Extended Protection for LDAP Authentication (Domain Controllers only) (DEPRECATED)
Verified with Microsoft Security Baseline (MSS / SecGuide) 25H2 — updated on July 10, 2026
Supported on: Windows Server 2008 and newer
Path in the GPO console
Computer Configuration\Administrative Templates\MS Security Guide Description
Beginning with the Windows 10 and Windows Server v2004 security baseline this setting has been moved to Security Options\Domain controller: LDAP server channel binding token requirements.
Registry
HKLM
System\CurrentControlSet\Services\NTDS\Parameters Value name: LdapEnforceChannelBinding
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: Extended Protection for LDAP Authentication (Domain Controllers only) (DEPRECATED)
; State: Enabled
; Supported on: Windows Server 2008 and newer
[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\NTDS\Parameters]
"LdapEnforceChannelBinding"=dword:00000001
"LdapEnforceChannelBinding"=dword:00000002More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Extended Protection for LDAP Authentication (Domain Controllers only) (DEPRECATED)
# State: Enabled
# Supported on: Windows Server 2008 and newer
$path = 'HKLM:\System\CurrentControlSet\Services\NTDS\Parameters'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'LdapEnforceChannelBinding' -Value 1 -Type DWord
Set-ItemProperty -Path $path -Name 'LdapEnforceChannelBinding' -Value 2 -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: Extended Protection for LDAP Authentication (Domain Controllers only) (DEPRECATED)
# State: Enabled
# Supported on: Windows Server 2008 and newer
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\System\CurrentControlSet\Services\NTDS\Parameters' -Name 'LdapEnforceChannelBinding' -Expected 1 -Kind DWord)
(Test-RegistryValue -Path 'HKLM:\System\CurrentControlSet\Services\NTDS\Parameters' -Name 'LdapEnforceChannelBinding' -Expected 2 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Extended Protection for LDAP Authentication (Domain Controllers only) (DEPRECATED)
# State: Enabled
# Supported on: Windows Server 2008 and newer
$path = 'HKLM:\System\CurrentControlSet\Services\NTDS\Parameters'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'LdapEnforceChannelBinding' -Value 1 -Type DWord
Set-ItemProperty -Path $path -Name 'LdapEnforceChannelBinding' -Value 2 -Type DWordSCCM scripts
# Exported from gporais.com
# Policy: Extended Protection for LDAP Authentication (Domain Controllers only) (DEPRECATED)
# State: Enabled
# Supported on: Windows Server 2008 and newer
# 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: Extended Protection for LDAP Authentication (Domain Controllers only) (DEPRECATED)
# State: Enabled
# Supported on: Windows Server 2008 and newer
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\System\CurrentControlSet\Services\NTDS\Parameters' -Name 'LdapEnforceChannelBinding' -Expected 1 -Kind DWord)
(Test-RegistryValue -Path 'HKLM:\System\CurrentControlSet\Services\NTDS\Parameters' -Name 'LdapEnforceChannelBinding' -Expected 2 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Extended Protection for LDAP Authentication (Domain Controllers only) (DEPRECATED)
# State: Enabled
# Supported on: Windows Server 2008 and newer
$path = 'HKLM:\System\CurrentControlSet\Services\NTDS\Parameters'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'LdapEnforceChannelBinding' -Value 1 -Type DWord
Set-ItemProperty -Path $path -Name 'LdapEnforceChannelBinding' -Value 2 -Type DWordBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.