An information processing apparatus provided with a communication unit that can communicate with an external apparatus that provides a predetermined function requiring authentication processing, the information processing apparatus comprising: display control means for controlling a screen that is displayed on a display unit, wherein the control means can control the display unit to display a password input screen corresponding to the predetermined function in a case of not receiving authentication information from the external apparatus (S212:NO, S214); transmission means for transmitting a request signal for requesting the external apparatus for authentication information to be used in the authentication processing, via the communication unit; and requesting means for requesting use of the predetermined function provided by the external apparatus, via the communication unit, characterized in that the display control means is configured to display, on the display unit, a screen for prompting the user to perform a predetermined operation on the external apparatus for permitting transmission of the authentication information, in response to transmission of the request signal performed by the transmission means; and in a case of receiving (S211, S212:YES), via the communication unit, the authentication information which is sent from the external apparatus if the predetermined operation is performed by the user on the external apparatus, the requesting means requests (S217, S218) for use of the predetermined function via the communication unit based on the received authentication information, without prior display of the password input screen corresponding to the predetermined function of the external apparatus on the display unit by the display control means, and whereby the predetermined function can be used on the information processing apparatus. display control means for controlling a screen that is displayed on a display unit, wherein the control means can control the display unit to display a password input screen corresponding to the predetermined function in a case of not receiving authentication information from the external apparatus (S212:NO, S214); transmission means for transmitting a request signal for requesting the external apparatus for authentication information to be used in the authentication processing, via the communication unit; and requesting means for requesting use of the predetermined function provided by the external apparatus, via the communication unit, characterized in that the display control means is configured to display, on the display unit, a screen for prompting the user to perform a predetermined operation on the external apparatus for permitting transmission of the authentication information, in response to transmission of the request signal performed by the transmission means; and in a case of receiving (S211, S212:YES), via the communication unit, the authentication information which is sent from the external apparatus if the predetermined operation is performed by the user on the external apparatus, the requesting means requests (S217, S218) for use of the predetermined function via the communication unit based on the received authentication information, without prior display of the password input screen corresponding to the predetermined function of the external apparatus on the display unit by the display control means, and whereby the predetermined function can be used on the information processing apparatus.