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

• Microsoft Internet Information Server version 4.0
• Microsoft Windows NT Server version 4.0, Terminal Server Edition

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, please see the following article in the Microsoft Knowledge Base:

Q152734 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

Keywords : NT4SP4Fix kbbug4.00 kbfix4.00.sp4
Version : WINNT:4.0
Platform : winnt
Issue type : kbbug