to-do: this page needs to be updated
Some machines have the following directories:
C:\Program Files [(x86)]\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.0 C:\Program Files [(x86)]\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5
These are installed by Visual Studio to assist with the IDE.
It's not clear if these are present when only the SDK installed. Direct experience says they are not, but there are mentions of a checkbox called ".NET Development > Intellisense and Reference Assemblies" when installing the SDK. See: