Either the IP Adress did not work.
I found the solution by analyzing the server logs.
the ~osmc/.smb/smb.conf has bad default entries.
[global]
preferred master = no
local master = no
domain master = no
# client lanman auth = yes
# lanman auth = yes
sec=ntlmv2
socket options = TCP_NODELAY IPTOS_LOWDELAY SO_RCVBUF=65536 SO_SNDBUF=65536
lock directory = /home/osmc/.smb/
# client use spnego = no
client ntlmv2 auth = yes
name resolve order = host bcast
The problem is the simple and weak outdated password encryption which is not lnger supported by modern samba installations (i.e. > V4.5.).
The .smb/smb.conf should be pathced at next update to avoid more porblems of not linux aware users in future.
Regards
J. Sauer
BTW: Log files posting will not be bring an solution … worng password or password rejected are the informations I submittted in the first post.