The Microsoft .NET Framework 4 redistributable bundle introduces the .NET Framework runtime and related documents that are required to run and create applications to focus on the .NET Framework 4.
The .NET Framework 4 works one next to the other with more established Framework renditions. Applications that depend on prior forms of the Framework will keep on running on the rendition focused as a matter of course.
NET Framework 4 incorporates the accompanying new components and changes:
Enhancements in CLR and BCL
Enhancements in ADO.NET
Improvements to ASP.NET
Enhancements in Windows Presentation Foundation
Enhancements to Windows Workflow Foundation and Windows Communication Foundation