title: Windows Authentication prompt appears if you access via domain name
body: <p>I have a web application hosted in IIS and configured with Windows Authentication. It is supposed to be SSO (Single sign-on) and work without prompting users for their credentials. It works in this way if I access it via server name or cname. Example:</p>
  
  <pre><code>https://serverName/applicationName
  https://cname/applicationName
  </code></pre>
  
  <p>However, it asks for user credentials if I access the application via full domain name such as:</p>
  
  <pre><code>https://serverName.domain.com/applicationName
  https://cname.domain.com/applicationName
  </code></pre>
  
  <p>Any ideas what the issue would be?</p>