This is Update 4.0.2 for Microsoft .NET Framework 4 containing a set of new features addressing top customer feature requests and important .NET Framework scenarios.

Service Pack 1 for .NET Framework 2.0

ADO.NET Entity Framework provides a strongly-typed LINQ data access experience over relational databases, including direct, efficient access to SQL Server.

Web Services Enhancements 2.0 SP3 for Microsoft® .NET (WSE) is a supported add-on to Microsoft Visual Studio® .NET and the Microsoft .NET Framework that enables developers to build secure Web services based on the latest Web services protocol specifications.

The XNA Framework Redistributable download provides game developers with the XNA Framework run-time libraries they can include with their product for redistribution on Windows XP and Windows Vista.

The Windows SDK provides tools, compilers, headers, libraries, code samples, and a new help system that developers can use to create applications that run on Microsoft Windows.

Update to .NET Framework 3.5 SP1 for the .NET Framework Assistant 1.0 for Firefox is required to address several compatibility issues with version 1.0 of the extension.

The Windows SDK contains pre-release documentation, samples, and tools designed to help you develop Windows applications and libraries using both Win32® and .NET Framework 3.0 technologies targeting Windows Vista.

The ADO.NET Data Services framework consists of patterns and libraries...web. This update to the Microsoft .NET Framework 3.5 SP1 provides additional features...provided in version 1.0 of the ADO.NET Data Services framework.