Microsoft .net Framework 3.5 Sp1 Redistributable Package Free Download May 2026

: Full Redistributable Package (231 MB). Microsoft .NET Runtime Page : Official .NET Download Page .

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: : Full Redistributable Package (231 MB)

: Microsoft recommends using newer versions like .NET 8 for new app development, as .NET 3.5 is an older legacy version primarily used for running existing applications. Microsoft .NET Framework 3.5 Service Pack 1 Microsoft

: 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) . Official Download Links Download Microsoft

: You can use the Full Redistributable Package (offline installer), which contains all necessary files for installation without an internet connection. Official Download Links

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)