Download Hotfix for .NET Framework 3.5.1 - Windows Vista Service Pack 2/Windows Server 2008 Service Pack 2 - KB2637518 from Official Microsoft Download Center

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Hotfix for .NET Framework 3.5.1 - Windows Vista Service Pack 2/Windows Server 2008 Service Pack 2 - KB2637518

Install this Hotfix to resolve the issue described in the Knowledge Base Article linked below.