The doc[1](Connecting and Disconnecting Remotely chapter) about how to start ESB client part is out of data. Currently it's still use old way java -jar karaf-client.jar But it should be using the scripts bin/client instead should keep it same as described in karaf site[2] This issue is from the fuse forum[3] [1]http://fusesource.com/docs/esb/4.3.1/esb_runtime/index.html [2]http://karaf.apache.org/manual/2.1.99-SNAPSHOT/users-guide/remote-console.html [3]http://fusesource.com/forums/thread.jspa?threadID=2798