Windows Components › Microsoft Edge

Show message when opening sites in Internet Explorer

Computer and userNative Intune settingChanged in 22H2 · 1.0ShowMessageWhenOpeningSitesInInternetExplorer

Supported on Microsoft Edge on Windows 10, Version 1607 or later

22H2 · 1.0

What it does

You can configure Microsoft Edge to open a site automatically in Internet Explorer 11 and choose to display a notification before the site opens. If you want to display a notification, you must enable Configure the Enterprise Mode Site List or Send all intranets sites to Internet Explorer 11 or both. If enabled, the notification appears on a new page. If you want users to continue in Microsoft Edge, select the Show Keep going in Microsoft Edge option from the drop-down list under Options. If disabled or not configured, the default app behavior occurs and no additional page displays. Default setting: Disabled or not configured Related policies: -Configure the Enterprise Mode Site List -Send all intranet sites to Internet Explorer 11

What it writes

Hive: HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER
Registry key: Software\Policies\Microsoft\MicrosoftEdge\Main
Value name: ShowMessageWhenOpeningSitesInInternetExplorer

In Intune

Native Intune setting: Yes — Policy CSP

./Device/Vendor/MSFT/Policy/Config/Browser/ShowMessageWhenOpeningSitesInInternetExplorerBrowser on Microsoft LearnWindows builds listed: 10.0.14393.
./User/Vendor/MSFT/Policy/Config/Browser/ShowMessageWhenOpeningSitesInInternetExplorerBrowser on Microsoft LearnWindows builds listed: 10.0.14393.

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

Options

Option	Type	Registry value	Allowed values
Show Keep going in Microsoft Edge linkRequiredDefault: Hide Keep going in Microsoft Edge link	Drop-down list	`ShowMessageWhenOpeningSitesInInternetExplorer`	Hide Keep going in Microsoft Edge link`1` Show Keep going in Microsoft Edge link`2`

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\MicrosoftEdge\Main]
"ShowMessageWhenOpeningSitesInInternetExplorer"=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: Show message when opening sites in Internet Explorer
# Name: ShowMessageWhenOpeningSitesInInternetExplorer
# Scope: Machine
# State: Enabled
# Source: MicrosoftEdge.admx

Set-RegistryValue -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\MicrosoftEdge\Main' -Name 'ShowMessageWhenOpeningSitesInInternetExplorer' -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/ShowMessageWhenOpeningSitesInInternetExplorer

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/ShowMessageWhenOpeningSitesInInternetExplorer</LocURI>
        </Target>
        <Data>&lt;enabled/&gt;
&lt;data id="ShowMessageWhenOpeningSitesInInternetExplorer_Dropdown" value="1"/&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: Show message when opening sites in Internet Explorer
# Name: ShowMessageWhenOpeningSitesInInternetExplorer
# Scope: Machine
# State: Enabled
# Source: MicrosoftEdge.admx

$isMatch = Test-RegistryValueEquals -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\MicrosoftEdge\Main' -Name 'ShowMessageWhenOpeningSitesInInternetExplorer' -Kind 'DWord' -Expected 1
if (-not $isMatch) {
    $reasons.Add('Value mismatch: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\MicrosoftEdge\Main\ShowMessageWhenOpeningSitesInInternetExplorer') | 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: Show message when opening sites in Internet Explorer
# Name: ShowMessageWhenOpeningSitesInInternetExplorer
# Scope: Machine
# State: Enabled
# Source: MicrosoftEdge.admx

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

History 2 retained releases

22H2 · 1.015 Jul 2024
- Description ~~[removed: This policy setting lets you decide wh…]~~[added: You can configure Microsoft Edge to ope…] a [added: notification before the ]site ~~[removed: has been opened using]~~[added: opens. If you want to display a notification, you…] Internet Explorer ~~[removed: 11.]~~[added: 11 or both.] If ~~[removed: you enable this setting, employees see an additional page]~~[added: enabled, the notification appears on a new page. If you want users to continue] in Microsoft Edge, ~~[removed: stating that a site has been opened using Internet Explorer 11.]~~[added: select the Show Keep going in Microsoft Edge option from the drop-down list under Options.]…
  Whole description, marked
  ~~[removed: This policy setting lets you decide whether employees see an additional page in Microsoft Edge, stating that]~~[added: You can configure Microsoft Edge to open a site automatically in Internet Explorer 11 and choose to display] a [added: notification before the ]site ~~[removed: has been opened using]~~[added: opens. If you want to display a notification, you must enable Configure the Enterprise Mode Site List or Send all intranets sites to] Internet Explorer ~~[removed: 11.]~~[added: 11 or both.] If ~~[removed: you enable this setting, employees see an additional page]~~[added: enabled, the notification appears on a new page. If you want users to continue] in Microsoft Edge, ~~[removed: stating that a site has been opened using Internet Explorer 11.]~~[added: select the Show Keep going in Microsoft Edge option from the drop-down list under Options.] If ~~[removed: you disable ]~~[added: disabled ]or ~~[removed: don't configure this setting, ]~~[added: not configured, ]the default app behavior occurs and no additional page ~~[removed: appears.]~~[added: displays. Default setting: Disabled or not configured Related policies: -Configure the Enterprise Mode Site List -Send all intranet sites to Internet Explorer 11]
- Enabled no longer writes ~~[removed: DWORD 1]~~
- Disabled no longer writes ~~[removed: DWORD 0]~~
- Option removed ~~[removed: ShowMessageWhenOpeningSitesInInternetExplorer]~~
- New option [added: Show Keep going in Microsoft Edge link (ShowMessageWhenOpeningSitesInInternetExplorer_Dropdown)]
- Editor controls or their defaults changed.
1607 · 2.015 Jul 2024
- Already present in the first release ChangeIntel keeps.

Template

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

Definition, editor controls and support

Definition

<policy class="Both" displayName="$(string.ShowMessageWhenOpeningSitesInInternetExplorer)" explainText="$(string.ShowMessageWhenOpeningSitesInInternetExplorer_Explain)" key="Software\Policies\Microsoft\MicrosoftEdge\Main" name="ShowMessageWhenOpeningSitesInInternetExplorer" presentation="$(presentation.ShowMessageWhenOpeningSitesInInternetExplorer_Presentation)" valueName="ShowMessageWhenOpeningSitesInInternetExplorer" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.MicrosoftEdge:MicrosoftEdge" />
      <supportedOn ref="Microsoft.Policies.MicrosoftEdge:SUPPORTED_INTERNET_BROWSER_WIN10V1607" />
      <elements>
        <enum id="ShowMessageWhenOpeningSitesInInternetExplorer_Dropdown" required="true" valueName="ShowMessageWhenOpeningSitesInInternetExplorer">
          <item displayName="$(string.ShowMessageWhenOpeningSitesInInternetExplorer_Hide_ContinueInEdge)">
            <value>
              <decimal value="1" />
            </value>
          </item>
          <item displayName="$(string.ShowMessageWhenOpeningSitesInInternetExplorer_Show_ContinueInEdge)">
            <value>
              <decimal value="2" />
            </value>
          </item>
        </enum>
      </elements>
    </policy>

Editor controls

<presentation id="ShowMessageWhenOpeningSitesInInternetExplorer_Presentation" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
        <dropdownList defaultItem="0" noSort="true" refId="ShowMessageWhenOpeningSitesInInternetExplorer_Dropdown">Show Keep going in Microsoft Edge link</dropdownList>
      </presentation>

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_WIN10V1607
<definition displayName="$(string.SUPPORTED_INTERNET_BROWSER_WIN10V1607_DisplayName)" name="SUPPORTED_INTERNET_BROWSER_WIN10V1607" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
        <or>
          <range maxVersionIndex="1" minVersionIndex="1" ref="unresolved(products):MicrosoftEdge" />
        </or>
      </definition>
Microsoft.Policies.MicrosoftEdge:unresolved:unresolved(products):MicrosoftEdge
<unresolved reference="unresolved(products):MicrosoftEdge" />
Microsoft.Policies.Windows:category:WindowsComponents
<category displayName="$(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="$(string.InternetBrowser_ExplainCat)" name="MicrosoftEdge" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.Windows:WindowsComponents" />
    </category>
<strings><string id="Microsoft.Policies.MicrosoftEdge:InternetBrowser_DisplayName">Microsoft Edge</string><string id="Microsoft.Policies.MicrosoftEdge:InternetBrowser_ExplainCat">Microsoft Edge Category</string></strings>
Microsoft.Policies.MicrosoftEdge:definition:SUPPORTED_INTERNET_BROWSER_WIN10V1607
<definition displayName="$(string.SUPPORTED_INTERNET_BROWSER_WIN10V1607_DisplayName)" name="SUPPORTED_INTERNET_BROWSER_WIN10V1607" 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_WIN10V1607_DisplayName">Microsoft Edge on Windows 10, Version 1607 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>