Windows 10 and Samba Share Connectivity Issue

Even though you have already set a password, it will still show this error.

HKey Local Machine / System / Current Control Set / Services / Lanman Workstation /

  Parameters

New DWord 32-bit

  AllowInsecureGuestAuth 1

https://techjourney.net/cannot-connect-to-cifs-smb-samba-network-shares-shared-folders-in-windows-10/