For organizations that have previously deployed DirectAccess using Windows Server 2008 R2, Forefront Unified Access Gateway (UAG) 2010, Windows Server 2012, or Windows Server 2012 R2, migrating to DirectAccess in Windows Server 2016 can be accomplished in one of two ways.
If DirectAccess is deployed with Windows Server 2012 or 2012 R2 , it is possible to perform an in-place upgrade of the operating system to Windows Server 2016. However, this is not generally recommended, as experience has shown limited success using this ...