Howdy,<BR><BR>Anyone know how to set up a site to use Integrated Authentication if it is available, but Anonymous Access if not? I don&#039;t want an authentication box to popup, but I would like the integrated user ID if available.<BR><BR>My thought is to put an IFRAME with an IA source page, and grab the AUTH_USER information from that request, or mark as anonymous with a custom 401 page. Of course the browser still prompts.<BR><BR>The problem is that the browser determines whether to prompt (or how many times) with an authentication box.<BR><BR>Is there a header I can send in the 401 response that tells the browser (if only IE, good enough) not to bother prompting, just show the 401 page?<BR><BR>I&#039;d welcome any other ideas on this too.<BR><BR>Thanks,<BR>Scott<BR>