NET - Difficulties to Identify 4.x Based on File System

https://blogs.msdn.microsoft.com/rodneyviana/2014/12/23/identifying-the-net-version-you-are-running-2-0-4-5-4-5-1-or-4-5-2/

All 4.x versions are stored inside C:\Windows\Microsoft.NET\Framework\v4.0.30319 (4.5 for instance is written inside the same folder).