Ok thank you Todd.

It seems also that the last version even does not support SMB2 only SMB1.5 see below dialect version

PS C:\WINDOWS\system32> Get-SmbConnection

ServerName ShareName UserName Credential Dialect NumOpens
---------- --------- -------- ---------- ------- --------
192.168.0.71 vol1 user1 user1 1.5 1

Regards,

Bruno.