Troubleshooting the installation
Published: November 15, 2009
Updated: February 1, 2011
Applies To: Forefront Threat Management Gateway (TMG)
This topic provides guidance for diagnosing and resolving installation issues you may encounter with Forefront TMG when:
Upgrading to Windows Server 2008 R2
Installing from a network drive
Group Policy enforces Windows Firewall
|For the complete flow of troubleshooting Forefront TMG installation problems, download the Troubleshooting Forefront TMG Services SuperFlow (http://go.microsoft.com/fwlink/?LinkID=182922) at the Microsoft Download Center.|
If you installed Forefront TMG on a computer running Windows Server 2008, and you want to upgrade the operating system to Windows Server 2008 R2, you must perform a clean installation of Windows Server 2008 R2. The supported upgrade path is:
Export the Forefront TMG configuration.
Perform a clean installation (not an upgrade) of the new operating system.
Install Forefront TMG.
Import the Forefront TMG configuration.
If you are running the Performance Tool or Setup from a shared drive, make sure that the computer automatically reconnects to this drive after system restart. These two applications may require or initiate a restart, and failure to locate them after restart may result in a failed installation.
When installing Forefront TMG on a computer that is joined to a domain with Group Policy object (GPO) enforcement of Windows Firewall, the installation will not complete successfully because Setup tries to disable the Windows Firewall. As a workaround, you can direct Setup to ignore this error by adding a flag to the Windows Registry, as follows:
Open the Windows Registry using the command regedit.
Tip: It is recommended that you back up the registry before making any changes.
Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\RAT\Stingray\Debug\SETUP.
Right-click IGNORE_WINDOWS_FIREWALL_GPO_ENFORCEMENT, select Modify, and change the Value data to 1.