an attempt was made to access a socket in a way forbbiden by its access permissions. why?

Question

 private void StartReceivingData(string ipAddress, int iPort)
    {
        try
        {
            if (!_bContinueReciving)
            {
                //initia         


        

Answer 1

I'm developing an UWP application which connects to a MQTT broker in the LAN. I go a similar error.

MQTTnet.Exceptions.MqttCommunicationException: 'An attempt was made to access a socket in a way forbidden by its access permissions [::ffff:xxx.xxx.xxx.xxx]:1883'

ExtendedSocketException: An attempt was made to access a socket in a way forbidden by its access permissions [::ffff:xxx.xxx.xxx.xxx]:1883

Turned out that I forgot to give the app the correct capabilites ...