Configure Microsoft Defender SmartScreen to block potentially unwanted apps
Verified with Microsoft Edge 152.0.4191.53 — updated on July 10, 2026
Supported on: Microsoft Edge version 80, Windows 7 or later
Path in the GPO console
Computer Configuration\Administrative Templates\Microsoft Edge\SmartScreen settings User Configuration\Administrative Templates\Microsoft Edge\SmartScreen settings Description
This policy setting lets you configure whether to turn on blocking for potentially unwanted apps with Microsoft Defender SmartScreen. Potentially unwanted app blocking with Microsoft Defender SmartScreen provides warning messages to help protect users from adware, coin miners, bundleware, and other low-reputation apps that are hosted by websites. Potentially unwanted app blocking with Microsoft Defender SmartScreen is turned off by default. If you enable this setting, potentially unwanted app blocking with Microsoft Defender SmartScreen is turned on. If you disable this setting, potentially unwanted app blocking with Microsoft Defender SmartScreen is turned off. If you don't configure this setting, users can choose whether to use potentially unwanted app blocking with Microsoft Defender SmartScreen. This policy is available only on Windows instances that are joined to a Microsoft Active Directory domain, Windows 10 Pro or Enterprise instances that enrolled for device management, or macOS instances that are managed via Mobile Device Management (MDM) or joined to a domain via MCX.
Registry
Software\Policies\Microsoft\Edge Software\Policies\Microsoft\Edge Value name: SmartScreenPuaEnabled
Enabled: SmartScreenPuaEnabled = 1
Disabled: SmartScreenPuaEnabled = 0
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: Configure Microsoft Defender SmartScreen to block potentially unwanted apps
; State: Enabled
; Scope: Computer (HKLM)
; Supported on: Microsoft Edge version 80, Windows 7 or later
[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Edge]
"SmartScreenPuaEnabled"=dword:00000001More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Configure Microsoft Defender SmartScreen to block potentially unwanted apps
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge version 80, Windows 7 or later
$path = 'HKLM:\Software\Policies\Microsoft\Edge'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'SmartScreenPuaEnabled' -Value 1 -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: Configure Microsoft Defender SmartScreen to block potentially unwanted apps
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge version 80, Windows 7 or later
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Edge' -Name 'SmartScreenPuaEnabled' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Configure Microsoft Defender SmartScreen to block potentially unwanted apps
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge version 80, Windows 7 or later
$path = 'HKLM:\Software\Policies\Microsoft\Edge'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'SmartScreenPuaEnabled' -Value 1 -Type DWordSCCM scripts
# Exported from gporais.com
# Policy: Configure Microsoft Defender SmartScreen to block potentially unwanted apps
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge version 80, Windows 7 or later
# 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: Configure Microsoft Defender SmartScreen to block potentially unwanted apps
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge version 80, Windows 7 or later
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Edge' -Name 'SmartScreenPuaEnabled' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Configure Microsoft Defender SmartScreen to block potentially unwanted apps
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge version 80, Windows 7 or later
$path = 'HKLM:\Software\Policies\Microsoft\Edge'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'SmartScreenPuaEnabled' -Value 1 -Type DWordBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.