title: IIS 401.3 With Windows Authentication 2016
body: <p>I am moving some old web applications from an old Server to a Server 2016.  We are using a domain account for the application identity and we need to use windows authentication.  I am getting a 401.3 error when I try a test.html page on the server.  I am only getting this for static content though as I tried a home.aspx page and that page worked.  </p>
  
  <p>Things I have tried/checked</p>
  
  <ul>
  <li><p>Static Content is installed under the Common HTTP Features</p></li>
  <li><p>The domain account used for the app pool has full access to the directory containing test.html</p></li>
  <li><p>Tried NTLM first as provider instead of Negotiate on IIS Windows Authentication Providers</p></li>
  <li><p>Tried "Enable Kernel-mode authentication" checked and unchecked</p></li>
  <li><p>Tried all settings of "Extended Protection" under Advanced settings for windows authentication.</p></li>
  <li><p>Tried ProcMon.  All I get when I filter for test.html is 2 QueryOpen operations with result SUCCESS</p></li>
  </ul>