For the default HTTPS installation, port configuration is Port 8442. MSIB will fail to start if the initial specified port is already in use by another application, so it is important to ensure that an unused port is provided here.
If this installation requires a different port for SSL/TLS communication or if Port 8442 is in use by another application, first free up this port from any consumer before proceeding. Afterwards, go to Settings > SSL/TLS to enter the alternate port number.