http://blogs.msdn.com/888_umdf_4_you/archive/2009/04/27/9571980.aspxIn my previous post about Filter Drivers , I mentioned that this time I would focus on a more UMDF centric stack. This one is pretty simple. For UMDF only based driver stacks, the single most important directive is the UmdfServiceOrder INF directvie.enCommunityServer 2.1 SP1 (Build: 61025.2)