Allow certificates with no extended key usage certificate attribute
Verified with Windows 11 25H2 — updated on July 30, 2026
Supported on: At least Windows Vista
Path in the GPO console
Computer Configuration\Administrative Templates\Windows Components\Smart Card Description
This policy setting lets you allow certificates without an Extended Key Usage (EKU) set to be used for logon. In versions of Windows prior to Windows Vista, smart card certificates that are used for logon require an enhanced key usage (EKU) extension with a smart card logon object identifier. This policy setting can be used to modify that restriction. If you enable this policy setting, certificates with the following attributes can also be used to log on with a smart card: - Certificates with no EKU - Certificates with an All Purpose EKU - Certificates with a Client Authentication EKU If you disable or do not configure this policy setting, only certificates that contain the smart card logon object identifier can be used to log on with a smart card.
Registry
SOFTWARE\Policies\Microsoft\Windows\SmartCardCredentialProvider Value name: AllowCertificatesWithNoEKU
Enabled: AllowCertificatesWithNoEKU = 1
Disabled: AllowCertificatesWithNoEKU = 0
MDM / Intune (CSP)
./Device/Vendor/MSFT/Policy/Config/ADMX_Smartcard/AllowCertificatesWithNoEKU 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: Allow certificates with no extended key usage certificate attribute
; State: Enabled
; Supported on: At least Windows Vista
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\SmartCardCredentialProvider]
"AllowCertificatesWithNoEKU"=dword:00000001More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Allow certificates with no extended key usage certificate attribute
# State: Enabled
# Supported on: At least Windows Vista
$path = 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\SmartCardCredentialProvider'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'AllowCertificatesWithNoEKU' -Value 1 -Type DWordIntune XML
OMA-URI: ./Device/Vendor/MSFT/Policy/Config/ADMX_Smartcard/AllowCertificatesWithNoEKU
Data type: String
Value:
<enabled/>Intune Remediation
# === Detection script ===
# Exported from gporais.com
# Policy: Allow certificates with no extended key usage certificate attribute
# State: Enabled
# Supported on: At least Windows Vista
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\SmartCardCredentialProvider' -Name 'AllowCertificatesWithNoEKU' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Allow certificates with no extended key usage certificate attribute
# State: Enabled
# Supported on: At least Windows Vista
$path = 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\SmartCardCredentialProvider'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'AllowCertificatesWithNoEKU' -Value 1 -Type DWordSCCM scripts
# Exported from gporais.com
# Policy: Allow certificates with no extended key usage certificate attribute
# State: Enabled
# Supported on: At least Windows Vista
# 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: Allow certificates with no extended key usage certificate attribute
# State: Enabled
# Supported on: At least Windows Vista
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\SmartCardCredentialProvider' -Name 'AllowCertificatesWithNoEKU' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Allow certificates with no extended key usage certificate attribute
# State: Enabled
# Supported on: At least Windows Vista
$path = 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\SmartCardCredentialProvider'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'AllowCertificatesWithNoEKU' -Value 1 -Type DWordBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.