Article ID: 2472894 - Last Review: February 25, 2011 - Revision: 1.0

"HTTP/1.1 502 - Error 11 Bad format" error when you access SSL websites that use SAN certificates in Forefront TMG Server 2010 if a non-English version of a Windows operating system is installed

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SYMPTOMS

Consider the following scenario:
  • You have a computer that is running a non-English version of a Windows operating system.
  • You enable the HTTPS Inspection feature in Microsoft Forefront Threat Management Gateway (TMG) Server 2010 that is installed on the computer.
  • You access certain Secure Sockets Layer (SSL) websites that use Subject Alternative Name certificates.
In this scenario, you may receive an error message that resembles the following:  
HTTP/1.1 502 - Error 11 Bad format.


Notes
  • This issue does not occur if you disable the HTTPS Inspection feature in Forefront TMG Server 2010.
  • This issue does not occur if the computer runs an English version of the Windows operating system.

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CAUSE

This issue occurs because Forefront TMG Server 2010 has some hard-coded checks on non-localized strings for the SAN extension checks.
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RESOLUTION

To resolve this issue, install the hotfix that is described in the following Microsoft Knowledge Base (KB) article:
2498770  (http://support.microsoft.com/kb/2498770/ ) Description of the TMG Server rollup package
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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
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MORE INFORMATION

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684  (http://support.microsoft.com/kb/824684/ ) Description of the standard terminology that is used to describe Microsoft software updates


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APPLIES TO
  • Microsoft Forefront Threat Management Gateway 2010 Enterprise
  • Microsoft Forefront Threat Management Gateway 2010 Service Pack 1
  • Microsoft Forefront Threat Management Gateway 2010 Standard
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Keywords: 
kbqfe kbsurveynew kbfix kbexpertiseinter KB2472894
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