title: weblogic.application.ModuleException: Context path '' is already in use by the module: / application:
body: <p>When i am trying to run weblogic server 12c , it is throwing this error and is unable to start.</p>
  
  <pre><code>    &lt;Apr 16, 2013 2:42:57 PM IST&gt; &lt;Warning&gt; &lt;HTTP&gt; &lt;BEA-101384&gt; &lt;WLServlet annotation is deprecated, please use servlet 3.0 annotation instead. App:acsportal@acs-portal.war, Class:oracle.adfinternal.view.faces.activedata.AdsServlet&gt;
      &lt;Apr 16, 2013 2:42:58 PM IST&gt; &lt;Error&gt; &lt;Deployer&gt; &lt;BEA-149205&gt; &lt;Failed to initialize the application "acsportal" due to error weblogic.application.ModuleException: Context path '' is already in use by the module: / application: acs-portal
      weblogic.application.ModuleException: Context path '' is already in use by the module: / application: acs-portal
              at weblogic.servlet.internal.WebAppModule.prepare(WebAppModule.java:732)
              at weblogic.application.internal.flow.ScopedModuleDriver.prepare(ScopedModuleDriver.java:188)
              at weblogic.application.internal.ExtensibleModuleWrapper.prepare(ExtensibleModuleWrapper.java:83)
              at weblogic.application.internal.flow.ModuleListenerInvoker.prepare(ModuleListenerInvoker.java:100)
              at weblogic.application.internal.flow.ModuleStateDriver$1.next(ModuleStateDriver.java:172)
              Truncated. see log file for complete stacktrace
  
  
  Caused By: weblogic.application.ModuleException: Context path '' is already in use by the module: / application: acs-portal
  
              at weblogic.servlet.internal.WebAppModule.validateContextPath(WebAppModule.java:1392)
              at weblogic.servlet.internal.WebAppModule.registerWebApp(WebAppModule.java:1238)
              at weblogic.servlet.internal.WebAppModule.prepare(WebAppModule.java:723)
              at weblogic.application.internal.flow.ScopedModuleDriver.prepare(ScopedModuleDriver.java:188)
              at weblogic.application.internal.ExtensibleModuleWrapper.prepare(ExtensibleModuleWrapper.java:83)
              Truncated. see log file for complete stacktrace
  </code></pre>
  
  <p>After this error, the server hanged at this point
      </p>
  
  <pre><code>&lt;Apr 16, 2013 2:43:58 PM IST&gt; &lt;Warning&gt; &lt;WorkManager&gt; &lt;BEA-002919&gt; &lt;Unable to find a Work Manager with name wm/ProvisionWorkManager. Dispatch policy wm/ProvisionWorkManager will map to the default Work Manager for the application acs-portal&gt;
  </code></pre>
  
  <p>and is not starting after this line
  kindly help how to resolve this error.</p>