Display string when smart card is blocked: registry value IntegratedUnblockPromptStringComputerHKLM\SOFTWARE\Policies\Microsoft\Windows\SmartCardCredentialProvider

Policy ID: IntegratedUnblockPromptString
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

IntegratedUnblockPromptString

REG_SZComputer

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

Enabled value: Depends on the option value
Element: Display string when smart card is blocked
Value type: REG_SZ

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

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

; Value names and types follow the ADMX. Replace <enter value> below with your own data
"IntegratedUnblockPromptString"="<enter value>"

CMD

:: Value names and types follow the ADMX. Replace <enter value> below with your own data

reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows\SmartCardCredentialProvider" /v "IntegratedUnblockPromptString" /t REG_SZ /d "<enter value>" /f

PowerShell

# Value names and types follow the ADMX. Replace <enter value> below with your own data

New-Item -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\SmartCardCredentialProvider' -Force | Out-Null
New-ItemProperty -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\SmartCardCredentialProvider' -Name 'IntegratedUnblockPromptString' -PropertyType String -Value '<enter value>' -Force | Out-Null