Consider the following scenario:
You install Microsoft Forefront Threat Management Gateway (TMG) 2010 Service Pack 1 (SP1) on a stand-alone array member.
You configure Forefront TMG 2010 Enterprise Management Server (EMS) to manage an array.
You try to join the stand-alone array member to the array.
In this scenario, the stand-along array member does not join the array, and then you receive an error message that resembles the following:
This issue occurs because of a code error in Forefront TMG 2010 SP1.
To resolve this issue, install the software update that is described in the following Microsoft Knowledge Base (KB) article:
2433623 Software Update 2 for Microsoft Forefront Threat Management Gateway (TMG) 2010 Service Pack 1
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about software update terminology, 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