title: C# The request was aborted: Could not create SSL/TLS secure channel with tls1.3
body: <p>We are unable to connect to an HTTPS server using <code>WebRequest</code> because of this error message:</p>
  <p><code>The request was aborted: Could not create SSL/TLS secure channel.</code></p>
  <p>i use this code on net framwwork 4.8, website use tls 1.3</p>
  <pre><code>            ServicePointManager.Expect100Continue = true;
              ServicePointManager.SecurityProtocol = (SecurityProtocolType)3072;
              ServicePointManager.DefaultConnectionLimit = 9999;
              ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls11| 
                                                     SecurityProtocolType.Tls12| 
                                                     SecurityProtocolType.Tls13;
              WebRequest.Create(&quot;https://manga1001.com/&quot;).GetResponse();
  </code></pre>