I get a lot of questions from my customers if they should install TMG SP2 on their UAG server. The short answer is Yes. The longer answer is…
The answer from Microsoft when asking about TMG SP2 support on UAG was… “Tested and fully supported coexistence of UAG SP1 and UAG SP1 UP1 with TMG SP2“. So you have to have UAG SP1 or higher before you install TMG SP2.
But what about the new Update1 to UAG SP1? Well if you plan to add both TMG SP2 and UAG SP1 Update1 to your UAG, the recommended install order is to first install the TMG SP2 and then Update 1 for UAG SP1.