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:
Windows 10 Home 1507Disabled
Windows 10 Pro 1507Disabled
Windows 10 Education 1507Disabled
Windows 10 Enterprise 1507Disabled
Windows 10 Home 1511Disabled
Windows 10 Pro 1511Disabled
Windows 10 Education 1511Disabled
Windows 10 Enterprise 1511Disabled
Windows 10 Home 1607Disabled
Windows 10 Pro 1607Disabled
Windows 10 Education 1607Disabled
Windows 10 Enterprise 1607Disabled
Windows 10 Home 1703Disabled
Windows 10 Pro 1703Disabled
Windows 10 Education 1703Disabled
Windows 10 Enterprise 1703Disabled
Windows 10 Home 1709Disabled
Windows 10 Pro 1709Disabled
Windows 10 Education 1709Disabled
Windows 10 Enterprise 1709Disabled
Windows 10 Home 1803Manual
Windows 10 Pro 1803Manual
Windows 10 Education 1803Manual
Windows 10 Enterprise 1803Manual
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. It is disabled in Windows 10 Home 1507, Windows 10 Pro 1507, Windows 10 Education 1507, Windows 10 Enterprise 1507, Windows 10 Home 1511, Windows 10 Pro 1511, Windows 10 Education 1511, Windows 10 Enterprise 1511, Windows 10 Home 1607, Windows 10 Pro 1607, Windows 10 Education 1607, Windows 10 Enterprise 1607, Windows 10 Home 1703, Windows 10 Pro 1703, Windows 10 Education 1703, Windows 10 Enterprise 1703, Windows 10 Home 1709, Windows 10 Pro 1709, Windows 10 Education 1709, Windows 10 Enterprise 1709. This service is starting only if the user, an application or another service starts it in 1803 Home, 1803 Pro, 1803 Education, 1803 Enterprise. 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

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. Depending on the version of your operating system, copy the commands below, paste them into the command window and press ENTER.

For Windows 10 1507 Home, Windows 10 1507 Pro, Windows 10 1507 Education, Windows 10 1507 Enterprise, Windows 10 1511 Home, Windows 10 1511 Pro, Windows 10 1511 Education, Windows 10 1511 Enterprise, Windows 10 1607 Home, Windows 10 1607 Pro, Windows 10 1607 Education, Windows 10 1607 Enterprise, Windows 10 1703 Home, Windows 10 1703 Pro, Windows 10 1703 Education, Windows 10 1703 Enterprise, Windows 10 1709 Home, Windows 10 1709 Pro, Windows 10 1709 Education, Windows 10 1709 Enterprise:
sc stop SCardSvr
sc config SCardSvr start= disabled

For Windows 10 1803 Home, Windows 10 1803 Pro, Windows 10 1803 Education, Windows 10 1803 Enterprise:
sc config SCardSvr start= demand

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.