Edit C:\Windows\PolicyDefinitions\WinLogon.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="winlogon" namespace="Microsoft.Policies.WindowsLogon2" />
    <using prefix="windows" namespace="Microsoft.Policies.Windows" />
  </policyNamespaces>
  <resources minRequiredRevision="1.0" />
  <categories>
    <category name="Logon" displayName="$(string.Logon)">
      <parentCategory ref="windows:WindowsComponents" />
    </category>
  </categories>
  <policies>
    <policy name="DisplayLastLogonInfoDescription" class="Machine" displayName="$(string.DisplayLastLogonInfoDescription)" explainText="$(string.DisplayLastLogonInfoDescription_Help)" key="Software\Microsoft\Windows\CurrentVersion\Policies\System" valueName="DisplayLastLogonInfo">
      <parentCategory ref="Logon" />
      <supportedOn ref="windows:SUPPORTED_WindowsVista" />
      <enabledValue>
        <decimal value="1" />
      </enabledValue>
      <disabledValue>
        <decimal value="0" />
      </disabledValue>
    </policy>
    <policy name="LogonHoursNotificationPolicyDescription" class="User" displayName="$(string.LogonHoursNotificationPolicyDescription)" explainText="$(string.LogonHoursNotificationPolicyDescription_Help)" key="Software\Microsoft\Windows\CurrentVersion\Policies\System" valueName="DontDisplayLogonHoursWarnings">
      <parentCategory ref="Logon" />
      <supportedOn ref="windows:SUPPORTED_WindowsVista" />
      <enabledValue>
        <decimal value="1" />
      </enabledValue>
      <disabledValue>
        <decimal value="0" />
      </disabledValue>
    </policy>
    <policy name="LogonHoursPolicyDescription" class="User" displayName="$(string.LogonHoursPolicyDescription)" explainText="$(string.LogonHoursPolicyDescription_Help)" presentation="$(presentation.LogonHoursPolicyDescription)" key="Software\Microsoft\Windows\CurrentVersion\Policies\System">
      <parentCategory ref="Logon" />
      <supportedOn ref="windows:SUPPORTED_WindowsVista" />
      <elements>
        <enum id="LogonHoursPolicyDescription" valueName="LogonHoursAction">
          <item displayName="$(string.LogonHoursAction_Lock)">
            <value>
              <decimal value="1" />
            </value>
          </item>
          <item displayName="$(string.LogonHoursAction_Disconnect)">
            <value>
              <decimal value="2" />
            </value>
          </item>
          <item displayName="$(string.LogonHoursAction_Logoff)">
            <value>
              <decimal value="3" />
            </value>
          </item>
        </enum>
      </elements>
    </policy>

</policies>
</policyDefinitions>

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