Ensure your Windows 7 is updated to support SHA-2 code signing , which is required for updates to .NET 4.6 and above as of 2019. Installation Steps
Open your web browser (on a working PC) and go to the official Microsoft Download Center. The exact URL path leads to the ".NET Framework 4.7.2 offline installer for Windows".
Click . You do not need to restart immediately, but it is highly recommended to restart your PC to finalize registry changes.
– Use this for alternative versions like the Developer Pack if you are building apps. 2. Minimum System Requirements