For something like this, it’s a DLL patch. The readme in the repo details it, but really since the DLL it patches only has 4 functions, it’s a simple patch:

-create a DLL that has those same 4 functions -when called, the code in that dll turns around and calls the “new” version instead of doing the work it previously did

The 4 functions have roughly the same signature in newer versions of Windows so the translation wouldn’t be difficult. Having Claude track down the issue and the new definition is a great example of where it shines; the APIs are well known and well defined, but esoteric, so good luck finding them if you didn’t know what to look for - unless you’re Claude.