windows – Unicode-like encoding for filenames using Windows10-NFS-client and Linux-NFS-server

Problem

The NFS-Client of Windows10 Pro mount an NFS-share with lang=ansi by default. This causing problems using filenames with umlauts or asian characters (e.g. Kanji, Hiragana, Katakana, etc).

Details about my setup

Server is Debian GNU/Linux 10.6 (buster).
Support NFS-Version by that server from 3 to 4.2 (2 is disabled):

$ sudo cat /proc/fs/nfsd/versions
-2 +3 +4 +4.1 +4.2

The client is Windows10-Pro build 19041. It is unknown for me which NFS-protocol version is used by the client. This are the options for the mount point.

UID=-2, GID=-2
rsize=131072, wsize=131072
mount=soft, timeout=0.8
retry=1, locking=yes
fileaccess=755, lang=ANSI
casesensitive=no
s=sys

I know there are other options for lang=.

euc-jp: Japanese
euc-tw: Chinese
euc-kr: Korean
shift-jis: Japanese
Big5: Chinese
Ksc5601: Korean
Gb2312-80: Simplified Chinese
Ansi: ANSI-encoded

But none of them looks usefull for me.

Is there any possible solution?