Microsoft KB Archive/190009

= Client Cert. Mapping Only Works w/First Page on Proxy Connection =

Article ID: 190009

Article Last Modified on 6/22/2005

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APPLIES TO


 * Microsoft Windows NT Server 4.0, Terminal Server Edition
 * Microsoft Internet Information Server 4.0

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This article was previously published under Q190009



We strongly recommend that all users upgrade to Microsoft Internet Information Services (IIS) version 6.0 running on Microsoft Windows Server 2003. IIS 6.0 significantly increases Web infrastructure security. For more information about IIS security-related topics, visit the following Microsoft Web site:

http://www.microsoft.com/technet/security/prodtech/IIS.mspx



SYMPTOMS
Over a proxy, after the initial certificate mapping has occurred, subsequent attempts to map the certificate during the same connection cause an error message of type 401.



CAUSE
When going through a proxy, although Internet Information Server (IIS) does reset the authentication after each request, it does not also retry Mapping the next request.



RESOLUTION
To resolve this problem, obtain the latest service pack for Windows NT 4.0 or Windows NT Server 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

152734 How to Obtain the Latest Windows NT 4.0 Service Pack



STATUS
Microsoft has confirmed this to be a problem in Internet Information Server version 4.0. This problem was first corrected in Windows NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition Service Pack 4.

Additional query words: ssl proxie first following succeding ensuing successive consecutive multiple attempts akz

Keywords: kbbug kbfix KB190009

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