Hide mechanisms to remove zone information
Verified with Windows 11 25H2 — updated on July 30, 2026
Supported on: At least Windows XP Professional with SP2
Path in the GPO console
User Configuration\Administrative Templates\Windows Components\Attachment Manager Description
This policy setting allows you to manage whether users can manually remove the zone information from saved file attachments by clicking the Unblock button in the file's property sheet or by using a check box in the security warning dialog. Removing the zone information allows users to open potentially dangerous file attachments that Windows has blocked users from opening. If you enable this policy setting, Windows hides the check box and Unblock button. If you disable this policy setting, Windows shows the check box and Unblock button. If you do not configure this policy setting, Windows hides the check box and Unblock button.
Registry
HKCU
Software\Microsoft\Windows\CurrentVersion\Policies\Attachments Value name: HideZoneInfoOnProperties
Enabled: HideZoneInfoOnProperties = 1
Disabled: HideZoneInfoOnProperties = 0
MDM / Intune (CSP)
./User/Vendor/MSFT/Policy/Config/AttachmentManager/HideZoneInfoMechanism Microsoft Learn documentation Mapping data: Microsoft Learn (CC BY 4.0)
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. ⓘ
.reg file
Windows Registry Editor Version 5.00
; Exported from gporais.com
; Policy: Hide mechanisms to remove zone information
; State: Enabled
; Supported on: At least Windows XP Professional with SP2
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Attachments]
"HideZoneInfoOnProperties"=dword:00000001More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Hide mechanisms to remove zone information
# State: Enabled
# Supported on: At least Windows XP Professional with SP2
# Warning: In SYSTEM context (the Intune default), HKCU targets the SYSTEM profile. Run this script using the logged-on credentials.
$path = 'HKCU:\Software\Microsoft\Windows\CurrentVersion\Policies\Attachments'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'HideZoneInfoOnProperties' -Value 1 -Type DWordIntune XML
OMA-URI: ./User/Vendor/MSFT/Policy/Config/AttachmentManager/HideZoneInfoMechanism
Data type: String
Value:
<enabled/>Intune Remediation
# === Detection script ===
# Exported from gporais.com
# Policy: Hide mechanisms to remove zone information
# State: Enabled
# Supported on: At least Windows XP Professional with SP2
# Warning: In SYSTEM context (the Intune default), HKCU targets the SYSTEM profile. Run this script using the logged-on credentials.
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
}
$checks = @(
(Test-RegistryValue -Path 'HKCU:\Software\Microsoft\Windows\CurrentVersion\Policies\Attachments' -Name 'HideZoneInfoOnProperties' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Hide mechanisms to remove zone information
# State: Enabled
# Supported on: At least Windows XP Professional with SP2
# Warning: In SYSTEM context (the Intune default), HKCU targets the SYSTEM profile. Run this script using the logged-on credentials.
$path = 'HKCU:\Software\Microsoft\Windows\CurrentVersion\Policies\Attachments'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'HideZoneInfoOnProperties' -Value 1 -Type DWordSCCM scripts
# Exported from gporais.com
# Policy: Hide mechanisms to remove zone information
# State: Enabled
# Supported on: At least Windows XP Professional with SP2
# 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: Hide mechanisms to remove zone information
# State: Enabled
# Supported on: At least Windows XP Professional with SP2
# Warning: In SYSTEM context (the Intune default), HKCU targets the SYSTEM profile. Run this script using the logged-on credentials.
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
}
$checks = @(
(Test-RegistryValue -Path 'HKCU:\Software\Microsoft\Windows\CurrentVersion\Policies\Attachments' -Name 'HideZoneInfoOnProperties' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Hide mechanisms to remove zone information
# State: Enabled
# Supported on: At least Windows XP Professional with SP2
# Warning: In SYSTEM context (the Intune default), HKCU targets the SYSTEM profile. Run this script using the logged-on credentials.
$path = 'HKCU:\Software\Microsoft\Windows\CurrentVersion\Policies\Attachments'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'HideZoneInfoOnProperties' -Value 1 -Type DWordBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.