title: MVC3 site using Azure ACS & ADFS continually prompts for credentials when using Firefox and Chrome
body: <p>I've created a basic MVC 3 website that's using Windows Azure's Access Control Service (ACS) to perform user authentication against an Active Directory Federated Service (ADFS) endpoint. I followed the "Add STS Reference" wizard and the site runs fine and authenticates users just perfectly in IE.  However, when I use Chrome or Firefox it continually prompts for my credentials over and over again.  </p>
  
  <p>I found this post on technet that mentions the issue as it pertains to Firefox but there's no fix for Chrome mentioned, nor do I feel like the steps required to fix Firefox are practical in the real world (i.e. I can't expect end users to do this)</p>
  
  <blockquote>
    <blockquote>
      <p><a href="http://social.technet.microsoft.com/wiki/contents/articles/ad-fs-2-0-continuously-prompted-for-credentials-when-using-firefox-3-6-3.aspx" rel="noreferrer">http://social.technet.microsoft.com/wiki/contents/articles/ad-fs-2-0-continuously-prompted-for-credentials-when-using-firefox-3-6-3.aspx</a></p>
    </blockquote>
  </blockquote>
  
  <p>Has anybody else hit this snag?  What am I doing wrong?</p>