Configure Outlook Express

UserIntune-readyOESettings

Supported on Only Internet Explorer 6.0

22H2 · 1.0

What it does

Allows Administrators to enable and disable the ability for Outlook Express users to save or open attachments that can potentially contain a virus. If you check the block attachments setting, users will be unable to open or save attachments that could potentially contain a virus. Users will not be able to disable the blocking of attachments in options. If the block attachments setting is not checked, the user can specify to enable or disable the blocking of attachments in options.

What it writes

Hive: HKEY_CURRENT_USER
Registry key: Software\Policies\Microsoft\Internet Explorer\Control Panel

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
Block attachments that could contain a virus	Checkbox	`Software\Microsoft\Outlook ExpressBlockExeAttachments`	On (1) or off (0)

Configure and deploy

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

Enabled · User · template defaults

Registry file (.reg)

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Microsoft\Outlook Express]
"BlockExeAttachments"=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: Configure Outlook Express
# Name: OESettings
# Scope: User
# State: Enabled
# Source: inetres.admx

Set-RegistryValue -Path 'Registry::HKEY_CURRENT_USER\Software\Microsoft\Outlook Express' -Name 'BlockExeAttachments' -PropertyType 'DWord' -Value 1

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: OEVirus

ADMX profile candidate (OMA-URI)

./User/Vendor/MSFT/Policy/Config/ADMX_inetres/OESettings

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: Configure Outlook Express
# Name: OESettings
# Scope: User
# State: Enabled
# Source: inetres.admx

$isMatch = Test-RegistryValueEquals -Path 'Registry::HKEY_CURRENT_USER\Software\Microsoft\Outlook Express' -Name 'BlockExeAttachments' -Kind 'DWord' -Expected 1
if (-not $isMatch) {
    $reasons.Add('Value mismatch: HKEY_CURRENT_USER\Software\Microsoft\Outlook Express\BlockExeAttachments') | 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: Configure Outlook Express
# Name: OESettings
# Scope: User
# State: Enabled
# Source: inetres.admx

Set-RegistryValue -Path 'Registry::HKEY_CURRENT_USER\Software\Microsoft\Outlook Express' -Name 'BlockExeAttachments' -PropertyType 'DWord' -Value 1

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: OESettings
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="User" displayName="$(string.OESettings)" explainText="$(string.IE_ExplainOEVirusProtection)" key="Software\Policies\Microsoft\Internet Explorer\Control Panel" name="OESettings" presentation="$(presentation.OESettings)" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.InternetExplorer:InternetExplorer" />
      <supportedOn ref="Microsoft.Policies.InternetExplorer:SUPPORTED_IE6ONLY" />
      <elements>
        <boolean id="OEVirus" key="Software\Microsoft\Outlook Express" valueName="BlockExeAttachments">
          <trueValue>
            <decimal value="1" />
          </trueValue>
          <falseValue>
            <decimal value="0" />
          </falseValue>
        </boolean>
      </elements>
    </policy>

Editor controls

<presentation id="OESettings" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
        <checkBox refId="OEVirus">Block attachments that could contain a virus</checkBox>
      </presentation>

Supported platforms and 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_IE6ONLY
<definition displayName="$(string.SUPPORTED_IE6ONLY)" name="SUPPORTED_IE6ONLY" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
        <or>
          <reference ref="Microsoft.Policies.Products:InternetExplorer60" />
        </or>
      </definition>
Microsoft.Policies.InternetExplorer:unresolved:Microsoft.Policies.Products:InternetExplorer60
<unresolved reference="Microsoft.Policies.Products:InternetExplorer60" />
Microsoft.Policies.Windows:category:WindowsComponents
<category displayName="$(string.WindowsComponents)" explainText="$(string.WindowsComponents_Help)" name="WindowsComponents" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions" />
Microsoft.Policies.InternetExplorer:category:InternetExplorer
<category displayName="$(string.InternetExplorer)" explainText="$(string.IE_ExplainCat)" name="InternetExplorer" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.Windows:WindowsComponents" />
    </category>
<strings><string id="Microsoft.Policies.InternetExplorer:IE_ExplainCat">Contains settings to configure Internet Explorer</string><string id="Microsoft.Policies.InternetExplorer:InternetExplorer">Internet Explorer</string></strings>
Microsoft.Policies.InternetExplorer:definition:SUPPORTED_IE6ONLY
<definition displayName="$(string.SUPPORTED_IE6ONLY)" name="SUPPORTED_IE6ONLY" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
        <or>
          <reference ref="Microsoft.Policies.Products:InternetExplorer60" />
        </or>
      </definition>
<strings><string id="Microsoft.Policies.InternetExplorer:SUPPORTED_IE6ONLY">Only Internet Explorer 6.0</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>