“In Forefront TMG 2010 configuration change is by default asynchronous for both Standard Edition and Enterprise Edition.
Some people have asked to be able to change the behavior to synchronous, so that the administrator will know the configuration has been loaded by the TMG computers when the Save Configuration Changes completes.
In order to change the behavior, create a text file with the following information and import it into the registry:..”
For the rest of the story, check out the TMG firewall blog over at:
DEBRA LITTLEJOHN SHINDER
MVP (Enterprise Security)