Solution: accessing SMB shares from Windows 10

General Guides & How-tos
2

  1. This is the Group policy that needs to be enabled:
    Computer configuration\administrative templates\network\Lanman Workstation
    “Enable insecure guest logons”

  2. And this is the registry entry that needs to be added:
    [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters]
    “AllowInsecureGuestAuth”=dword:1

As mentioned, these settings are needed for some users using Windows 10 and can’t access SMB shares (like CoreElec or NAS) because those shares are without password.

Warning: Strictly speaking the advise of security experts is to secure all SMB shares with password but if, like me, you have a closed system and/or you are confident about your firewall, then you should be fine without