Allow delegating default credentials
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\System\Credentials Delegation Description
This policy setting applies to applications using the Cred SSP component (for example: Remote Desktop Connection). This policy setting applies when server authentication was achieved by using a trusted X509 certificate or Kerberos. If you enable this policy setting, you can specify the servers to which the user's default credentials can be delegated (default credentials are those that you use when first logging on to Windows). The policy becomes effective the next time the user signs on to a computer running Windows. If you disable or do not configure (by default) this policy setting, delegation of default credentials is not permitted to any computer. Applications depending upon this delegation behavior might fail authentication. For more information, see KB. FWlink for KB: http://go.microsoft.com/fwlink/?LinkId=301508 Note: The "Allow delegating default credentials" policy setting can be set to one or more Service Principal Names (SPNs). The SPN represents the target server to which the user credentials can be delegated. The use of a single wildcard character is permitted when specifying the SPN. For Example: TERMSRV/host.humanresources.fabrikam.com Remote Desktop Session Host running on host.humanresources.fabrikam.com machine TERMSRV/* Remote Desktop Session Host running on all machines. TERMSRV/*.humanresources.fabrikam.com Remote Desktop Session Host running on all machines in .humanresources.fabrikam.com
Registry
Software\Policies\Microsoft\Windows\CredentialsDelegation Value name: AllowDefaultCredentials
Enabled: AllowDefaultCredentials = 1
Disabled: AllowDefaultCredentials = 0
MDM / Intune (CSP)
./Device/Vendor/MSFT/Policy/Config/ADMX_CredSsp/AllowDefaultCredentials 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 delegating default credentials
; State: Enabled
; Supported on: At least Windows Vista
[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\CredentialsDelegation]
"AllowDefaultCredentials"=dword:00000001
"ConcatenateDefaults_AllowDefault"=dword:00000001
[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\CredentialsDelegation\AllowDefaultCredentials]
; List values: enter one value per line in the builder UI.More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Allow delegating default credentials
# State: Enabled
# Supported on: At least Windows Vista
$path = 'HKLM:\Software\Policies\Microsoft\Windows\CredentialsDelegation'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'AllowDefaultCredentials' -Value 1 -Type DWord
Set-ItemProperty -Path $path -Name 'ConcatenateDefaults_AllowDefault' -Value 1 -Type DWord
$path = 'HKLM:\Software\Policies\Microsoft\Windows\CredentialsDelegation\AllowDefaultCredentials'
New-Item -Path $path -Force | Out-Null
# List values: enter one value per line in the builder UI.Intune XML
OMA-URI: ./Device/Vendor/MSFT/Policy/Config/ADMX_CredSsp/AllowDefaultCredentials
Data type: String
Value:
<enabled/>
<!-- AllowDefaultCredentials_Name: enter one value per line before copying this XML payload. -->
<data id="ConcatenateDefaults_ADC" value="1"/>Intune Remediation
# === Detection script ===
# Exported from gporais.com
# Policy: Allow delegating default credentials
# 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
}
# HKLM:\Software\Policies\Microsoft\Windows\CredentialsDelegation\AllowDefaultCredentials: List values: enter one value per line in the builder UI.
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Windows\CredentialsDelegation' -Name 'AllowDefaultCredentials' -Expected 1 -Kind DWord)
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Windows\CredentialsDelegation' -Name 'ConcatenateDefaults_AllowDefault' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Allow delegating default credentials
# State: Enabled
# Supported on: At least Windows Vista
$path = 'HKLM:\Software\Policies\Microsoft\Windows\CredentialsDelegation'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'AllowDefaultCredentials' -Value 1 -Type DWord
Set-ItemProperty -Path $path -Name 'ConcatenateDefaults_AllowDefault' -Value 1 -Type DWord
$path = 'HKLM:\Software\Policies\Microsoft\Windows\CredentialsDelegation\AllowDefaultCredentials'
New-Item -Path $path -Force | Out-Null
# List values: enter one value per line in the builder UI.SCCM scripts
# Exported from gporais.com
# Policy: Allow delegating default credentials
# 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 delegating default credentials
# 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
}
# HKLM:\Software\Policies\Microsoft\Windows\CredentialsDelegation\AllowDefaultCredentials: List values: enter one value per line in the builder UI.
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Windows\CredentialsDelegation' -Name 'AllowDefaultCredentials' -Expected 1 -Kind DWord)
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Windows\CredentialsDelegation' -Name 'ConcatenateDefaults_AllowDefault' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Allow delegating default credentials
# State: Enabled
# Supported on: At least Windows Vista
$path = 'HKLM:\Software\Policies\Microsoft\Windows\CredentialsDelegation'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'AllowDefaultCredentials' -Value 1 -Type DWord
Set-ItemProperty -Path $path -Name 'ConcatenateDefaults_AllowDefault' -Value 1 -Type DWord
$path = 'HKLM:\Software\Policies\Microsoft\Windows\CredentialsDelegation\AllowDefaultCredentials'
New-Item -Path $path -Force | Out-Null
# List values: enter one value per line in the builder UI.Building a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.