Please refer to this Mozilla support article for information about backing up your Firefox profile that contains your settings and other data: *[[Back up and restore information in Firefox profiles]]

Firefox stores your personal data in the Firefox profile folder. *C:\Users\<user>\AppData\Roaming\Mozilla\Firefox\Profiles\<profile>\ You can use this button to go to the current Firefox profile folder: *Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder) *http://kb.mozillazine.org/Profile_folder_-_Firefox See: *http://kb.mozillazine.org/Profile_backup *https://support.mozilla.org/kb/Backing+up+your+information