A communication apparatus includes at least one memory that stores a set of instructions, and at least one processor that executes the instructions, the instructions, when executed, causing the communication apparatus to perform operations including verifying, by communicating with an external device, whether the external device is an external device that passed a predetermined certification, and displaying a screen for selecting an authenticator, wherein on the screen, a display item for an external authenticator verified as the external device that passed the predetermined certification and a display item for an external authenticator that failed to be verified as the external device that passed the predetermined certification are displayed in a distinguishable manner based on a result of the verification.