Select when prompted. Restart your computer once the process is complete. Method 2: Official Microsoft Download Links

While modern versions of Windows (10 and 11) come with newer frameworks pre-installed, version 3.5 remains essential because it includes the "legacy" libraries of .NET 2.0 and 3.0 that many older apps depend on.

Download Microsoft .NET Framework 3.5 from Official Microsoft Download Center

Here is everything you need to know about how to download and install .NET Framework 3.5 safely and effectively. Method 1: The Easiest Way (Windows Features)

Press the and type "Turn Windows features on or off" .

If the automated method fails or you are working on a machine without a stable internet connection, you can use the official installers from the Microsoft Download Centre .