if (share == null) { // IPC$ - try "anonymous" credentials
                ssn = trans.getSmbSession(NtlmPasswordAuthentication.NULL);
                tree = ssn.getSmbTree(null, null);
            } else if ((a = NtlmAuthenticator.requestNtlmPasswordAuthentication(url.toString(), sae)) != null) {
                auth = a;
                ssn = trans.getSmbSession(auth);
                tree = ssn.getSmbTree(share, null);