title: UTF-8 is not a supported encoding name in HTML Agility Pack
body: <pre><code>var web = new HtmlWeb();
  HtmlDocument doc;
  doc = web.Load(&quot;https://facebook.com&quot;);
  </code></pre>
  <p>Using HTML Agility Pack, it works fine on Google and other sites, but not Facebook or Twitter.  On those sites it gives error: &quot;Additional information: '&quot;utf-8&quot;' is not a supported encoding name. For information on defining a custom encoding, see the documentation for the Encoding.RegisterProvider method.&quot;</p>
  <p>I guess these websites are blocking the requests.  I searched this error, but none of the solutions were on point.  Is there a solution or workaround?</p>