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.NET 4.5 is an in-place update to .NET 4.0. This technical detail is vital. It replaces the CLR (Common Language Runtime) of version 4.0. The Offline Installer handles this delicate surgery by containing all necessary compatibility libraries, ensuring that applications built for 4.0 do not break when 4.5 is layered on top. microsoft net framework 4.5 offline installer
: New APIs for HTTP applications and native support for the WebSocket protocol. Elias clicked