Edit C:\Windows\PolicyDefinitions\WPN.admx

Edit C:\Windows\PolicyDefinitions\WPN.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="startmenu" namespace="Microsoft.Policies.Notifications" />
    <using prefix="windows" namespace="Microsoft.Policies.Windows" />
  </policyNamespaces>
  <resources minRequiredRevision="1.0" />
  <categories>
    <category name="NotificationsCategory" displayName="$(string.NotificationsCategory)">
      <parentCategory ref="windows:StartMenu" />
    </category>
  </categories>
  <policies>
    <policy name="NoTileNotification" class="User" displayName="$(string.NoTileNotification)" explainText="$(string.NoTileNotificationExplain)"  key="SOFTWARE\Policies\Microsoft\Windows\CurrentVersion\PushNotifications" valueName="NoTileApplicationNotification">
      <parentCategory ref="NotificationsCategory" />
      <supportedOn ref="windows:SUPPORTED_Windows8" />
      <enabledValue>
            <decimal value="1" />
      </enabledValue>
      <disabledValue>
            <decimal value="0" />
      </disabledValue>
    </policy>

<policy name="NoToastNotification" class="User" displayName="$(string.NoToastNotification)" explainText="$(string.NoToastNotificationExplain)"  key="SOFTWARE\Policies\Microsoft\Windows\CurrentVersion\PushNotifications" valueName="NoToastApplicationNotification">
      <parentCategory ref="NotificationsCategory" />
      <supportedOn ref="windows:SUPPORTED_Windows8" />
      <enabledValue>
        <decimal value="1" />
      </enabledValue>
      <disabledValue>
        <decimal value="0" />
      </disabledValue>
    </policy>

<policy name="NoLockScreenToastNotification" class="User" displayName="$(string.NoLockScreenToastNotification)" explainText="$(string.NoLockScreenToastNotificationExplain)"  key="SOFTWARE\Policies\Microsoft\Windows\CurrentVersion\PushNotifications" valueName="NoToastApplicationNotificationOnLockScreen">
      <parentCategory ref="NotificationsCategory" />
      <supportedOn ref="windows:SUPPORTED_Windows8" />
      <enabledValue>
        <decimal value="1" />
      </enabledValue>
      <disabledValue>
        <decimal value="0" />
      </disabledValue>
    </policy>

<policy name="NoCloudNotification" class="User" displayName="$(string.NoCloudNotification)" explainText="$(string.NoCloudNotificationExplain)"  key="SOFTWARE\Policies\Microsoft\Windows\CurrentVersion\PushNotifications" valueName="NoCloudApplicationNotification">
      <parentCategory ref="NotificationsCategory" />
      <supportedOn ref="windows:SUPPORTED_Windows8" />
      <enabledValue>
        <decimal value="1" />
      </enabledValue>
      <disabledValue>
        <decimal value="0" />
      </disabledValue>
    </policy>

<policy name="NoQuietHours" class="User" displayName="$(string.NoQuietHours)" explainText="$(string.NoQuietHoursExplain)" key="SOFTWARE\Policies\Microsoft\Windows\CurrentVersion\QuietHours" valueName="Enable">
      <parentCategory ref="NotificationsCategory" />
      <supportedOn ref="windows:SUPPORTED_Windows_6_3" />
        <enabledValue>
          <decimal value="0" />
        </enabledValue>
        <disabledValue>
          <decimal value="1" />
        </disabledValue>
    </policy>

<policy name="QuietHoursDailyBeginMinute" class="User" displayName="$(string.QuietHoursDailyBeginMinute)" explainText="$(string.QuietHoursDailyBeginMinuteExplain)" presentation="$(presentation.QuietHoursBeginTimePicker)" key="SOFTWARE\Policies\Microsoft\Windows\CurrentVersion\QuietHours">
      <parentCategory ref="NotificationsCategory" />
      <supportedOn ref="windows:SUPPORTED_Windows_6_3" />
      <elements>
        <decimal id="QuietHoursDailyBeginMinuteControl" valueName="EntryTime" minValue="0" maxValue="1439" />
      </elements>
    </policy>

<policy name="QuietHoursDailyEndMinute" class="User" displayName="$(string.QuietHoursDailyEndMinute)" explainText="$(string.QuietHoursDailyEndMinuteExplain)" presentation="$(presentation.QuietHoursEndTimePicker)" key="SOFTWARE\Policies\Microsoft\Windows\CurrentVersion\QuietHours">
      <parentCategory ref="NotificationsCategory" />
      <supportedOn ref="windows:SUPPORTED_Windows_6_3" />
      <elements>
        <decimal id="QuietHoursDailyEndMinuteControl" valueName="ExitTime" minValue="0" maxValue="1439" />
      </elements>
    </policy>

<policy name="NoCallsDuringQuietHours" class="User" displayName="$(string.NoCallsDuringQuietHours)" explainText="$(string.NoCallsDuringQuietHoursExplain)" key="SOFTWARE\Policies\Microsoft\Windows\CurrentVersion\QuietHours" valueName="AllowCalls">
      <parentCategory ref="NotificationsCategory" />
      <supportedOn ref="windows:SUPPORTED_Windows_6_3" />
      <enabledValue>
        <decimal value="0" />
      </enabledValue>
      <disabledValue>
        <decimal value="1" />
      </disabledValue>
    </policy>
  </policies>
</policyDefinitions>

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