Username is wrong, protocol might be (For any current OS you use port 445 not 139 for smb, username should be the fully qualified one, which is obtained like this (Use the one in the brackets):
031-521 SMB Login Error
031-522 SMB Login Error
031-523 SMB Server Error
031-524 SMB Scan User Overlimit
031-525 SMB scan client has no access right
031-526 DNS Error
031-528 In SMB Scan, Server Connection Error
031-529 SMB Error
031-530 SMB Error
031-531 SMB Error
031-532 SMB Error
031-533 SMB Error
031-534 SMB Error
031-535 SMB Error
031-536 SMB Error
031-541 SMB Error
031-546 SMB Error
031-547 SMB Error
