Edit C:\Windows\PolicyDefinitions\CtrlAltDel.admx

??<?xml version="1.0" encoding="utf-8"?>

<policyDefinitions xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" revision="1.0" schemaVersion="1.0" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
  <policyNamespaces>
    <target prefix="ctrlaltdel" namespace="Microsoft.Policies.ControlAltDelete" />
    <using prefix="windows" namespace="Microsoft.Policies.Windows" />
  </policyNamespaces>
  <resources minRequiredRevision="1.0" />
  <categories>
    <category name="CADOptions" displayName="$(string.CADOptions)">
      <parentCategory ref="windows:System" />
    </category>
  </categories>
  <policies>
    <policy name="DisableChangePassword" class="User" displayName="$(string.DisableChangePassword)" explainText="$(string.DisableChangePassword_Help)" key="Software\Microsoft\Windows\CurrentVersion\Policies\System" valueName="DisableChangePassword">
      <parentCategory ref="CADOptions" />
      <supportedOn ref="windows:SUPPORTED_Win2k" />
    </policy>
    <policy name="DisableLockComputer" class="User" displayName="$(string.DisableLockComputer)" explainText="$(string.DisableLockComputer_Help)" key="Software\Microsoft\Windows\CurrentVersion\Policies\System" valueName="DisableLockWorkstation">
      <parentCategory ref="CADOptions" />
      <supportedOn ref="windows:SUPPORTED_Win2k" />
    </policy>
    <policy name="DisableTaskMgr" class="User" displayName="$(string.DisableTaskMgr)" explainText="$(string.DisableTaskMgr_Help)" key="Software\Microsoft\Windows\CurrentVersion\Policies\System" valueName="DisableTaskMgr">
      <parentCategory ref="CADOptions" />
      <supportedOn ref="windows:SUPPORTED_Win2k" />
    </policy>
    <policy name="NoLogoff" class="User" displayName="$(string.NoLogoff)" explainText="$(string.NoLogOff_Help)" key="Software\Microsoft\Windows\CurrentVersion\Policies\Explorer" valueName="NoLogoff">
      <parentCategory ref="CADOptions" />
      <supportedOn ref="windows:SUPPORTED_Win2k" />
    </policy>
  </policies>
</policyDefinitions>

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