@mitu it's just curios issue i obtain right now.
i open file explorer \Retropie and it's ask to me credentials.
Tryed to put some of combination like "pi/raspberry" "pi/retropie" "retropie/raspberry" and it's no works.
From file explorer i put \192.168.1.159 (ip of my pi4) and all shared folder it's be open whitout any request.
It's a windows 10 recent changes ? Lol.......