Hello Peter, JBoss is installed on a virtual machine with 512Ko mémory and 20Go HD space. I can run JBoss without service mode by lach start.bat -b 0.0.0.0 without problems. To install the service mode, I lauch "service.bat install" downloaded with JBoss 5.1.0 GA. When the service is installed, I lauch it. I modified nothing in the settings, I always use the default settings files. Thanks for your help Sanouk View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4254998#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...