title: How to change the wallpaper desktop with .bat
body: <p>I'm trying to change the wallpaper desktop with this command in .bat:</p>
  
  <pre><code>@echo off
  RUNDLL32.EXE user32.dll,UpdatePerUserSystemParameters
  reg add "HKCU\Control Panel\Desktop" /v Wallpaper /f /t REG_SZ /d c:\images\bella.jpg
  </code></pre>
  
  <p>but is not working.</p>
  
  <p>The idea is to have a group of images and change the background of the users</p>