A few weeks ago I was finally able to install some updates on my ForeFront TMG server, so I installed SP1 of Windows Server 2008R2, all other updates and Internet Explorer 9.0. After noticing my internet connection didn’t work anymore I logged in on the server and wanted to check what was wrong using the Management Console.

This is when I noticed the ForeFront TMG Management Console didn’t work anymore. Every treenode I selected resulted in an alert message stating ‘Member not Found’, ‘Refresh failed’, etc.

At times like this you wish you had created a backup of the server, before you updated it.

Lucky for me I was able to go to the internet with a direct line on my router and search for a solution. Because these updates were long overdue, someone must have had the same issue as me. This is one of the reasons I don’t like working with new/beta software of area’s I don’t know much about. I know a thing or two about managing a Microsoft network, but most things are magic to me.

An answer to my problem could be found on the ForeFront Technet forums of Microsoft .

To fix the issue you need to edit some file/html of ForeFront which resided on your local filesystem. The file which needs to be edited is: “C:\Program Files\Microsoft Forefront Threat Management Gateway\UI_HTMLs\TabsHandler\TabsHandler.htc”.
Open this file using Notepad as an Administrator.