Steps: 1. created jandex.idx for simple.jar simple.jar is just having a servlet which just says helloworld.(Note: I have used annotation to mark it as servlet) 2. moved my servlet(simple.jar) to modules directory. <jboss location>/modules/simple/main 3. created modules.xml in which resource-root points to simple.jar 4. In my war file i dont have anything other than META-INF/jboss-deployment-structure.xml which points to 'simple' module with annotations="true" and deployed the war file 5. brought up the jboss and tried to access the <localhost>/simple/Simple note: simple=application name and Simple=servlet name Can you please let me know what i am missing in 7.X series?