How to install RSAT in WIndows 7 using command line. ? I have issue where after installing the kb for the RSAT for Windows 7sp1, when I do appwiz.cpl and see the OptionalFeatures where you can select to add or remove features in Windows 7, the thing comes up as blank. So even though I installed the kb update for the RSAT (to use aduc in windows client) I can't actually launch dsa.msc because it needs to be "activated" via the Programs and Features Optional Features portion... but that part is coming up completely blank. Is there a way to trigger the activation via powershell or command line instead of using GUI?