+ AA6YQ comments below
I am using Windows Defender. I will explore that.
I rebooted the computer
+ As a diagnostic step, try rebooting Windows into "Safe Mode with Networking". Commander won't be able to interact with your radios when Windows is booted in this way but if the Launcher and Commander reliably interact, then some application being automatically started when Windows is booted normally is the culprit; it's usually anti-malware.