Prevent certificate error overrides
Verified with Windows 11 25H2 — updated on July 30, 2026
Supported on: Microsoft Edge on Windows 10, Version 1809 or later
Path in the GPO console
Computer Configuration\Administrative Templates\Windows Components\Microsoft Edge User Configuration\Administrative Templates\Windows Components\Microsoft Edge Description
Web security certificates are used to ensure a site your users go to is legitimate, and in some circumstances encrypts the data. With this policy, you can specify whether to prevent users from bypassing the security warning to sites that have SSL errors. If enabled, overriding certificate errors are not allowed. If disabled or not configured, overriding certificate errors are allowed.
Registry
HKLM
Software\Policies\Microsoft\MicrosoftEdge\Internet Settings HKCU
Software\Policies\Microsoft\MicrosoftEdge\Internet Settings Value name: PreventCertErrorOverrides
Enabled: PreventCertErrorOverrides = 1
Disabled: PreventCertErrorOverrides = 0
MDM / Intune (CSP)
Device
./Device/Vendor/MSFT/Policy/Config/Browser/PreventCertErrorOverrides User
./User/Vendor/MSFT/Policy/Config/Browser/PreventCertErrorOverrides Microsoft Learn documentation Mapping data: Microsoft Learn (CC BY 4.0)
CSP values
-
0 (Default)- Allowed/turned on. Override the security warning to sites that have SSL errors. -
1- Prevented/turned on.
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: Prevent certificate error overrides
; State: Enabled
; Scope: Computer (HKLM)
; Supported on: Microsoft Edge on Windows 10, Version 1809 or later
[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\MicrosoftEdge\Internet Settings]
"PreventCertErrorOverrides"=dword:00000001More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Prevent certificate error overrides
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge on Windows 10, Version 1809 or later
$path = 'HKLM:\Software\Policies\Microsoft\MicrosoftEdge\Internet Settings'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'PreventCertErrorOverrides' -Value 1 -Type DWordIntune XML
OMA-URI: ./Device/Vendor/MSFT/Policy/Config/Browser/PreventCertErrorOverrides
Data type: String
Value:
<enabled/>Intune Remediation
# === Detection script ===
# Exported from gporais.com
# Policy: Prevent certificate error overrides
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge on Windows 10, Version 1809 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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\MicrosoftEdge\Internet Settings' -Name 'PreventCertErrorOverrides' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Prevent certificate error overrides
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge on Windows 10, Version 1809 or later
$path = 'HKLM:\Software\Policies\Microsoft\MicrosoftEdge\Internet Settings'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'PreventCertErrorOverrides' -Value 1 -Type DWordSCCM scripts
# Exported from gporais.com
# Policy: Prevent certificate error overrides
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge on Windows 10, Version 1809 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: Prevent certificate error overrides
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge on Windows 10, Version 1809 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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\MicrosoftEdge\Internet Settings' -Name 'PreventCertErrorOverrides' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Prevent certificate error overrides
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge on Windows 10, Version 1809 or later
$path = 'HKLM:\Software\Policies\Microsoft\MicrosoftEdge\Internet Settings'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'PreventCertErrorOverrides' -Value 1 -Type DWordBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.