Download Microsoft .NET Framework 4 Platform Update 1 – Design-time Update for Visual Studio 2010 SP1 (KB2495593) from Official Microsoft Download Center

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Microsoft .NET Framework 4 Platform Update 1 – Design-time Update for Visual Studio 2010 SP1 (KB2495593)

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This package contains updated design-time files for Visual Studio 2010 SP1 corresponding to Microsoft .NET Framework 4 Platform Update 1.