Thanks for fast reply and for mantain the .Net Framework Slim up to date Rick but I ask about the addon described in the first topic of this thread. I want to add local language pack to dotNetFx45_Full_x**.Windows7.AddOn.WA addon (if possible / needed). As I can see this addon inject all files and reg entries of framework direct to offiline image like it has installed in online image using setupcomplete / normal install. I think this will reduce in few minutes the windows instalation right? Anyway thanks again for help.