Turn on root certificate propagation from smart card: registry value EnableRootCertificatePropagationComputerHKLM\SOFTWARE\Policies\Microsoft\Windows\CertProp

Policy ID: CertPropRootEnabledString
Scope: Computer Configuration
Supported on: At least Windows Vista
Source: Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category: Windows Components › Smart Card

Registry

EnableRootCertificatePropagation

REG_DWORDComputer

HKLM\SOFTWARE\Policies\Microsoft\Windows\CertProp Current key

Enabled value: 1
Disabled value: 0

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\CertProp]

; Options (use only one)
; Enabled
"EnableRootCertificatePropagation"=dword:00000001
; Disabled
"EnableRootCertificatePropagation"=dword:00000000

CMD

:: Options (use only one)

:: Enabled
reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows\CertProp" /v "EnableRootCertificatePropagation" /t REG_DWORD /d 1 /f
:: Disabled
reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows\CertProp" /v "EnableRootCertificatePropagation" /t REG_DWORD /d 0 /f

PowerShell

# Common: create the key
New-Item -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\CertProp' -Force | Out-Null

# Options (use only one)
# Enabled
New-ItemProperty -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\CertProp' -Name 'EnableRootCertificatePropagation' -PropertyType DWord -Value 1 -Force | Out-Null
# Disabled
New-ItemProperty -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\CertProp' -Name 'EnableRootCertificatePropagation' -PropertyType DWord -Value 0 -Force | Out-Null