Thanks, using the correct dependency fixed it. Running security.ejb.server.SecurityManagerTest | Tests run: 16, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 6.608 sec | For those interested, I only needed to add a single "pom" dependency to my JUnit test pom.xml file and that brings in all the necessary client jars: | <dependency> | <groupId>org.jboss.jbossas</groupId> | <artifactId>jboss-as-client</artifactId> | <version>5.0.0.GA</version> | <type>pom</type> | </dependency> View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4198365#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...