An information processing apparatus (MFP), in a state where a user is logged into the MFP as an automatic login user for which a user authentication is not required, when the user authentication is performed in order to log in as another user (a login user), compares a use authority of the automatic login user and a use authority of the login user for each function. When the result of the comparison is that there exists a function, within the functions for which usage is permitted for the automatic login user, for which the usage is not permitted for the login user, the MFP modifies the use authority of the login user for that function such that the usage of that function is permitted for the login user.