Hi boblucas, Your cookies shouldn't be cleared out during an update. Is a new Profile created? If that's the case, you can recover data from an "old" Profile - Recover user data missing after Firefox update https://support.mozilla.org/en-US/kb/recover-user-data-missing-after-firefox-update A good way to back up your cookies is with - Cookie Quick Manager https://addons.mozilla.org/en-US/firefox/addon/cookie-quick-manager/?utm_source=addons.mozilla.org&utm_medium=referral&utm_content=search