Unhandled Exception: System.Net.WebException: Error getting response stream (ReadDone1): ReceiveFailure ---> System.IO.IOException: EndRead failure ---> System.Net.Sockets.SocketException: Connection reset by peer
  at System.Net.Sockets.Socket.EndReceive (IAsyncResult result) [0x00000] in <filename unknown>:0
  at System.Net.Sockets.NetworkStream.EndRead (IAsyncResult ar) [0x00000] in <filename unknown>:0
  --- End of inner exception stack trace ---
  at System.Net.Sockets.NetworkStream.EndRead (IAsyncResult ar) [0x00000] in <filename unknown>:0
  at Mono.Security.Protocol.Tls.SslStreamBase.InternalReadCallback (IAsyncResult result) [0x00000] in <filename unknown>:0
  --- End of inner exception stack trace ---
  at System.Net.HttpWebRequest.EndGetResponse (IAsyncResult asyncResult) [0x00000] in <filename unknown>:0
  at System.Net.HttpWebRequest.GetResponse () [0x00000] in <filename unknown>:0
  at CRMOnlineSOAPRequests.CRMHelper.GetSOAPResponse (System.String url, System.String soapEnvelope) [0x00000] in <filename unknown>:0
  at CRMOnlineSOAPRequests.CRMHelper.createEntity (System.String[] keyValuesOneDimensionalArray) [0x00000] in <filename unknown>:0
  at CRMCreateEntity.Program.Main (System.String[] keyValuesOneDimensionalArray) [0x00000] in <filename unknown>:0
[ERROR] FATAL UNHANDLED EXCEPTION: System.Net.WebException: Error getting response stream (ReadDone1): ReceiveFailure ---> System.IO.IOException: EndRead failure ---> System.Net.Sockets.SocketException: Connection reset by peer
  at System.Net.Sockets.Socket.EndReceive (IAsyncResult result) [0x00000] in <filename unknown>:0
  at System.Net.Sockets.NetworkStream.EndRead (IAsyncResult ar) [0x00000] in <filename unknown>:0
  --- End of inner exception stack trace ---
  at System.Net.Sockets.NetworkStream.EndRead (IAsyncResult ar) [0x00000] in <filename unknown>:0
  at Mono.Security.Protocol.Tls.SslStreamBase.InternalReadCallback (IAsyncResult result) [0x00000] in <filename unknown>:0
  --- End of inner exception stack trace ---
  at System.Net.HttpWebRequest.EndGetResponse (IAsyncResult asyncResult) [0x00000] in <filename unknown>:0
  at System.Net.HttpWebRequest.GetResponse () [0x00000] in <filename unknown>:0
  at CRMOnlineSOAPRequests.CRMHelper.GetSOAPResponse (System.String url, System.String soapEnvelope) [0x00000] in <filename unknown>:0
  at CRMOnlineSOAPRequests.CRMHelper.createEntity (System.String[] keyValuesOneDimensionalArray) [0x00000] in <filename unknown>:0
  at CRMCreateEntity.Program.Main (System.String[] keyValuesOneDimensionalArray) [0x00000] in <filename unknown>:0

System.Net.ServicePointManager.ServerCertificateValidationCallback = (sender, certificate, chain, sslPolicyErrors) =>
{
    //Whatever the certificate, accept it.
    return true;
};

//Do your request

//Reset handling to normal.
System.Net.ServicePointManager.ServerCertificateValidationCallback = null;