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I have created a web application on port 443 https and configured to use windows authentication and without any host headers, providing no host header is requirement for Apps development, I have extended this web application on extranet on same port 443 and https and without any host headers, as expected IIS has stopped 1 web site because both are using blank host header and same port.

Can I create 2 IIS sites on same port without any host header by using a wildcard certificate? or nay other solution?

  • You need to have different bindings on the different IIS sites. Else IIS will not know where to send your requests that is why one site is stopped. – Robban1980 Apr 23 '15 at 2:54
  • Is there any solution to that problem? Will SSL certificate help me? – Ali Apr 23 '15 at 3:13
  • No, certificate will not help. The solution is that you need to have different bindings in IIS. Be it different IP addresses, Host names and/or ports. – Robban1980 Apr 23 '15 at 3:24
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To host more than one Web site on a Web server, you can assign a unique IP address to each Web site, designate a non-standard TCP port number for a Web site, or use host headers.

Their is no alternative solution and you have to adopt either one of the solution.

Why you want to host 2 sites on same Port without Host header?

  • I have 1 web application running on port 443 with windows authentication enabled and using default zone, I want to extend it to have an extranet zone with forms authentication, I don't want to use host headers onweb applications because all site collections in the web application will have their own host name using HNSC methodology. – Ali Apr 26 '15 at 5:36

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