Ancillary Function Driver for Winsock - Windows 7 Service
Ancillary Function Driver for Winsock.
This service also exists in Windows 10, 11, 8, Vista and XP.
Startup Type
| Windows 7 edition | without SP | SP1 |
|---|---|---|
| Starter | System | System |
| Home Basic | System | System |
| Home Premium | System | System |
| Professional | System | System |
| Ultimate | System | System |
| Enterprise | System | System |
Default Properties
| Display name: | Ancillary Function Driver for Winsock |
| Service name: | AFD |
| Type: | kernel |
| Path: | %WinDir%\system32\drivers\afd.sys |
| Error control: | normal |
| Group: | PNP_TDI |
Default Behavior
The Ancillary Function Driver for Winsock service is a kernel driver. If the Ancillary Function Driver for Winsock 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 AFD service has failed to start.
Dependencies
If the Ancillary Function Driver for Winsock is stopped, the following services will not start and initialize:
Restore Default Startup Type of Ancillary Function Driver for Winsock
Automated Restore
1. Select your Windows 7 edition and Service Pack, and then click on the Download button below.
2. Save the RestoreAncillaryFunctionDriverforWinsockWindows7.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 afd.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.