FIX: ISA Server 2006 or Forefront TMG 2010 does not recognize a Subject Alternative Name certificate on a non-English Windows operating system

Consider the following scenario:

• You install Microsoft Internet Security and Acceleration (ISA) Server 2006 or Microsoft Forefront Threat Management Gateway (TMG) 2010 on a computer that is running a non-English version of a Windows operating system.
• You use ISA Server 2006 or Forefront TMG 2010 to publish an internal Secure Sockets Layer (SSL) Web server.
• You configure a certificate for the web server that contains a Subject Alternative Name field.

In this scenario, ISA Server 2006 or Forefront TMG 2010 does not recognize the certificate as a valid certificate that matches the server name.

Service pack information

This problem is fixed in Forefront TMG 2010 Service Pack 1.

For more information about how to obtain Forefront TMG 2010 Service Pack 1, click the following article number to view the article in the Microsoft Knowledge Base:

Hotfix rollup information

To resolve this issue, install the hotfix rollup package that is described in the following Microsoft Knowledge Base (KB) article:

To work around this issue, install ISA Server 2006 on a computer that is running an English version of Windows.

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Forefront TMG 2010 Service Pack 1.

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base: