Prevent using Localhost IP address for WebRTC

Computer and userNative Intune settingHideLocalHostIPAddress

Supported on Microsoft Edge on Windows 10, Version 1511 or later

25H2 · 1.0

What it does

This policy setting lets you decide whether an employee's LocalHost IP address shows while making calls using the WebRTC protocol. If you enable this setting, LocalHost IP addresses are hidden while making calls using the WebRTC protocol. If you disable or don't configure this setting, LocalHost IP addresses are shown while making calls using the WebRTC protocol.

What it writes

Hive: HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER
Registry key: Software\Policies\Microsoft\MicrosoftEdge\Main
Value name: HideLocalHostIP
When enabled: DWORD 1
When disabled: DWORD 0

In Intune

Native Intune setting: Yes — Policy CSP

./Device/Vendor/MSFT/Policy/Config/Browser/PreventUsingLocalHostIPAddressForWebRTCBrowser on Microsoft LearnWindows builds listed: 10.0.10586.
./User/Vendor/MSFT/Policy/Config/Browser/PreventUsingLocalHostIPAddressForWebRTCBrowser on Microsoft LearnWindows builds listed: 10.0.10586.

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

Configure and deploy

Choose a state; 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\MicrosoftEdge\Main]
"HideLocalHostIP"=dword:00000001

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: Prevent using Localhost IP address for WebRTC
# Name: HideLocalHostIPAddress
# Scope: Machine
# State: Enabled
# Source: MicrosoftEdge.admx

Set-RegistryValue -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\MicrosoftEdge\Main' -Name 'HideLocalHostIP' -PropertyType 'DWord' -Value 1

These deployment candidates come from the ADMX template; they are separate from the native CSP mapping above.

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_MicrosoftEdge/HideLocalHostIPAddress

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_MicrosoftEdge/HideLocalHostIPAddress</LocURI>
        </Target>
        <Data>&lt;enabled/&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: Prevent using Localhost IP address for WebRTC
# Name: HideLocalHostIPAddress
# Scope: Machine
# State: Enabled
# Source: MicrosoftEdge.admx

$isMatch = Test-RegistryValueEquals -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\MicrosoftEdge\Main' -Name 'HideLocalHostIP' -Kind 'DWord' -Expected 1
if (-not $isMatch) {
    $reasons.Add('Value mismatch: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\MicrosoftEdge\Main\HideLocalHostIP') | 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: Prevent using Localhost IP address for WebRTC
# Name: HideLocalHostIPAddress
# Scope: Machine
# State: Enabled
# Source: MicrosoftEdge.admx

Set-RegistryValue -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\MicrosoftEdge\Main' -Name 'HideLocalHostIP' -PropertyType 'DWord' -Value 1

History 5 retained releases

22H2 · 1.015 Jul 2024
- Already present in the first release ChangeIntel keeps.

4 later releases left it unchanged.

Template

Internal name: HideLocalHostIPAddress
Namespace: Microsoft.Policies.MicrosoftEdge
Template file: MicrosoftEdge.admx
Release: Windows 11 25H2 · 1.0 · file set de4e49983ebd651f…

Definition, editor controls and support

Definition

<policy class="Both" displayName="$(string.HideLocalHostIPAddress)" explainText="$(string.HideLocalHostIPAddress_Explain)" key="Software\Policies\Microsoft\MicrosoftEdge\Main" name="HideLocalHostIPAddress" valueName="HideLocalHostIP" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.MicrosoftEdge:MicrosoftEdge" />
      <supportedOn ref="Microsoft.Policies.MicrosoftEdge:SUPPORTED_INTERNET_BROWSER_WIN10V1511" />
      <enabledValue>
        <decimal value="1" />
      </enabledValue>
      <disabledValue>
        <decimal value="0" />
      </disabledValue>
    </policy>

Editor controls

Supported platforms and category

Microsoft.Policies.MicrosoftEdge:category:MicrosoftEdge
<category displayName="$(string.InternetBrowser_DisplayName)" explainText="$(string.InternetBrowser_ExplainCat)" name="MicrosoftEdge" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.Windows:WindowsComponents" />
    </category>
Microsoft.Policies.MicrosoftEdge:definition:SUPPORTED_INTERNET_BROWSER_WIN10V1511
<definition displayName="$(string.SUPPORTED_INTERNET_BROWSER_WIN10V1511_DisplayName)" name="SUPPORTED_INTERNET_BROWSER_WIN10V1511" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
        <or>
          <range maxVersionIndex="1" minVersionIndex="1" ref="unresolved(products):MicrosoftEdge" />
        </or>
      </definition>
Microsoft.Policies.MicrosoftEdge:unresolved:unresolved(products):MicrosoftEdge
<unresolved reference="unresolved(products):MicrosoftEdge" />
Microsoft.Policies.Windows:category:WindowsComponents
<category displayName="$(string.WindowsComponents)" explainText="$(string.WindowsComponents_Help)" name="WindowsComponents" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions" />
Microsoft.Policies.MicrosoftEdge:category:MicrosoftEdge
<category displayName="$(string.InternetBrowser_DisplayName)" explainText="$(string.InternetBrowser_ExplainCat)" name="MicrosoftEdge" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.Windows:WindowsComponents" />
    </category>
<strings><string id="Microsoft.Policies.MicrosoftEdge:InternetBrowser_DisplayName">Microsoft Edge</string><string id="Microsoft.Policies.MicrosoftEdge:InternetBrowser_ExplainCat">Microsoft Edge Category</string></strings>
Microsoft.Policies.MicrosoftEdge:definition:SUPPORTED_INTERNET_BROWSER_WIN10V1511
<definition displayName="$(string.SUPPORTED_INTERNET_BROWSER_WIN10V1511_DisplayName)" name="SUPPORTED_INTERNET_BROWSER_WIN10V1511" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
        <or>
          <range maxVersionIndex="1" minVersionIndex="1" ref="unresolved(products):MicrosoftEdge" />
        </or>
      </definition>
<strings><string id="Microsoft.Policies.MicrosoftEdge:SUPPORTED_INTERNET_BROWSER_WIN10V1511_DisplayName">Microsoft Edge on Windows 10, Version 1511 or later</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>