Remote mapping SMB Share not working on Windows

…i know… remote SMB/CIFS shares are not safe, but
i have my truenas with a DDNS (example: mynas.myddns.com)
139 and 445 ports are opened, in fact i can access and map my shares on my iphone over 5g connection and on my MacBook using smb://mynas.myddns.com/MyShare

but on windows i can’t reach the share (using \mynas.myddns.com\MyShare)
i can put my username and password, but after trying to connect, i am getting an error.

CIFS/SMB1.0 are enabled on both NAS and Windows, where am i wrong?