Going by the "Ignoring" and DEBUG level message, not sure whether that exception would stop the deployment. Is the microsoft-sqljdbc.jar valid? To ensure that its not corrupt and is in valid format, try out the following command and post the output: jar -tf microsoft-sqljdbc.jar Furthermore, the microsoft-sqljdbc.jar looks like a JDBC driver jar file which should actually be placed in the %JBOSS_HOME%\server\< serverName>\lib folder. If you don't need this jar file in the WAR file, then remove it and try deploying. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4169200#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...