title: The request failed with HTTP status 417: Expectation failed
body: <p>Without getting into much detailed code 
  I have an 'kiosk' application that is running in about 500-800 different 'kiosk' at about 50 locations. Very simple application that connects to internet via a Verizon MIFI (2-3 MIFI per location).  We believe that Verizon has made some changes to the network and now randomly I get </p>
  
  <blockquote>
    <p>The request failed with HTTP status 417: Expectation failed</p>
  </blockquote>
  
  <p>I have viewed <a href="https://stackoverflow.com/questions/11198393/the-request-failed-with-http-status-417-expectation-failed-using-web-services">The request failed with HTTP status 417: Expectation Failed - Using Web Services</a>
  and <a href="https://stackoverflow.com/questions/2468510/fb-connect-417-expectation-failed">FB Connect: (417) Expectation failed</a></p>
  
  <p>But you see I already had used </p>
  
  <pre><code>  System.Net.ServicePointManager.Expect100Continue = false
  </code></pre>
  
  <p>in my code.</p>
  
  <p>So one of the issues I have is the application isn't easy to test, and it will fail for 20-30 minutes or several days, then clears itself up.</p>
  
  <p>Changing the config to include</p>
  
  <pre><code>&lt;system.net&gt;
  &lt;settings&gt;
      &lt;servicePointManager expect100Continue="false" /&gt;
  &lt;/settings&gt;
  </code></pre>
  
  <p></p>
  
  <p>Would be a large task, I don't know it that would even fix it.  Since it is random I'm having troubles because I typically can't get it to fail in my office at my desk more than 1 time.</p>
  
  <p>I happen to use VB and .Net for the application and services that run with the 'kiosk'.</p>