The .NET Framework has evolved significantly since its inception in 2002. .NET 2.0 was a major release that introduced several key features, including:
If you attempt to run an older piece of software and receive a prompt stating, it means the application was built using an older runtime that the system currently has disabled. Version 3.5 acts as a cumulative "wrapper" that provides the necessary libraries for applications designed for any of these three older versions. How to Enable .NET 2.0/3.5 in Windows 10 net 2.0 windows 10
While it is possible to install .NET 2.0 on Windows 10, there are some challenges and limitations to consider: How to Enable
If you need to run an old .NET 2.0 app but don’t want the framework permanently installed, consider using a Windows 10 virtual machine with the feature enabled only in that VM. Alternatively, test if the app runs on .NET 4.x with <supportedRuntime> redirects – many do. redirects – many do.