An image processing apparatus includes a registration unit configured to register a destination of file transmission, a selection unit configured to select whether to require a user to input, at time of transmission, authentication information required for the file transmission for each destination registered by the registration unit, a transfer unit configured to transfer received image data, and a control unit configured to prevent a destination for which it is selected to require the user to input the authentication information at time of transmission from being set as a transfer destination of the image data.