title: VisualVM on new 64-bit laptop with JDK7 can't connect to JMX agent
body: <p>I have a Spring app that runs fine on WebLogic 10.3.x on my old Win7-32bit laptop with JDK 1.6.  I can make a local connection to the app from VisualVM and view JMX properties and execute JMX methods.</p>
  
  <p>I'm now setting up a new Win7-64bit laptop, with JDK 1.7 and WebLogic 12.1.2.0.  The app itself works almost without change (I had to add some package overrides in the weblogic-application.xml).</p>
  
  <p>However, when I installed VisualVM (1.3.7) and installed all of the relevant plugins, I can connect to the process, but when I try to open the MBeans tab, it says:</p>
  
  <pre><code>Data not available because JMX connection to the JMX agent could not be established.
  </code></pre>
  
  <p>There's nothing useful in the VisualVM log.  I don't have quick access to the old laptop right now.  Is there perhaps a WebLogic command-line option I need in order to allow JMX connections?</p>