Windows Authentication problem while connecting to MSSQL server from JDBC

Question

Trying to connect to MS SQL server via Windows Authentification from Java application that runs on Linux machine. Connection string:

jdbc:sqlserver://192.168.1.50\\SQLEXPRESS:1433;DatabaseName=MyData;integratedSecurity=true;authenticationScheme=JavaKerberos

Got connection error:

com.microsoft.sqlserver.jdbc.SQLServerException: Integrated authentication failed. ClientConnectionId:42aee675-fd0d-489e-af73-574ae5c304fa
       at com.microsoft.sqlserver.jdbc.SQLServerConnection.terminate(SQLServerConnection.java:2670) ~[mssql-jdbc-6.4.0.jre8.jar:?]
       at com.microsoft.sqlserver.jdbc.KerbAuthentication.intAuthInit(KerbAuthentication.java:131) ~[mssql-jdbc-6.4.0.jre8.jar:?]
       at com.microsoft.sqlserver.jdbc.KerbAuthentication.GenerateClientContext(KerbAuthentication.java:399) ~[mssql-jdbc-6.4.0.jre8.jar:?]
       at com.microsoft.sqlserver.jdbc.SQLServerConnection.sendLogon(SQLServerConnection.java:4306) ~[mssql-jdbc-6.4.0.jre8.jar:?]
       at com.microsoft.sqlserver.jdbc.SQLServerConnection.logon(SQLServerConnection.java:3409) ~[mssql-jdbc-6.4.0.jre8.jar:?]
       at com.microsoft.sqlserver.jdbc.SQLServerConnection.access$100(SQLServerConnection.java:85) ~[mssql-jdbc-6.4.0.jre8.jar:?]
       at com.microsoft.sqlserver.jdbc.SQLServerConnection$LogonCommand.doExecute(SQLServerConnection.java:3373) ~[mssql-jdbc-6.4.0.jre8.jar:?]
       at com.microsoft.sqlserver.jdbc.TDSCommand.execute(IOBuffer.java:7344) ~[mssql-jdbc-6.4.0.jre8.jar:?]
       at com.microsoft.sqlserver.jdbc.SQLServerConnection.executeCommand(SQLServerConnection.java:2713) ~[mssql-jdbc-6.4.0.jre8.jar:?]
       at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(SQLServerConnection.java:2261) ~[mssql-jdbc-6.4.0.jre8.jar:?]
       at com.microsoft.sqlserver.jdbc.SQLServerConnection.login(SQLServerConnection.java:1921) ~[mssql-jdbc-6.4.0.jre8.jar:?]
       at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectInternal(SQLServerConnection.java:1762) ~[mssql-jdbc-6.4.0.jre8.jar:?]
       at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:1077) ~[mssql-jdbc-6.4.0.jre8.jar:?]

How to understand this error and how to fix it?

UPD

If I remove authenticationScheme=JavaKerberos as following:

jdbc:sqlserver://192.168.1.50\SQLEXPRESS:1433;DatabaseName=MyData;integratedSecurity=true;

I have error:

java.sql.SQLException: No suitable driver found for
       at java.sql.DriverManager.getConnection(DriverManager.java:689) ~[?:1.8.0_171]
       at java.sql.DriverManager.getConnection(DriverManager.java:247) ~[?:1.8.0_171]

UPD 2

Leaving authenticationScheme=JavaKerberos and removing integratedSecurity=true as following:

jdbc:sqlserver://192.168.1.50\SQLEXPRESS:1433;DatabaseName=MyData;authenticationScheme=JavaKerberos

gives error:

com.microsoft.sqlserver.jdbc.SQLServerException: Login failed for user 'myuser'. ClientConnectionId:42aee675-fd0d-489e-af73-574ae5c304fa
        at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDatabaseError(SQLServerException.java:259) ~[mssql-jdbc-6.4.0.jre8.jar:?]
        at com.microsoft.sqlserver.jdbc.TDSTokenHandler.onEOF(tdsparser.java:256) ~[mssql-jdbc-6.4.0.jre8.jar:?]
        at com.microsoft.sqlserver.jdbc.TDSParser.parse(tdsparser.java:108) ~[mssql-jdbc-6.4.0.jre8.jar:?]
        at com.microsoft.sqlserver.jdbc.SQLServerConnection.sendLogon(SQLServerConnection.java:4548) ~[mssql-jdbc-6.4.0.jre8.jar:?]
        at com.microsoft.sqlserver.jdbc.SQLServerConnection.logon(SQLServerConnection.java:3409) ~[mssql-jdbc-6.4.0.jre8.jar:?]
        at com.microsoft.sqlserver.jdbc.SQLServerConnection.access$100(SQLServerConnection.java:85) ~[mssql-jdbc-6.4.0.jre8.jar:?]
        at com.microsoft.sqlserver.jdbc.SQLServerConnection$LogonCommand.doExecute(SQLServerConnection.java:3373) ~[mssql-jdbc-6.4.0.jre8.jar:?]
        at com.microsoft.sqlserver.jdbc.TDSCommand.execute(IOBuffer.java:7344) ~[mssql-jdbc-6.4.0.jre8.jar:?]
        at com.microsoft.sqlserver.jdbc.SQLServerConnection.executeCommand(SQLServerConnection.java:2713) ~[mssql-jdbc-6.4.0.jre8.jar:?]
        at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(SQLServerConnection.java:2261) ~[mssql-jdbc-6.4.0.jre8.jar:?]
        at com.microsoft.sqlserver.jdbc.SQLServerConnection.login(SQLServerConnection.java:1921) ~[mssql-jdbc-6.4.0.jre8.jar:?]
        at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectInternal(SQLServerConnection.java:1762) ~[mssql-jdbc-6.4.0.jre8.jar:?]
        at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:1077) ~[mssql-jdbc-6.4.0.jre8.jar:?]
        at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(SQLServerDriver.java:623) ~[mssql-jdbc-6.4.0.jre8.jar:?]
        at java.sql.DriverManager.getConnection(DriverManager.java:664) ~[?:1.8.0_171]
        at java.sql.DriverManager.getConnection(DriverManager.java:247) ~[?:1.8.0_171]

Answer 1

The app run on Linux machine, is that computer joined to a windows domain?

If not, then you may need to use a SQL authentication:

jdbc:sqlserver://192.168.1.50\SQLEXPRESS;user=MyUserName;password=*****;

Otherwise, this one to try without authenticationScheme=JavaKerberos and default port specified:

jdbc:sqlserver://192.168.1.50\SQLEXPRESS;DatabaseName=MyData;integratedSecurity=true;