I do not quite understand your issue, please understand that issues posted here at many times is not common so we do not have a direct answer. Please elaborate on your issue so we can assist you further. Thank You!

See: *Tools > Options > General > Startup: Home page *https://support.mozilla.org/kb/How+to+set+the+home+page Try to use the SearchReset extension to reset some preferences to the default values. *https://addons.mozilla.org/firefox/addon/searchreset/ Note that the SearchReset extension only runs once and then uninstalls automatically, so it won't show on the "Firefox > Add-ons" page (about:addons). ---- Create a new profile as a test to check if your current profile is causing the problems. See "Creating a profile": *https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles *http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues If the new profile works then you can transfer some files from an existing profile to the new profile, but be careful not to copy corrupted files. *http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox