Quote About: These packages contain .NET Framework 4.6.1 Full x86/x64 installers including updates (and Language Packs) integrated. For command-line options run <installer_name>.exe /? Note: The reason its called "Slim" is because the original MSI installers have been carefully edited to remove unnecessary setup junk, this should save 200+ MB of space on your HDD/SSD. OS: Windows Vista/Server 2008 SP2 x86/x64 or Windows 7/Server 2008 R2 SP1 x86/x