Configuring Many-to-One Client Certificate Mappings for IIS 7/7.5

Many-to-one Client certificate mapping is used by the Internet Information Services (IIS) to associate an end user to a windows account when the client certificate is used for the user authentication. The user session is executed under the context of this mapped windows account by IIS. For this to work we need to ensure that…

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Troubleshooting HTTP 401.3 errors with Process Monitor

Last week I posted the following blog which showed how to use Process Monitor to troubleshoot service startup issues. http://blogs.msdn.com/webtopics/archive/2009/06/16/troubleshooting-service-startup-issues-with-process-monitor.aspx To continue on that topic, I ran across another issue recently where Process Monitor was again very helpful in troubleshooting. Problem – When browsing ASP pages, we were getting below error in the browser. Browsing…

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3 Simple Steps for Configuring an SPN for your Website

The following article is an excellent reference when trying to figure out how to set SPN’s for your IIS Site. http://support.microsoft.com/kb/929650 I wanted to focus on the SPN helper script in the article, and how it can be used in a very simple way when setting your own SPN’s, to avoid the common pitfalls we…

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Troubleshooting Anonymous authentication failures in IIS

We often get support calls on issues related to Anonymous authentication failures and this is something which we feel an Admin can fix without requiring our support. Our aim in this post is to ensure people have a good troubleshooting strategy for anonymous authentication failures. You can follow up this link for a detailed troubleshooting strategy for Anonymous…

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