Windows 7 Services

Smart card PnP Class Filter Driver - Windows 7 Service

Smart card reader filter driver enabling smart card PnP.

This service also exists in Windows 10 and 8.

Startup Type

Windows 7 edition without SP SP1
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Default Properties

Display name:Smart card PnP Class Filter Driver
Service name:scfilter
Error control:normal
Group:PnP Filter

Default Behavior

The Smart card PnP Class Filter Driver service is a kernel driver. If the Smart card PnP Class Filter Driver fails to load or initialize, the error is recorded into the Event Log. Windows 7 startup should proceed, but a message box is displayed informing you that the scfilter service has failed to start.

Restore Default Startup Type of Smart card PnP Class Filter Driver

Automated Restore

1. Select your Windows 7 edition and Service Pack, and then click on the Download button below.

2. Save the RestoreSmartcardPnPClassFilterDriverWindows7.bat file to any folder on your hard drive.

3. Right-click the downloaded batch file and select Run as administrator.

4. Restart the computer to save changes.

Note. Make sure that the scfilter.sys file exists in the %WinDir%\System32\DRIVERS folder. If this file is missing you can try to restore it from your Windows 7 installation media.

Yea, though I walk through the valley of the shadow of death, I will fear no evil: for thou art with me; thy rod and thy staff they comfort me.