An image-forming apparatus includes a first display control unit configured to control so as to change an authentication state from a not-log-in state to a log-in state when a log-in request is received and if a authentication of a user succeeds and display an operation screen on an operation unit of the image-forming apparatus based on personal setting information associated with user-identification information by which the user is identifiable, and a second display control unit configured to control so as to change the authentication state from the log-in state to the not-log-in state when a log-out request is received and displays a screen which prompts input of user information on the operation unit based on shared setting information that is shared by a plurality of users.