Hi
Is there any implementation of OnlineSubsystem for Xbox Live for Windows ?
I know that microsoft made UE4 UWP but the development of that branch stopped at 4.19.2 (https://github.com/MICROSOFT-XBOX-ATG/MICROSOFT_UWP_UNREAL)
Now the windows store allows to submit non-UWP applications to it.
Searching for the native api I’v found that C API exist to integrate Achievements/Presence of Xbox Live for Windows
(XSAPI C overview - Xbox Live | Microsoft Docs)
The link at bottom of the page leads only to git repository that contains C++ UWP API, there is nowhere mention about the mysterious C API that could be used in non-UWP code 
Anyone have any ideas how to approach this ? (or it’s not the right place to ask, and I should asm microsoft instead ?)