Did Firefox previously offer to store the name and password for that account? ---- The website may be using autocomplete=off to prevent Firefox from saving form data like name and password. You can remove autocomplete=off with a bookmarklet to make Firefox store form data like names and passwords. *http://kb.mozillazine.org/User_name_and_password_not_remembered Note that Firefox won't auto-fill saved form data automatically when autocomplete=off is used, so you need to double-click the empty name field to get a drop-down list. See also: *Saved Password Editor: https://addons.mozilla.org/firefox/addon/saved-password-editor/