Microsoft KB Archive/925229

= A peer server is unable to successfully authenticate with a Live Communications Server 2005 Service Pack 1 access proxy by using TLS authentication =

Article ID: 925229

Article Last Modified on 6/27/2007

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APPLIES TO


 * Microsoft Office Live Communications Server 2005 Enterprise Edition
 * Microsoft Office Live Communications Server 2005 Standard Edition

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SYMPTOMS
Consider the following scenario:
 * You run Microsoft Office Live Communications Server 2005 Service Pack 1 (SP1) on a Microsoft Windows Server 2003 Service Pack 1 (SP1)-based server.
 * Live Communications Server 2005 is configured to have the Access Proxy role.

In this scenario, a Live Communications Server 2005 peer server is unable to successfully authenticate with the access proxy by using Transport Layer Security (TLS) certificate-based authentication.

You experience this problem if the peer server presents a certificate that does not contain a Certificate Revocation List (CRL) distribution point (CDP).

Note One example of this kind of certificate is a thawte SSL 123 certificate.



Hotfix information
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that this article describes. Apply this hotfix only to systems that are experiencing this specific problem.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
You must have the following items installed to apply this hotfix:  Live Communications Server 2005 Service Pack 1 (SP1). For more information, click the following article number to view the article in the Microsoft Knowledge Base:

897674 How to obtain Live Communications Server 2005 Service Pack 1

 The hotfix that is mentioned in the following Microsoft Knowledge Base article:

911996 Description of the update for Live Communications Server 2005: February 10, 2006, rereleased July 11, 2006



Restart requirement
You do not restart your computer after you apply this hotfix.

Hotfix replacement information
This hotfix is not replaced by any later hotfixes.

File information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Hotfix installation information
You must apply this hotfix to the following Live Communications Server 2005 servers:
 * Live Communications Server 2005 access proxy servers
 * Live Communications Server 2005 proxy servers
 * Live Communications Server 2005 Standard Edition servers
 * Live Communications Server 2005 Enterprise Edition front-end servers



WORKAROUND
To work around this problem, configure a full certificate to use with Live Communications Server 2005 TLS authentication.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
For more information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.

Additional query words: LCS2005, 0x80092012 CRYPT_E_NO_REVOCATION_CHECK

Keywords: kbbug kbfix kbhotfixserver kbqfe kbpubtypekc KB925229

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