Microsoft KB Archive/187493

= Some Netscape Client Certificates Rejected by IIS =

PSS ID Number: 187493

Article Last Modified on 11/5/2003

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The information in this article 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 Q187493



SYMPTOMS
On some Netscape client certificates, Internet Information Server (IIS) may return the following message:

HTTP/1.1 403 Access Forbidden, This Virtual Directory requires a browser

that supports the configured encryption options.

NOTE: Other certificates from Netscape clients work fine.



CAUSE
IIS will sometime detect a certificate that is verifiable as unverified, but does not cause an unverifiable certificate to be verified.



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: Verisign client certificates ca SSL

Keywords: kbbug kbfix KB187493

Technology: kbiis400 kbiisSearch kbNTTermServ400 kbNTTermServSearch kbWinNT400search kbWinNTS400search kbWinNTsearch kbWinNTSsearch

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