: You must select the 64-bit (x64) version to match your 64-bit OS.
: RSAT for Windows 7 requires Windows 7 Professional, Enterprise, or Ultimate with Service Pack 1 (SP1) . active directory windows 7 64 bit download
Download the installer (often named amd64fre_GRMRSATX_MSU.msu ). Double-click the file to start the installation. : You must select the 64-bit (x64) version