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    Help and support for Microsoft .NET Framework 4.5, 4, 3.5, 3.0, 2.0 and 1.1. Links to troubleshooting information, community, and top issues.
    The .NET Framework provides a comprehensive and consistent programming model for building applications that have visually stunning user experiences with seamless and secure communication.
    Describes how to troubleshoot error code 0x80070643 or error code 0x643 when updates are installed for the .NET Framework by using Windows Update or Microsoft Update or when you update Microsoft Security Essentials.
    Describes the .NET Framework Repair Tool and how to obtain it.
    Describes a problem in which you receive an 0x800F0906, 0x800F081F, or 0x800F0907 error code when you try to install the .NET Framework 3.5 in Windows 8.1, Windows Server 2012 R2, Windows 8, or Windows Server 2012. Provides methods to resolve this problem.
    .NET Framework 4.5 is enabled by default in Windows 8. Windows 8 does not include .NET 3.5 by default, but the files for .NET 3.5 are available on the Windows 8 installation media as an optional feature. In this tutorial the user can know how to enable...
    Learn how to install earlier versions of .NET Framework on Windows 8, including version 3.5
    Fixes a System.NullReferenceException or System.Net.InternalException issue that occurs when many client web applications call a .NET Framework 4-based WCF service.
    Describes Reliability Update 2 for the .NET Framework 4. This update resolves several issues in the .NET Framework 4.
    Describes Reliability Update 1 for the.NET Framework 4. This update resolves some stability, reliability, and performance issues in the .NET Framework 4.

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