Microsoft Keyboard Layout Creator on Windows 10

Microsoft Keyboard Layout Creator requires an older version of .NET, one which is not by default included in Windows 10. To install it type appwiz.cpl in the start menu and select Turn Windows features on or off. There check the .NET Framework 3.5.

Ref. https://www.ghacks.net/2017/06/12/run-net-framework-2-0-3-0-and-3-5-on-windows-10/