Install the supported version of the .NET Framework from http://go.microsoft.com/fwlink/?LinkId=198034. If you are using ...

Install the supported version of the .NET Framework from http://go.microsoft.com/fwlink/?LinkId=198034. If you are using Windows Server 2008 R2, you can install this feature using Server Manager. Right-click Features and select Add Features. Select .NET Framework 3.5.1 Features and complete the wizard.