I wasn’t be able to login with guest account.
Temporary I created new account with password. Let’s say osmc:osmc
But I didn’t want additional account on start screen, so I created DWORD value in registry under this path:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList
with “osmc” as the name of the new value. This is hiding account from view, but still let you use it to log in to SMB shares.
It works and it’s much safer.
Out of curiosity, I still would like to know how to log in with guest account?