title: Cannot access ADFS end point /adfs/ls/
body: <p>I set up an ADFS environment Windows Server 2012 R2 by the following steps: </p>
  
  <ol>
  <li>creating a certificate file;</li>
  <li>Install ADFS through Server management;</li>
  <li>Configure ADFS with the certificate file created in #1</li>
  </ol>
  
  <p>the above 3 steps runs successfully but I cannot access the endpoint <a href="https://[DomainControllerName]/adfs/ls" rel="nofollow noreferrer">https://[DomainControllerName]/adfs/ls</a>. Sometimes it shows 503 error page and sometimes it just says "the webpage is not available". </p>
  
  <p>Does anyone encounter the similar problem? Please help. Really appreciated!</p>