Hi I want to use NTLM based authentication using jdbc connector in teiid. I'm using JBDS 7 with Teiid Designer 8.4. i have  downloaded Microsoft JDBC Driver 4.0 for SQL Server" fromhttp://www.microsoft.com/en-us/download/details.aspx?id=11774 (http://www.microsoft.com/en-us/download/details.aspx?id=11774)  and In JBDS teiid designer i have enabled *i**ntegrated Authentication* then I edited  Microsoft SQL Server driver definition,  on the Jar list tab i have  added  the sqljdbc_auth.dll from the \sqljdbc_4.0\enu\auth\x64  path ,but my am getting this error java.lang.ClassNotFoundException: com.microsoft.sqlserver.jdbc.SQLServerDriver   at java.net.URLClassLoader$1.run(URLClassLoader.java:366)   at java.net.URLClassLoader$1.run(URLClassLoader.java:355)   at java.security.AccessController.doPrivileged(Native Method)   at java.net.URLClassLoader.findClass(URLClassLoader.java:354)   at java.lang.ClassLoader.loadClass(ClassLoader.java:425)   at java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:789)   at java.lang.ClassLoader.loadClass(ClassLoader.java:358)   at org.eclipse.datatools.connectivity.drivers.jdbc.JDBCConnection.createConnection(JDBCConnection.java:297)   at org.eclipse.datatools.connectivity.DriverConnectionBase.internalCreateConnection(DriverConnectionBase.java:105)   at org.eclipse.datatools.connectivity.DriverConnectionBase.open(DriverConnectionBase.java:54)   at org.eclipse.datatools.connectivity.drivers.jdbc.JDBCConnection.open(JDBCConnection.java:81)   at org.eclipse.datatools.enablement.msft.internal.sqlserver.connection.JDBCSQLServerConnectionFactory.createConnection(JDBCSQLServerConnectionFactory.java:27)   at org.eclipse.datatools.connectivity.internal.ConnectionFactoryProvider.createConnection(ConnectionFactoryProvider.java:83)   at org.eclipse.datatools.connectivity.internal.ConnectionProfile.createConnection(ConnectionProfile.java:359)   at org.eclipse.datatools.connectivity.ui.PingJob.createTestConnection(PingJob.java:76)   at org.eclipse.datatools.connectivity.ui.PingJob.run(PingJob.java:59)   at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53) On the jar list i have added sqljdbc4.jar as well as sqljdbc_auth.dll  and tried  that time my jbossstudio is getting crash . Can anyone help me here? How do i do *i**ntegrated Authentication in teiid.* * (/update-advanced-comment.jspa?id=881988) Posted by forums Original post: https://community.jboss.org/message/882192#882192