Let’s break down x360ce-lib64-r848-VS2010-48 into its five core components.
Yes. The library does not contain Microsoft code; it reverse-engineers the XInput API, which is legal for interoperability under fair use/US Copyright Office exemptions. However, modifying game files may violate some EULAs (though no developer has ever sued an end-user for using x360ce). x360ce-lib64-r848-VS2010-48
With newer "3.0" and "4.0" versions of x360ce available, why would anyone seek out ? it reverse-engineers the XInput API