You may see the following configuration dialog if you try to run an app that requires the. NET Framework 3.5 SP1 Download page and is available for Windows versions prior to Windows 10. NET Framework 3.5 SP1 offline installer is available on the.
You can also use these instructions for earlier Windows versions. NET Framework 3.5 to run an app on Windows 11, Windows 10, Windows 8.1, and Windows 8. NET Framework 3.5 on Windows 11, Windows 10, Windows 8.1, and Windows 8