Edit C:\Windows\PolicyDefinitions\ActiveXInstallService.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="AxInstSv" namespace="Microsoft.Policies.ActiveXInstallService" />
    <using prefix="windows" namespace="Microsoft.Policies.Windows" />
  </policyNamespaces>
  <resources minRequiredRevision="1.0" />
  <categories>
    <category name="AxInstSv" displayName="$(string.AxInstSv)">
      <parentCategory ref="windows:WindowsComponents" />  
    </category>
</categories>
  <policies>
    <policy name="ApprovedActiveXInstallSites" class="Machine" displayName="$(string.ApprovedActiveXInstallSites)" explainText="$(string.ApprovedActiveXInstallSites_explain)" presentation="$(presentation.ApprovedActiveXInstallSites)" key="SOFTWARE\Policies\Microsoft\Windows\AxInstaller" valueName="ApprovedList">
      <parentCategory ref="AxInstSv" />
      <supportedOn ref="windows:SUPPORTED_WindowsVista" />
      <enabledValue>
        <decimal value="1" />
      </enabledValue>
      <disabledValue>
        <decimal value="0" />
      </disabledValue>
      <elements>
        <list id="ApprovedActiveXInstallSiteslist" key="SOFTWARE\Policies\Microsoft\Windows\AxInstaller\ApprovedActiveXInstallSites" additive="true" explicitValue="true" />
      </elements>
    </policy>
    <policy name="AxISURLZonePolicies" class="Machine" displayName="$(string.AxISURLZonePolicies)" explainText="$(string.AxISURLZonePolicies_explain)" presentation="$(presentation.AxISURLZonePolicies)" key="SOFTWARE\Policies\Microsoft\Windows\AxInstaller\AxISURLZonePolicies">
      <parentCategory ref="AxInstSv" />
      <supportedOn ref="windows:SUPPORTED_WindowsVista" />
      <elements>
        <enum id="InstallTrustedOCX" valueName="InstallTrustedOCX" required="true">
          <item displayName="$(string.TrustedZoneDisabled)">
            <value>
              <decimal value="0" />
            </value>
          </item>
          <item displayName="$(string.TrustedZonePrompt)">
            <value>
              <decimal value="1" />
            </value>
          </item>
          <item displayName="$(string.TrustedZoneSilentInstall)">
            <value>
              <decimal value="2" />
            </value>
          </item>
        </enum>
        <enum id="InstallSignedOCX" valueName="InstallSignedOCX" required="true">
          <item displayName="$(string.TrustedZoneDisabled)">
            <value>
              <decimal value="0" />
            </value>
          </item>
          <item displayName="$(string.TrustedZonePrompt)">
            <value>
              <decimal value="1" />
            </value>
          </item>
          <item displayName="$(string.TrustedZoneSilentInstall)">
            <value>
              <decimal value="2" />
            </value>
          </item>
        </enum>
        <enum id="InstallUnSignedOCX" valueName="InstallUnSignedOCX" required="true">
          <item displayName="$(string.TrustedZoneDisabled)">
            <value>
              <decimal value="0" />
            </value>
          </item>
          <item displayName="$(string.TrustedZonePrompt)">
            <value>
              <decimal value="1" />
            </value>
          </item>
        </enum>
        <boolean id="IgnoreUnknownCA" valueName="IgnoreUnknownCA" required="false">
          <trueValue>
            <decimal value="1" />
          </trueValue>
          <falseValue>
            <decimal value="0" />
          </falseValue>
        </boolean>
        <boolean id="IgnoreInvalidCN" valueName="IgnoreInvalidCN" required="false">
          <trueValue>
            <decimal value="1" />
          </trueValue>
          <falseValue>
            <decimal value="0" />
          </falseValue>
        </boolean>
        <boolean id="IgnoreInvalidCertDate" valueName="IgnoreInvalidCertDate" required="false">
          <trueValue>
            <decimal value="1" />
          </trueValue>
          <falseValue>
            <decimal value="0" />
          </falseValue>
        </boolean>
        <boolean id="IgnoreWrongCertUsage" valueName="IgnoreWrongCertUsage" required="false">
          <trueValue>
            <decimal value="1" />
          </trueValue>
          <falseValue>
            <decimal value="0" />
          </falseValue>
        </boolean>
      </elements>
    </policy>
  </policies>
</policyDefinitions>

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