.NET Framework 4

The .NET Framework is Microsoft's comprehensive and consistent programming model for building applications that have visually stunning user experiences, seamless and secure communication, and the ability to model a range of business processes.

The .NET Framework 4 works side by side with older Framework versions. Applications that are based on earlier versions of the Framework will continue to run on the version targeted by default.

.NET Framework 4 includes the following new features and improvements:

• Improvements in CLR and BCL
• Improvements in ADO.NET
• Enhancements to ASP.NET
• Improvements in Windows Presentation Foundation
• Improvements to Windows Workflow Foundation and Windows Communication Foundation

Download and install the .NET Framework 4 redistributable package:

Install it now

Web Developers and Administrators:
To install .NET Framework 4 on a Web server or to set up an entire Web development environment, use the Microsoft Web Platform Installer.

.NET Framework 4 Related Resources:

• .NET 4 Framework Standalone version
• .NET Framework 4 Client Profile
• .NET Framework 4 Client Profile Standalone version
• What's New in the .NET Framework 4
• .NET Framework 4 Readme