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
Object:NT AUTHORITY\LocalService
Path:%SystemRoot%\system32\svchost.exe -k LocalServiceAndNoImpersonation
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SCardSvr
  • 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.


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

Before you begin doing this, make sure that all the services on which Smart Card depends are configured by default and function properly. See the list of dependencies above.

1. Run the Command Prompt as an administrator.

2. Copy the commands below, paste them into the command window and press ENTER:

sc stop SCardSvr
sc config SCardSvr start= disabled

3. Close the command window and 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.