I think this fixed the problem for me. Chrome has a built-in extension to connect with Chromecast devices. Open Chrome and type the following into the address bar: chrome://flags/#load-media-router-component-extension Set the Media Router extension to disabled. Prior to that netstat was showing a connection to Chromecast Audio on port 8009. Wonder if other Google devices, such as Google Mini, etc. would attempt to connect to chrome browser and cause the same issue. EDIT: Scratch that. It came back after I rebooted.