Microsoft KB Archive/185219

= IIS 4.0 with Multiple Certificates May Return Error =

Article ID: 185219

Article Last Modified on 9/22/2005

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APPLIES TO


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

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This article was previously published under Q185219



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
When you are using a 40-bit browser and try to connect to a 128- bit Internet Information Server (IIS) 4.0 computer using a secured connection, you may receive the following error instead of the 403.5 Forbidden SSL 128 required error message:

The server has received bad data from client



CAUSE
This problem occurs only if there are multiple certificates installed on the server. Schannel.dll does not handle multiple certificates correctly.



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 that this is a problem in Windows NT 4.0 and Windows NT Server 4.0, Terminal Server Edition. 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.

Keywords: kbbug kbfix kbqfe kbhotfixserver KB185219

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