Here is the information regarding for Windows 7 . Important Note on the Version .NET Framework 4.0.3 was an update that required .NET Framework 4.0 (or 4.0.2) to be installed first. It is not a standalone full installer.
Ensure .NET Framework 4.0 is installed (if not, download the standalone installer from Microsoft). Step 2: Install the 4.0.3 update. net framework 4.0.3 download windows 7
Enabling .NET 3.5 (includes 2.0/3.0) and installing 4.8 – between them they cover nearly all apps. Here is the information regarding for Windows 7