An image forming apparatus including a printing-data-receiving unit configured to receive a printing-data-item including a user identification information item and a password, and to save the printing-data-item in a storage device; a user-authentication unit configured to receive input information specifying a user identification information item of a user, and to authenticate the user based on a managing unit that manages association information associating user identification information items with passwords; a list-display unit configured to cause a display device to display a list of printing-data-items each including the same user identification information item as that of the user; and a printing-control unit configured to execute a printing job of a printing-data-item selected from the list, wherein in the event that there is a printing-data-item that cannot be printed, the printing-control unit does not cancel a printing job of another printing-data-item that can be printed.