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How to disable shutdown button on the Log-in screen

Unlike in Windows NT Server, Windows NT Workstation's log-in screen has a "Shutdown" button which you can use to shutdown the system without ever logging in. Here's how to disable Windows NT Workstation's "Shutdown" button on the initial log-in screen:
  • Run "Registry Editor" (run "RegEdit.exe" or "RegEdt32.exe")
  • Select the following key:

    SOFTWARE\Microsoft\Windows NT\
    Current Version\Winlogon

  • Add a value named "ShutdownWithoutLogon" of type "REG_SZ" and set it to "0".
  • Restart Windows
Applicable Keywords : Windows NT, Windows NT 3.x, Windows NT 4.x, Windows
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