Janusz Lisiecki [https://community.jboss.org/people/phobo] created the discussion "Communication between JBoss 5.1.0 GA and JBoss AS 7.1.1" To view the discussion, visit: https://community.jboss.org/message/803806#803806 -------------------------------------------------------------- In my case I have an application deployed in JBoss 5.1.0 that needs to communicate with another application deployed in JBoss AS 7.1.1. Is there an option for such communication using JBoss Remoting? I'm getting an exception like this: javax.security.auth.login.LoginException: java.util.ServiceConfigurationError: org.xnio.XnioProvider: Provider org.xnio.nio.NioXnioProvider could not be instantiated: java.lang.NoClassDefFoundError: Could not initialize class org.xnio.nio.NioXnioProvider at java.util.ServiceLoader.fail(ServiceLoader.java:207) I have tried to add jboss-client.jar (from JBoss 7) to directory JBoss/lib in JBoss 5, and then the exception was: javax.security.auth.login.LoginException: java.util.ServiceConfigurationError: org.xnio.XnioProvider: Provider org.xnio.nio.NioXnioProvider could not be instantiated: java.lang.NoSuchMethodError: org.jboss.logging.Logger.tracef(Ljava/lang/String;Ljava/lang/Object;)V at java.util.ServiceLoader.fail(ServiceLoader.java:207) as I understand there is different api for logging in each JBoss versions.  -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/803806#803806] Start a new discussion in JBoss Remoting at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]