Here is a quick registry edit you can perform that will enable you to lock your taskbar that will prevent any user from moving or resizing it.

  • Go to this location
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
  • Add this new DWORD
    • LockTaskbar
  • Set the value to 1
  • Done

Remember to always backup your registry before attempting any major edit, and if you need to repair your registry then run this scan - free registry scan.