Microsoft claims "abstract" AF_UNIX sockets work, but they do not.

What I am seeing on Win10 18362 is that a process cannot see another
process's abstract sockets, connect(2) fails and bind(2) works
uniquely across multiple processes.

After debugging this issue and concluding the above, I found this:

microsoft/WSL#4240

So it seems I am not the only one to note it.

src/afunix.cc

@@ -10,7 +10,8 @@
 #include <common/path.h>
 #include <string.h>
 
-#if defined(__linux__) || defined(_WINDOWS)
+#if defined(__linux__)
+   /* || defined(_WINDOWS) */ /* Microsoft claims to support it, but it doesn't work */
 #define HAVE_ABSTRACT_SOCKETS 1
 #else
 #define HAVE_ABSTRACT_SOCKETS 0