KDC support for PKInit Freshness Extension: registry value PKINITFreshnessComputerHKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\KDC\Parameters

Policy ID: PKINITFreshness
Scope: Computer Configuration
Supported on: At least Windows Server 2016, Windows 10
Source: Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category: System › KDC

Registry

PKINITFreshness

REG_DWORDComputer

HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\KDC\Parameters Current key

Enabled value: Depends on the option value
Element: PKInit Freshness Extension options:

Options
Item	Stored value
Disabled	0
Supported	1
Required	2

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System\KDC\Parameters]

; Options (use only one)
; Disabled
"PKINITFreshness"=dword:00000000
; Supported
"PKINITFreshness"=dword:00000001
; Required
"PKINITFreshness"=dword:00000002

CMD

:: Options (use only one)

:: Disabled
reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\KDC\Parameters" /v "PKINITFreshness" /t REG_DWORD /d 0 /f
:: Supported
reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\KDC\Parameters" /v "PKINITFreshness" /t REG_DWORD /d 1 /f
:: Required
reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System\KDC\Parameters" /v "PKINITFreshness" /t REG_DWORD /d 2 /f

PowerShell

# Common: create the key
New-Item -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\KDC\Parameters' -Force | Out-Null

# Options (use only one)
# Disabled
New-ItemProperty -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\KDC\Parameters' -Name 'PKINITFreshness' -PropertyType DWord -Value 0 -Force | Out-Null
# Supported
New-ItemProperty -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\KDC\Parameters' -Name 'PKINITFreshness' -PropertyType DWord -Value 1 -Force | Out-Null
# Required
New-ItemProperty -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System\KDC\Parameters' -Name 'PKINITFreshness' -PropertyType DWord -Value 2 -Force | Out-Null