[h-e-w] unicode file-name-coding-system support? UTF16?

[K Murnau]

Hello,

I am trying to read and write files with Japanese/Chinese Characters
in their file name. Setting UTF8 does not work (Windows seems to treat
the UTF8 bytes as ASCII)).

I thought Windows uses UCS/UTF16 for its filenames, however, setting
the emacs variable file-name-coding-system to UTF16 is not accepted by
emacs...

It seems like other users are successfully reading/writing unicode
file names, what am I doing wrong?

Greetings,
K