you use '''Clear Recent History''' make sure NOT to select '''Cookies, Forms and Search History, Active Logins, Site Preferences''' * https://support.mozilla.com/en-US/kb/Clear%20Recent%20History#w_what-things-are-included-in-my-history