: Microsoft .NET Framework 3.5 SP1.
: You generally do not need a separate download. You can enable it by going to Turn Windows features on or off in your Control Panel and checking the box for .NET Framework 3.5 (includes .NET 2.0 and 3.0) . : Microsoft
: In newer versions of Windows 11, .NET 3.5 has moved to a standalone deployment and may require a manual download if the built-in feature is not available. : Microsoft
Download Microsoft . NET Framework 3.5 Service Pack 1 from Official Microsoft Download Center. Download Center. Download Center. Microsoft .NET Framework 3.5 Service pack 1 (Full Package) : Microsoft