: 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 .NET Framework 3.5 SP1.
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 : In newer versions of Windows 11,
: Full Redistributable Package (231 MB). Microsoft .NET Runtime Page : Official .NET Download Page .
: 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) . NET Framework 3
However, the best way to get it depends on your current version of Windows, as it is often already included as a built-in feature:
: You can use the Full Redistributable Package (offline installer), which contains all necessary files for installation without an internet connection. Official Download Links Microsoft
You can download the for free directly from the official Microsoft Download Center .