#Windows Error 633: The #modem (or other connecting #device) is already in use or not configured properly occurs if the communication (COM) port used by the modem has been reserved by another #software program, or if multiple Internet connections have been set up.
https://outsourcepath.com/resource/vpn-error-633-the-modem-or-other-connecting-device-is-already-in-use-in-windows-10
