Windows 8, and above version comes with version 4.x.x of .NET Framework. But if the user is upgrading from Windows 7 to Windows 8, .NET Framework 3.5 is fully enabled. Most of the existing software require version 3.5 of .NET Framework installed to be able to run. When you try to install an app that requires .NET Framework 3.5 on these latest Windows it asks to connect to Internet inorder to download required installation files.its difficult to download if user's internet speed is low. if...