Today, if you want to talk to a serial device on Windows 10, you roll up your sleeves and download PuTTY or Tera Term. It's not hard. But every time you do, you’ll feel a tiny pang of loss for that blue-and-gray icon, sitting patiently in Accessories > Communications, waiting for you to scream a modem into life.
You search the Start menu for "HyperTerminal." Nothing. windows 10 hyperterminal
You open Control Panel. Nothing.