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, 11 and 8.
Startup Type
| Windows 7 edition | without SP | SP1 |
|---|---|---|
| Starter | Manual | Manual |
| Home Basic | Manual | Manual |
| Home Premium | Manual | Manual |
| Professional | Manual | Manual |
| Ultimate | Manual | Manual |
| Enterprise | Manual | Manual |
Default Properties
| Display name: | Smart card PnP Class Filter Driver |
| Service name: | scfilter |
| Type: | kernel |
| Path: | %WinDir%\System32\DRIVERS\scfilter.sys |
| 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.