title: How propagate modification of HKLM to gpedit?
body: <p>I would to modify (enable and set value) of a Machine Group Policy with PowerShell. I understood this kind of Policy is based on Registry. That's why I tried to add my value with <code>Set-ItemProperty</code>command.</p>
  
  <p>The new value is correctly set in registry but gpedit doesn't see it.
  I tried to use GroupPolicy commands but I don't see how address the Local Group Policy because I don't reach to get a correct GUID. </p>
  
  <p>The key I want to chang is this one: <code>HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run</code></p>
  
  <p>I think I miss something but I don't know what. An Idea ?</p>
  
  <p>Thanks</p>