Same problem with me. i developed application for Android 6.0 Marshmallow it works perfect but when i install same application in Android 4.4.4 Kitkat it is not working getconnection error ConnURL = "jdbc:jtds:sqlserver://192.168.10.7:1433;" + "databaseName=salu;user=sa;password=dahar;"; conn = DriverManager.getConnection(ConnURL);