Microsoft Edge WebView2

HTTP Allowlist

Computer and userIntune-readyHttpAllowlist

Supported on Microsoft Edge version 123, Windows 7 or later

156.0.4314.70

Shown as of 156.0.4314.70, 5 Nov 2026. See it in the latest templates.

What it does

Setting the policy specifies a list of hostnames or hostname patterns (such as '[*.]example.com') that won't be upgraded to HTTPS. Organizations can use this policy to maintain access to servers that don't support HTTPS, without needing to disable "HttpsUpgradesEnabled". Supplied hostnames must be canonicalized: Any IDNs must be converted to their A-label format, and all ASCII letters must be lowercase. Blanket host wildcards (that is, "*" or "[*]") aren't allowed. Instead, HTTPS-First Mode and HTTPS Upgrades should be explicitly disabled via their specific policies. Note: This policy doesn't apply to HSTS upgrades. Example value: testserver.example.com [*.]example.org

What it writes

Hive: HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER
Registry key: Software\Policies\Microsoft\Edge\WebView2

Options

Option	Type	Registry value	Allowed values
HTTP Allowlist	List of values (list)	`Software\Policies\Microsoft\Edge\WebView2\HttpAllowlist`	Name and value pairs

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\Edge\WebView2\HttpAllowlist]

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: HTTP Allowlist
# Name: HttpAllowlist
# Scope: Machine
# State: Enabled
# Source: msedgewebview2.admx

Clear-RegistryKeyValues -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Edge\WebView2\HttpAllowlist'

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.
The generated payload is incomplete because one or more ADMX element values were not supplied: HttpAllowlistDesc

ADMX profile candidate (OMA-URI)

./Device/Vendor/MSFT/Policy/Config/ADMX_msedgewebview2/HttpAllowlist

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' {
            $actualBits = if ($actual -is [uint64]) { $actual } else { [BitConverter]::ToUInt64([BitConverter]::GetBytes([int64]$actual), 0) }
            $expectedBits = if ($Expected -is [uint64]) { $Expected } else { [BitConverter]::ToUInt64([BitConverter]::GetBytes([int64]$Expected), 0) }
            return $actualBits -eq $expectedBits
        }
        '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: HTTP Allowlist
# Name: HttpAllowlist
# Scope: Machine
# State: Enabled
# Source: msedgewebview2.admx

$keyPath = 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Edge\WebView2\HttpAllowlist'
if (Test-Path -LiteralPath $keyPath) {
    $propertyNames = (Get-Item -LiteralPath $keyPath).Property
    if ($propertyNames.Count -gt 0) {
        $reasons.Add('Key should be empty: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Edge\WebView2\HttpAllowlist') | 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: HTTP Allowlist
# Name: HttpAllowlist
# Scope: Machine
# State: Enabled
# Source: msedgewebview2.admx

Clear-RegistryKeyValues -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Edge\WebView2\HttpAllowlist'

History 47 retained releases

150.0.4078.8016 Jul 2026
- Already present in the first release ChangeIntel keeps.

46 later releases left it unchanged.

Template

Internal name: HttpAllowlist
Namespace: Microsoft.Policies.WebView2
Template file: msedgewebview2.admx
Release: Microsoft Edge 156.0.4314.70 · file set 8bc6f5e0332f656b…

Definition, editor controls and support

Definition

<policy class="Both" displayName="$(string.HttpAllowlist)" explainText="$(string.HttpAllowlist_Explain)" key="Software\Policies\Microsoft\Edge\WebView2" name="HttpAllowlist" presentation="$(presentation.HttpAllowlist)" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.WebView2:microsoft_edge_webview2" />
      <supportedOn ref="Microsoft.Policies.WebView2:SUPPORTED_WIN7_V123" />
      <elements>
        <list explicitValue="true" id="HttpAllowlistDesc" key="Software\Policies\Microsoft\Edge\WebView2\HttpAllowlist" />
      </elements>
    </policy>

Editor controls

<presentation id="HttpAllowlist" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions"><listBox refId="HttpAllowlistDesc">HTTP Allowlist</listBox></presentation>

Supported platforms and category

Microsoft.Policies.WebView2:category:microsoft_edge_webview2
<category displayName="$(string.microsoft_edge_webview2)" name="microsoft_edge_webview2" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions" />
Microsoft.Policies.WebView2:definition:SUPPORTED_WIN7_V123
<definition displayName="$(string.SUPPORTED_WIN7_V123)" name="SUPPORTED_WIN7_V123" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions" />
Microsoft.Policies.WebView2:category:microsoft_edge_webview2
<category displayName="$(string.microsoft_edge_webview2)" name="microsoft_edge_webview2" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions" />
<strings><string id="Microsoft.Policies.WebView2:microsoft_edge_webview2">Microsoft Edge WebView2</string></strings>
Microsoft.Policies.WebView2:definition:SUPPORTED_WIN7_V123
<definition displayName="$(string.SUPPORTED_WIN7_V123)" name="SUPPORTED_WIN7_V123" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions" />
<strings><string id="Microsoft.Policies.WebView2:SUPPORTED_WIN7_V123">Microsoft Edge version 123, Windows 7 or later</string></strings>