Don't run antimalware programs against ActiveX controls
Verified with Windows 11 25H2 — updated on July 23, 2026
Supported on: At least Internet Explorer 11.0
Path in the GPO console
Computer Configuration\Administrative Templates\Windows Components\Internet Explorer\Internet Control Panel\Security Page\Locked-Down Restricted Sites Zone User Configuration\Administrative Templates\Windows Components\Internet Explorer\Internet Control Panel\Security Page\Locked-Down Restricted Sites Zone Description
This policy setting determines whether Internet Explorer runs antimalware programs against ActiveX controls, to check if they're safe to load on pages. If you enable this policy setting, Internet Explorer won't check with your antimalware program to see if it's safe to create an instance of the ActiveX control. If you disable this policy setting, Internet Explorer always checks with your antimalware program to see if it's safe to create an instance of the ActiveX control. If you don't configure this policy setting, Internet Explorer always checks with your antimalware program to see if it's safe to create an instance of the ActiveX control. Users can turn this behavior on or off, using Internet Explorer Security settings.
Registry
HKLM
Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\4 HKCU
Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\4 Export Builder
BETAConfigure the state, scope and options, then generate .reg, PowerShell, Intune and SCCM outputs — or add the setting to a multi-setting collection.
These exports write the registry — this is not a managed GPO. ⓘ
Applying both scopes creates an ambiguous configuration (computer takes precedence over user). Only do this intentionally.
.reg file
Windows Registry Editor Version 5.00
; Exported from gporais.com
; Policy: Don't run antimalware programs against ActiveX controls
; State: Enabled
; Scope: Computer (HKLM)
; Supported on: At least Internet Explorer 11.0
[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\4]
"270C"=dword:00000000More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Don't run antimalware programs against ActiveX controls
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: At least Internet Explorer 11.0
$path = 'HKLM:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\4'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name '270C' -Value 0 -Type DWordIntune XML
No direct Policy CSP / OMA-URI mapping for this policy. Use the Intune Remediation tab, or ingest the ADMX in Intune.Intune Remediation
# === Detection script ===
# Exported from gporais.com
# Policy: Don't run antimalware programs against ActiveX controls
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: At least Internet Explorer 11.0
function Test-RegistryValue {
param(
[Parameter(Mandatory = $true)][string]$Path,
[Parameter(Mandatory = $true)][string]$Name,
[object]$Expected,
[ValidateSet('String', 'DWord', 'MultiString')][string]$Kind = 'String',
[switch]$Absent
)
try {
$item = Get-ItemProperty -LiteralPath $Path -Name $Name -ErrorAction Stop
} catch {
return $Absent.IsPresent
}
if ($Absent.IsPresent) { return $false }
$actual = $item.$Name
if ($Kind -eq 'DWord') { return ([int64]$actual) -eq ([int64]$Expected) }
if ($Kind -eq 'MultiString') {
$actualValues = @($actual)
$expectedValues = @($Expected)
if ($actualValues.Count -ne $expectedValues.Count) { return $false }
for ($i = 0; $i -lt $expectedValues.Count; $i++) {
if ([string]$actualValues[$i] -ne [string]$expectedValues[$i]) { return $false }
}
return $true
}
return [string]$actual -eq [string]$Expected
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\4' -Name '270C' -Expected 0 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Don't run antimalware programs against ActiveX controls
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: At least Internet Explorer 11.0
$path = 'HKLM:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\4'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name '270C' -Value 0 -Type DWordSCCM scripts
# Exported from gporais.com
# Policy: Don't run antimalware programs against ActiveX controls
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: At least Internet Explorer 11.0
# SCCM Configuration Item guidance:
# Create a Configuration Item of type "Setting: Script".
# Discovery script: use the Detection script below.
# Remediation script: use the Remediation script below.
# Compliance rule: the Discovery script output equals 'Compliant'.
# === Detection script ===
# Exported from gporais.com
# Policy: Don't run antimalware programs against ActiveX controls
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: At least Internet Explorer 11.0
function Test-RegistryValue {
param(
[Parameter(Mandatory = $true)][string]$Path,
[Parameter(Mandatory = $true)][string]$Name,
[object]$Expected,
[ValidateSet('String', 'DWord', 'MultiString')][string]$Kind = 'String',
[switch]$Absent
)
try {
$item = Get-ItemProperty -LiteralPath $Path -Name $Name -ErrorAction Stop
} catch {
return $Absent.IsPresent
}
if ($Absent.IsPresent) { return $false }
$actual = $item.$Name
if ($Kind -eq 'DWord') { return ([int64]$actual) -eq ([int64]$Expected) }
if ($Kind -eq 'MultiString') {
$actualValues = @($actual)
$expectedValues = @($Expected)
if ($actualValues.Count -ne $expectedValues.Count) { return $false }
for ($i = 0; $i -lt $expectedValues.Count; $i++) {
if ([string]$actualValues[$i] -ne [string]$expectedValues[$i]) { return $false }
}
return $true
}
return [string]$actual -eq [string]$Expected
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\4' -Name '270C' -Expected 0 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Don't run antimalware programs against ActiveX controls
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: At least Internet Explorer 11.0
$path = 'HKLM:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\4'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name '270C' -Value 0 -Type DWordBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.