Hi friends, I'm trying to use JBOSS 5.0 with MS SQLSERVER 2005, but I'm getting the following error: [JBossManagedConnectionPool] Throwable while attempting to get a new connection: null | org.jboss.resource.JBossResourceException: Could not create connection; - nested throwable: (org.jbo | ss.resource.JBossResourceException: Failed to register driver for: com.microsoft.sqlserver.jdbc.SQLS | erverDriver; - nested throwable: (java.lang.ClassNotFoundException: com.microsoft.sqlserver.jdbc.SQL | ServerDriver. I put the lib driver in the server/default/lib folder and my datasource-ds.xml is like this <?xml version="1.0" encoding="UTF-8"?> | <datasources> | <local-tx-datasource> | <jndi-name>MSSQLDS</jndi-name> | <connection-url> | jdbc:sqlserver://localhost;instanceName=SQL2005;portNumber=1433;databaseName=question; | </connection-url> | <driver-class> | com.microsoft.sqlserver.jdbc.SQLServerDriver | </driver-class> | <user-name>xxx</user-name> | <password>xxx</password> | <metadata> | <type-mapping>MS SQLSERVER</type-mapping> | </metadata> | </local-tx-datasource> | </datasources> | every time that I start the server, I get the error, what hell is going on...? Thanks to everyone. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4165932#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...