Smart Card (SCardSvr) Service Defaults in Windows 10

Manages access to smart cards read by your computer. If this service is stopped, your computer will be unable to read smart cards. If this service is disabled, any services that explicitly depend on it will fail to start.

Default Settings

Startup type:Disabled
Display name:Smart Card
Service name:SCardSvr
Service type:share
Error control:normal
Group:SmartCardGroup
Object:NT AUTHORITY\LocalService
Path:%SystemRoot%\system32\svchost.exe -k LocalServiceAndNoImpersonation
File:%SystemRoot%\System32\SCardSvr.dll
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SCardSvr
Privileges:
  • SeCreateGlobalPrivilege
  • SeChangeNotifyPrivilege

Default Behavior

Smart Card is a Win32 service. In Windows 10 it is disabled. When the Smart Card service is started, it is running as NT AUTHORITY\LocalService in a shared process of svchost.exe along with other services. If Smart Card fails to start, the failure details are being recorded into Event Log. Then Windows 10 will start up and notify the user that the SCardSvr service has failed to start due to the error.

Dependencies

Smart Card cannot be started under any conditions, if the Windows Driver Foundation - User-mode Driver Framework service is disabled.

Restore Default Startup Configuration for Smart Card

1. Select your Windows 10 edition and release, and then click Download.

2. Save the Win10_SCardSvr_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The SCardSvr service is using the SCardSvr.dll file that is located in the %WinDir%\System32 folder. If the file is changed, damaged or deleted, you can restore its original version from Windows 10 installation media.