ok, now I found out, language packages (en-us) for fileserver or dedup have broke rsat to be installed, default windows 8.1 installation is en-us (default language for instalation), is it ok if I do remove these 2 language packages? Code: Microsoft-Windows-FileServer-Package~31bf3856ad364e35~amd64~en-US~6.3.9600.16384.cab Microsoft-Windows-Dedup-Package~31bf3856ad364e35~amd64~en-US~6.3.9600.16384.cab