Copy a smFile to a shared folder on the same network?

I have this function:

public boolean copyFiles() {

        try{

            StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();

            StrictMode.setThreadPolicy(policy);


            String user = "username";
            String pass ="password";


            //Archivo a Copiar
            String urlconvert  = "smb://IP/Compartido/test12.txt";
            NtlmPasswordAuthentication auth = new NtlmPasswordAuthentication(
                    "DOMINIO.COM", user, pass);

           SmbFile sFile = new SmbFile(urlconvert, auth);

            //Destino
            String sharedFolder2="Test";
            String url = "smb://IP/" + sharedFolder2 + "/";

            SmbFile sDes = new SmbFile(url,auth);                
            sFile.copyTo(sDes);           
    }

And it returns this error:

  

W / System.err: jcifs.smb.SmbAuthException: Logon failure: unknown user   name or bad password. W / System.err: at   jcifs.smb.SmbTransport.checkStatus (SmbTransport.java:546)                     at jcifs.smb.SmbTransport.send (SmbTransport.java:663)                     at jcifs.smb.SmbSession.sessionSetup (SmbSession.java:390)                     at jcifs.smb.SmbSession.send (SmbSession.java:218)                     at jcifs.smb.SmbTree.treeConnect (SmbTree.java:176)                     at jcifs.smb.SmbFile.doConnect (SmbFile.java:911)                     at jcifs.smb.SmbFile.connect (SmbFile.java:957)                     at jcifs.smb.SmbFile.connect0 (SmbFile.java:880)                     at jcifs.smb.SmbFile.copyTo (SmbFile.java:2304)                     at com.developer.garan.cutt.NetworkShareFileCopy.copyFiles (NetworkShareFileCopy.java:54)                     at com.developer.garan.cutt.MainActivity $ 1.onClick (MainActivity.java:76)

And I already have Write permissions in that folder with the user.