Keep this guide bookmarked—when that legacy application asks for .NET 2.0, you will know exactly what to do.
They are designed to run side by side. .NET 4.x uses a different CLR (version 4.0). Installing 3.5 will not break any 4.x applications.
When you install .NET Framework 3.5, the installer automatically includes the binaries and features from versions 2.0 and 3.0. Therefore, any application built for .NET 2.0 or 3.0 will run seamlessly on a machine that only has .NET 3.5 installed. net framework 35 includes net 20 and 30 download link
: Type "Turn Windows features on or off" in your taskbar search box and click the result. Select the Box : Look for .NET Framework 3.5 (includes .NET 2.0 and 3.0)
The Foundation of Modern Compatibility: Understanding .NET Framework 3.5 Installing 3
New features like LINQ (Language Integrated Query) and ASP.NET AJAX. How to Get .NET Framework 3.5
Since .NET 3.5 is a feature of the OS, enabling it is often faster than a manual download: : Type "Turn Windows features on or off"
A smaller initial download that fetches necessary components during installation. Available at the Dotnet Download Page How to Install on Windows 10 & 11