You can’t connect to a samba server configured with
map to guest = Bad User
Don’t try this at home:
Your risky solution:
Tune your GPO.
Computer Configuration\Administrative Templates\Network\LanMan Workstation\Enable Insecure Guest Logons
ATTENTION:
I’ve had faced situation when this didn’t do the trick. I hat to tune the registy:
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters] “AllowInsecureGuestAuth”=dword:1