Using localhost 127.0.0.1 sockets to communicate works when you debug, but when you go to install your UWP app its blocked! UDP sockets UDP isn’t permitted from UWP app to UWP app (stated here – “The UDP protocol is not supported”.) In our testing, UDP client is possible, if you use the telerik AppContainer Loopback […]

Microsoft guidance https://learn.microsoft.com/en-us/windows/uwp/communication/interprocess-communication