This Forefront business has been quite a conundrum for a while: Old news first - TMG is being discontinued, you can read more about it here UAG marches on, at least for now. And hopefully will soon catch up with a slew of already released products - like Exchange 2013, SharePoint 2013, Windows 8, IE10, etc. - by actually supporting them. That stuff is coming in SP3 (Q1 2013) And while you are waiting for the SP3 to arrive, here's a quick post on how to fix one of the issues commonly associated with the SP2 upgrade - "The URL contains an invalid parameter" error