Hello, Team As I attempted to configure mpich-4.0.2 in my cygwin terminal, everything went on well until it failed to configure libfabric. The following error message was thus released upon termination. error: libfabric only builds on Linux, OS X, and FreeBSD. When I find out more information about libfabric, it seems it has support for Windows, so I do not surely know where the error comes from. Anyway, I hereby attach the files that communicate the status of the attempted configuration. Files that are not attached are those that were not produced. I appreciate further discussion/orientation. Cheers, Marshall