Hello, If you are still logged in to at least '''one''' device, you can try doing this : Note : sometimes the email requires more verification, in which you have to create a new profile. '''1.''' Go to Firefox menu, click your account name/email, and select manage account. '''2.''' Under secondary email, click add. '''3.''' Add a new email address that is accessible and add. '''4.''' Check the new added email inbox for verification code and verify. '''5.''' After verifying, click the make primary button next to the new email address. '''6.''' Finally, remove the old and inaccessible email. If you are logged out, the only option is to create a new account, '''''But''''' *you can export your old bookmarks, history, and settings to a new profile. Here are the names of the files : Bookmarks & History: places.sqlite Passwords: logins.json and key4.db Cookies: cookies.sqlite Form History: formhistory.sqlite Session Data: sessionstore.jsonlz4