title: How to update windows explorer's shell extension without rebooting
body: <p>There is a windows explorer extension dll.<br>
  This dll can be update automatically if there is new one in our server.</p>
  
  <p>I rename the origin dll and download the new dll.
  But Windows Explorer never reload a new one.</p>
  
  <p>So I kill the windows explorer and relaunch.<br>
  But this is looked very ugly.
  And I don't want to recommend a user should reboot.</p>
  
  <p>How can I tell Windows Explorer to reload a new one?</p>