You install Microsoft Forefront Threat Management Gateway (TMG) 2010 Enterprise edition on the first node of a server.
You use the pre-populated serial number that is displayed in the installation wizard's license key box.
In this scenario, when you open the TMG console after the installation is complete, the incorrect edition of TMG is listed in the upper-right corner of the console. Instead of Enterprise, the edition is listed as Standard. Additionally, when you install the TMG 2010 Enterprise edition on other servers in the array, the other servers also display the Standard edition.
This issue was caused by a problem in Microsoft Forefront Threat Management Gateway 2010.
To resolve this problem, install the service pack that is described in the following Microsoft Knowledge Base article:
2555840 Description of Service Pack 2 for Microsoft Forefront Threat Management Gateway 2010
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