Earlier this year I post a 6 part post entitled “Securing Exchange 2010 with Forefront Threat Management Gateway (TMG) 2010” which covered colocating Exchange 2010 Edge and Forefront TMG 2010 on the same server to create a a single, secure point of entry for all mail related services.

When Exchange 2010 SP1 was released in late August many people started to report seeing the following error in their event log:

“Microsoft Forefront TMG Managed Control service fails to start and the event viewer will contain a message that the service terminated with the following error : %%-2146233088”

The reason for this is that SP1 removed some of the existing cmdlets, in particular get-antispamupdates which is used by TMG when spam filtering functionality is enabled.

The forefront team recently announced the release of Software Update 1 for Forefront TMG 2010 SP1. This update resolves the issue.

Download Software Update 1 for Forefront TMG 2010 SP1 here