Recently, Microsoft has released.NET Framework 4.6.2 final- this version is part of Windows 10 anniversary Update – Windows 7 & 8.1 users can install this version of .NET on their computers and it will be installed as an update in Control Panel. To determine which .NET framework versions are installed, you need to know the release value of Dword for a subkey in the registry.
For more information, READ this: Check .NET Framework Version in Windows 10
While this could be an advanced and tedious process of knowing .NET version, portable and freeware third-party tool ASoft .NET Version Detector makes this easy. An update to this program is now available with support for .NET Framework 4.6.2 release.