[MrGregorjo]

I'm using sockets in my application.
And I just noticed that background sockets don't work any more on Windows 10 (desktop devices).

Does anybody else experience same issue?

I tested on mobile phones and emulators and It works as expected but on desktop I receive some gibberish data.

[MrGregorjo]

Found the solution
instead of using

await socket.ConnectAsync(new Windows.Networking.HostName(uri.Host), uri.Port.ToString(), SocketProtectionLevel.Tls12);

use

await socket.ConnectAsync(new Windows.Networking.HostName(uri.Host), uri.Port.ToString(), SocketProtectionLevel.PlainSocket);
await streamSocket.UpgradeToSslAsync(Windows.Networking.Sockets.SocketProtectionLevel.Tls12, hostName);