Which of .NET Framework are you trying to install (e.g., 4.0, 4.5, 4.8)?
If you encounter issues during installation, try:
If you are running Windows 7, especially if you haven't updated in a while, this framework is necessary for: net framework 403019 windows 7 64 bits extra quality
After rebooting, you can confirm that the update was applied by checking the version of the mscorlib.dll file in C:\Windows\Microsoft.NET\Framework64\v4.0.30319 . Its details should reflect the 4.0.3 revision. Alternatively, look in Control Panel → Programs and Features → Installed Updates for “Update for Microsoft .NET Framework 4 (KB2600211)”.
Click the Start menu, type cmd , right-click , and select Run as administrator . Which of
This is the critical update that introduces SHA-2 code signing support for Windows 7.
To ensure high quality, you should use the rather than the Web Installer. The web installer is prone to network interruptions, which can lead to incomplete files. Alternatively, look in Control Panel → Programs and
Run the tool and allow it to apply recommended fixes to your MSI installer registry keys. Reboot your PC and retry your offline installer. Summary Checklist for a Clean Installation