(Anonymous enumeration of SAM accounts and shares is not allowed (the system default is allowed). Group Policy - Computer Configuration - Windows Settings - Security Settings - Local Security Policy - Security Options - Network Access: Anonymous enumeration of SAM accounts and shares is not allowed .Set to enabled Description: Use the ipc$ channel to build an empty connection and anonymously enumerate how many accounts the machine has. Obviously, there are certain security risks. It is recommended to set it to not allow empty connections.)