Windows Components › Internet Explorer › Internet Control Panel › Security Page › Locked-Down Intranet Zone

Allow scripting of Internet Explorer WebBrowser controls

Computer and userIntune-readyIZ_Policy_WebBrowserControl_4

Supported on At least Internet Explorer 7.0

22H2 · 1.0

What it does

This policy setting determines whether a page can control embedded WebBrowser controls via script. If you enable this policy setting, script access to the WebBrowser control is allowed. If you disable this policy setting, script access to the WebBrowser control is not allowed. If you do not configure this policy setting, the user can enable or disable script access to the WebBrowser control. By default, script access to the WebBrowser control is allowed only in the Local Machine and Intranet zones.

What it writes

Hive: HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER
Registry key: Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\1

In Intune

No native CSP; import the ADMX (Intune-ready).

From Microsoft's Policy CSP DDF files (DDF v2 Files, February 2026), read 18 Oct 2026.

Options

Option	Type	Registry value	Allowed values
Internet Explorer web browser controlRequiredDefault: Enable	Drop-down list	`1206`	Enable`0` Disable`3`

Configure and deploy

Choose a state and the option values; the output below is generated from the template for exactly that.

Enabled · Computer · template defaults

Registry file (.reg)

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\1]
"1206"=dword:00000000

PowerShell

$ErrorActionPreference = 'Stop'

function Set-RegistryValue {
    param(
        [Parameter(Mandatory = $true)][string] $Path,
        [Parameter(Mandatory = $true)][string] $Name,
        [Parameter(Mandatory = $true)][string] $PropertyType,
        [Parameter(Mandatory = $true)][object] $Value
    )

    if (-not (Test-Path -LiteralPath $Path)) {
        New-Item -Path $Path -Force | Out-Null
    }

    New-ItemProperty -LiteralPath $Path -Name $Name -PropertyType $PropertyType -Value $Value -Force | Out-Null
}

function Remove-RegistryValue {
    param(
        [Parameter(Mandatory = $true)][string] $Path,
        [Parameter(Mandatory = $true)][string] $Name
    )

    if (Test-Path -LiteralPath $Path) {
        Remove-ItemProperty -LiteralPath $Path -Name $Name -Force -ErrorAction SilentlyContinue
    }
}

function Clear-RegistryKeyValues {
    param(
        [Parameter(Mandatory = $true)][string] $Path
    )

    if (-not (Test-Path -LiteralPath $Path)) {
        return
    }

    foreach ($propertyName in (Get-Item -LiteralPath $Path).Property) {
        Remove-ItemProperty -LiteralPath $Path -Name $propertyName -Force -ErrorAction SilentlyContinue
    }
}

# Policy: Allow scripting of Internet Explorer WebBrowser controls
# Name: IZ_Policy_WebBrowserControl_4
# Scope: Machine
# State: Enabled
# Source: inetres.admx

Set-RegistryValue -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\1' -Name '1206' -PropertyType 'DWord' -Value 0

The OMA-URI is an inferred ADMX-backed Policy CSP candidate derived from the source ADMX file name and policy name.
Some Microsoft policies use built-in Policy CSP pages whose area names don't match the ADMX file name, so verify the candidate against Microsoft Learn before deployment.

ADMX profile candidate (OMA-URI)

./Device/Vendor/MSFT/Policy/Config/ADMX_inetres/IZ_Policy_WebBrowserControl_4

ADMX SyncML candidate

<SyncML xmlns="SYNCML:SYNCML1.2">
  <SyncBody>
    <Replace>
      <CmdID>1</CmdID>
      <Item>
        <Meta>
          <Format>chr</Format>
          <Type>text/plain</Type>
        </Meta>
        <Target>
          <LocURI>./Device/Vendor/MSFT/Policy/Config/ADMX_inetres/IZ_Policy_WebBrowserControl_4</LocURI>
        </Target>
        <Data>&lt;enabled/&gt;
&lt;data id="IZ_Partname1206" value="0"/&gt;</Data>
      </Item>
    </Replace>
    <Final/>
  </SyncBody>
</SyncML>

Intune remediation scripts

Detection

$ErrorActionPreference = 'Stop'
$reasons = [System.Collections.Generic.List[string]]::new()

function Test-RegistryValueExists {
    param(
        [Parameter(Mandatory = $true)][string] $Path,
        [Parameter(Mandatory = $true)][string] $Name
    )

    if (-not (Test-Path -LiteralPath $Path)) {
        return $false
    }

    return $null -ne (Get-ItemProperty -LiteralPath $Path -Name $Name -ErrorAction SilentlyContinue)
}

function Test-RegistryValueEquals {
    param(
        [Parameter(Mandatory = $true)][string] $Path,
        [Parameter(Mandatory = $true)][string] $Name,
        [Parameter(Mandatory = $true)][string] $Kind,
        [Parameter(Mandatory = $true)][object] $Expected
    )

    if (-not (Test-Path -LiteralPath $Path)) {
        return $false
    }

    $valueObject = Get-ItemProperty -LiteralPath $Path -Name $Name -ErrorAction SilentlyContinue
    if ($null -eq $valueObject) {
        return $false
    }

    $actual = $valueObject.$Name
    switch ($Kind) {
        'String' { return [string]$actual -ceq [string]$Expected }
        'ExpandString' { return [string]$actual -ceq [string]$Expected }
        'DWord' { return [uint32]$actual -eq [uint32]$Expected }
        'QWord' { return [uint64]$actual -eq [uint64]$Expected }
        'MultiString' {
            $actualArray = @($actual)
            $expectedArray = @($Expected)
            if ($actualArray.Count -ne $expectedArray.Count) { return $false }
            for ($index = 0; $index -lt $actualArray.Count; $index++) {
                if ([string]$actualArray[$index] -cne [string]$expectedArray[$index]) { return $false }
            }
            return $true
        }
        'Binary' {
            $actualArray = [byte[]]$actual
            $expectedArray = [byte[]]$Expected
            if ($actualArray.Length -ne $expectedArray.Length) { return $false }
            for ($index = 0; $index -lt $actualArray.Length; $index++) {
                if ($actualArray[$index] -ne $expectedArray[$index]) { return $false }
            }
            return $true
        }
        default { return [string]$actual -ceq [string]$Expected }
    }
}

# Policy: Allow scripting of Internet Explorer WebBrowser controls
# Name: IZ_Policy_WebBrowserControl_4
# Scope: Machine
# State: Enabled
# Source: inetres.admx

$isMatch = Test-RegistryValueEquals -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\1' -Name '1206' -Kind 'DWord' -Expected 0
if (-not $isMatch) {
    $reasons.Add('Value mismatch: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\1\1206') | Out-Null
}

if ($reasons.Count -eq 0) {
    Write-Output 'Compliant'
    exit 0
}

$reasons | ForEach-Object { Write-Output $_ }
exit 1

Remediation

$ErrorActionPreference = 'Stop'

function Set-RegistryValue {
    param(
        [Parameter(Mandatory = $true)][string] $Path,
        [Parameter(Mandatory = $true)][string] $Name,
        [Parameter(Mandatory = $true)][string] $PropertyType,
        [Parameter(Mandatory = $true)][object] $Value
    )

    if (-not (Test-Path -LiteralPath $Path)) {
        New-Item -Path $Path -Force | Out-Null
    }

    New-ItemProperty -LiteralPath $Path -Name $Name -PropertyType $PropertyType -Value $Value -Force | Out-Null
}

function Remove-RegistryValue {
    param(
        [Parameter(Mandatory = $true)][string] $Path,
        [Parameter(Mandatory = $true)][string] $Name
    )

    if (Test-Path -LiteralPath $Path) {
        Remove-ItemProperty -LiteralPath $Path -Name $Name -Force -ErrorAction SilentlyContinue
    }
}

function Clear-RegistryKeyValues {
    param(
        [Parameter(Mandatory = $true)][string] $Path
    )

    if (-not (Test-Path -LiteralPath $Path)) {
        return
    }

    foreach ($propertyName in (Get-Item -LiteralPath $Path).Property) {
        Remove-ItemProperty -LiteralPath $Path -Name $propertyName -Force -ErrorAction SilentlyContinue
    }
}

# Policy: Allow scripting of Internet Explorer WebBrowser controls
# Name: IZ_Policy_WebBrowserControl_4
# Scope: Machine
# State: Enabled
# Source: inetres.admx

Set-RegistryValue -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\1' -Name '1206' -PropertyType 'DWord' -Value 0

History 2 retained releases

22H2 · 1.015 Jul 2024
- Translations changed; choose a language above to compare its wording.
1607 · 2.015 Jul 2024
- Already present in the first release ChangeIntel keeps.

Template

Internal name: IZ_Policy_WebBrowserControl_4
Namespace: Microsoft.Policies.InternetExplorer
Template file: inetres.admx
Release: Windows 10 22H2 · 1.0 · file set bc15f6a5271783ee…

Definition, editor controls and support

Definition

<policy class="Both" displayName="$(string.IZ_Policy_WebBrowserControl)" explainText="$(string.IZ_Policy_WebBrowserControl_Explain)" key="Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\1" name="IZ_Policy_WebBrowserControl_4" presentation="$(presentation.IZ_Policy_WebBrowserControl_1)" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.InternetExplorer:IZ_IntranetZoneLockdown" />
      <supportedOn ref="Microsoft.Policies.InternetExplorer:SUPPORTED_IE7" />
      <elements>
        <enum id="IZ_Partname1206" required="true" valueName="1206">
          <item displayName="$(string.IZ_ItemnameEnable)">
            <value>
              <decimal value="0" />
            </value>
          </item>
          <item displayName="$(string.IZ_ItemnameDisable)">
            <value>
              <decimal value="3" />
            </value>
          </item>
        </enum>
      </elements>
    </policy>

Editor controls

<presentation id="IZ_Policy_WebBrowserControl_1" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
        <dropdownList defaultItem="0" noSort="true" refId="IZ_Partname1206">Internet Explorer web browser control</dropdownList>
      </presentation>

Supported platforms and category

Microsoft.Policies.InternetExplorer:category:IZ_IntranetZoneLockdown
<category displayName="$(string.IZ_IntranetZoneLockdown)" explainText="$(string.IZ_IntranetZoneLockdown_Explain)" name="IZ_IntranetZoneLockdown" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.InternetExplorer:IZ_SecurityPage" />
    </category>
Microsoft.Policies.InternetExplorer:category:IZ_SecurityPage
<category displayName="$(string.IZ_SecurityPage)" explainText="$(string.IZ_SecurityPageExplain)" name="IZ_SecurityPage" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.InternetExplorer:InternetCPL" />
    </category>
Microsoft.Policies.InternetExplorer:category:InternetCPL
<category displayName="$(string.InternetCPL)" explainText="$(string.IE_ExplainInternetCPLCategory)" name="InternetCPL" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.InternetExplorer:InternetExplorer" />
    </category>
Microsoft.Policies.InternetExplorer:category:InternetExplorer
<category displayName="$(string.InternetExplorer)" explainText="$(string.IE_ExplainCat)" name="InternetExplorer" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.Windows:WindowsComponents" />
    </category>
Microsoft.Policies.InternetExplorer:definition:SUPPORTED_IE7
<definition displayName="$(string.SUPPORTED_IE7)" name="SUPPORTED_IE7" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
        <or>
          <range minVersionIndex="7" ref="Microsoft.Policies.Products:InternetExplorer" />
        </or>
      </definition>
Microsoft.Policies.Products:product:InternetExplorer
sha256:f287ee590cbba46b7a95511866303967b9370c7c7d81185659d675ca19b05d72
Microsoft.Policies.Windows:category:WindowsComponents
<category displayName="$(string.WindowsComponents)" explainText="$(string.WindowsComponents_Help)" name="WindowsComponents" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions" />
Microsoft.Policies.InternetExplorer:category:IZ_IntranetZoneLockdown
<category displayName="$(string.IZ_IntranetZoneLockdown)" explainText="$(string.IZ_IntranetZoneLockdown_Explain)" name="IZ_IntranetZoneLockdown" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.InternetExplorer:IZ_SecurityPage" />
    </category>
<strings><string id="Microsoft.Policies.InternetExplorer:IZ_IntranetZoneLockdown">Locked-Down Intranet Zone</string><string id="Microsoft.Policies.InternetExplorer:IZ_IntranetZoneLockdown_Explain">The settings in this zone apply only if the Intranet Zone is in 'lockdown' mode, such as when the Network Protocol Lockdown security feature is in effect. If the zone is locked down, these URL action settings do not override the standard Intranet Zone settings, but are compared against them. If the settings for that URL action in the two zones are the same, then that setting is used. Otherwise, the user is presented with a Notification bar, and may allow the zone to operate with the standard (non-lockdown) zone's setting.</string></strings>
Microsoft.Policies.InternetExplorer:category:IZ_SecurityPage
<category displayName="$(string.IZ_SecurityPage)" explainText="$(string.IZ_SecurityPageExplain)" name="IZ_SecurityPage" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.InternetExplorer:InternetCPL" />
    </category>
<strings><string id="Microsoft.Policies.InternetExplorer:IZ_SecurityPage">Security Page</string><string id="Microsoft.Policies.InternetExplorer:IZ_SecurityPageExplain">If you enable any policies for the security page, it is strongly recommended that you also configure policy to disable the security page from being presented in the UI to prevent users from believing that they can change their security settings.

You can disable the security page using the policy located at Administrative Templates\Windows Components\Internet Explorer\Internet Control Panel\.</string></strings>
Microsoft.Policies.InternetExplorer:category:InternetCPL
<category displayName="$(string.InternetCPL)" explainText="$(string.IE_ExplainInternetCPLCategory)" name="InternetCPL" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.InternetExplorer:InternetExplorer" />
    </category>
<strings><string id="Microsoft.Policies.InternetExplorer:IE_ExplainInternetCPLCategory">Contains settings that control features found in the Internet Options dialog.</string><string id="Microsoft.Policies.InternetExplorer:InternetCPL">Internet Control Panel</string></strings>
Microsoft.Policies.InternetExplorer:category:InternetExplorer
<category displayName="$(string.InternetExplorer)" explainText="$(string.IE_ExplainCat)" name="InternetExplorer" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.Windows:WindowsComponents" />
    </category>
<strings><string id="Microsoft.Policies.InternetExplorer:IE_ExplainCat">Contains settings to configure Internet Explorer</string><string id="Microsoft.Policies.InternetExplorer:InternetExplorer">Internet Explorer</string></strings>
Microsoft.Policies.InternetExplorer:definition:SUPPORTED_IE7
<definition displayName="$(string.SUPPORTED_IE7)" name="SUPPORTED_IE7" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
        <or>
          <range minVersionIndex="7" ref="Microsoft.Policies.Products:InternetExplorer" />
        </or>
      </definition>
<strings><string id="Microsoft.Policies.InternetExplorer:SUPPORTED_IE7">At least Internet Explorer 7.0</string></strings>
Microsoft.Policies.Products:product:InternetExplorer
<product displayName="$(string.InternetExplorer)" name="InternetExplorer" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
        <majorVersion displayName="$(string.InternetExplorer30)" name="InternetExplorer30" versionIndex="3" />
        <majorVersion displayName="$(string.InternetExplorer40)" name="InternetExplorer40" versionIndex="4" />
        <majorVersion displayName="$(string.InternetExplorer50)" name="InternetExplorer50" versionIndex="5" />
        <majorVersion displayName="$(string.InternetExplorer60)" name="InternetExplorer60" versionIndex="6" />
        <majorVersion displayName="$(string.InternetExplorer70)" name="InternetExplorer70" versionIndex="7" />
        <majorVersion displayName="$(string.InternetExplorer80)" name="InternetExplorer80" versionIndex="8" />
        <majorVersion displayName="$(string.InternetExplorer90)" name="InternetExplorer90" versionIndex="9" />
        <majorVersion displayName="$(string.InternetExplorer100)" name="InternetExplorer100" versionIndex="10" />
        <majorVersion displayName="$(string.InternetExplorer110)" name="InternetExplorer110" versionIndex="11" />
      </product>
<strings><string id="Microsoft.Policies.Products:InternetExplorer">Internet Explorer</string><string id="Microsoft.Policies.Products:InternetExplorer100">Internet Explorer 10</string><string id="Microsoft.Policies.Products:InternetExplorer110">Internet Explorer 11</string><string id="Microsoft.Policies.Products:InternetExplorer30">Internet Explorer 3</string><string id="Microsoft.Policies.Products:InternetExplorer40">Internet Explorer 4</string><string id="Microsoft.Policies.Products:InternetExplorer50">Internet Explorer 5</string><string id="Microsoft.Policies.Products:InternetExplorer60">Internet Explorer 6</string><string id="Microsoft.Policies.Products:InternetExplorer70">Internet Explorer 7</string><string id="Microsoft.Policies.Products:InternetExplorer80">Internet Explorer 8</string><string id="Microsoft.Policies.Products:InternetExplorer90">Internet Explorer 9</string></strings>
Microsoft.Policies.Windows:category:WindowsComponents
<category displayName="$(string.WindowsComponents)" explainText="$(string.WindowsComponents_Help)" name="WindowsComponents" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions" />
<strings><string id="Microsoft.Policies.Windows:WindowsComponents">Windows Components</string><string id="Microsoft.Policies.Windows:WindowsComponents_Help">Contains settings for operating system components.</string></strings>