You'd want to be looking at these[1] instead, especially SetFileSecurity[2]. As noted, the "minimum supported" version means exactly that, and does not reflect

You'd want to be looking at these[1] instead, especially SetFileSecurity[2]. As noted, the "minimum supported" version means exactly that, and does not reflect when the API function was introduced. [1]: https://learn.microsoft.com/en-us/windows/win32/secauthz/low-level-security-descriptor-functions https://learn.microsoft.com/en-us/windows/win32/secauthz/low... [2]: https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-setfilesecuritya https://learn.microsoft.com/en-us/windows/win32/api/winbase/...