I used Build-In Compiler and also tried both inside Workbench and outside workbench.

I'm getting error "'C:\PROGRA~1\ANSYS' is not recognized as an internal or external command, operable program or batch file."
Where is this directory of "C:\PROGRA~1\ANSYS" tho?

I'm not sure warning should be ignore? but if I continue to Load it, it will become
"Error: The UDF library you are trying to load (libudf) is not compiled for parallel use on the current platform (win64).\n\nThe system cannot find the file specified."