1) You are using an old JDK - 1.5.0_06. Please download and install the latest 1.5 JDK. (Hold it, read and do step 2 instead.) 2) It also appears that you downloaded the JDK6 version of JBossAS. In that case you should download and install the latest JDK6. (Do not install it into Program Files, I have mine installed at c:/apps/jdk-1.6.0_07 3) It appears that you do not have JAVA_HOME set. You need to set it to where you installed you JDK. Example: set JAVA_HOME=c:\apps\jdk-1.6.0_07 View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4169080#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...