Unable to install .NET Framework 3.5 on Windows Server 2012 R2

I was recently attempting to install the .NET Framework 3.5 features on a Windows Server 2012 R2 instance, where this would fail with the below error message:  As the binaries are on demand and therefore not included the installation adding the features will attempt to contact Windows Update to retrieve the files required. In my … More Unable to install .NET Framework 3.5 on Windows Server 2012 R2