title: Eclipse Update Failing with Message "Insufficient access privileges to apply this update"
body: <p>I'm running Eclipse under a Windows 7, 64-bit installation on which I have administrator privileges.</p>
  
  <p>Since I first installed Eclipse many months ago, I've been able to keep it up to date with the <strong>Help > Check for Updates</strong> function—but starting a couple of weeks ago, it gave the message</p>
  
  <blockquote>
    <p>Insufficient access privileges to apply this update.</p>
  </blockquote>
  
  <p>Even when I ran Eclipse as an administrator, I continued to get this message. How can I fix it?</p>