such [https://community.jboss.org/people/such] created the discussion "JBoss 7.1.1 - Not able to set app to root using jboss-web.xml" To view the discussion, visit: https://community.jboss.org/message/734346#734346 -------------------------------------------------------------- Hi I have the following jboss-web.xml in my app to set root context. <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE jboss-web PUBLIC     "-//JBoss//DTD Web Application 4.2//EN"     " http://www.jboss.org/j2ee/dtd/jboss-web_4_2.dtd http://www.jboss.org/j2ee/dtd/jboss-web_4_2.dtd"> <jboss-web> <context-root>/</context-root> </jboss-web> But I am getting this exception: ERROR [org.jboss.msc.service.fail] (MSC service thread 1-16) MSC00001: Failed to start service jboss.web.deployment.default-host./: org.jboss.msc.service.StartException in service jboss.web.deployment.default-host./: Failed to start service     at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1767) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]     at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [rt.jar:1.6.0_26]     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [rt.jar:1.6.0_26]     at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_26] Caused by: java.lang.IllegalArgumentException: Child container with name  already exists     at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:804)     at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:792)     at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:356)     at org.jboss.as.web.deployment.WebContextInjector.inject(WebContextInjector.java:62)     at org.jboss.as.web.deployment.WebContextInjector.inject(WebContextInjector.java:38)     at org.jboss.msc.inject.CastingInjector.inject(CastingInjector.java:55) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]     at org.jboss.msc.service.ServiceControllerImpl.doInject(ServiceControllerImpl.java:1549) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]     at org.jboss.msc.service.ServiceControllerImpl.access$1900(ServiceControllerImpl.java:49) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]     at org.jboss.msc.service.ServiceControllerImpl$StartTask.performInjections(ServiceControllerImpl.java:1780) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]     at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1741) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]     ... 3 more Any idea? Thanks -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/734346#734346] Start a new discussion in JBoss AS 7 Development at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]