Running .NET 4 under a lower version of .NET

Question

Is it possible that the .NET 4 application will be launched if only the .NET Framework 3 is installed on the computer?

Answer 1

No, It is Immpossible.

They use different runtimes, and you cannot run an assembly that focuses on one runtime on another runtime.

.NET 2.0, 3.0, and 3.5 run at runtime 2.0.

.NET 4.0 has a new runtime.

Answer 2

No. 4-frame programs do not support backward compatibility.

Answer 3

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