Windows 8 Services

Ancillary Function Driver for Winsock - Windows 8 Service

Ancillary Function Driver for Winsock.

This service also exists in Windows 10, 7, Vista and XP.

Startup Type

Windows 8 edition Windows 8 Windows 8.1 Windows 8.1 Update 1
Core System System System
Pro System System System
Enterprise System System System

Default Properties

Display name:Ancillary Function Driver for Winsock
Service name:AFD
Error control:normal

Default Behavior

The Ancillary Function Driver for Winsock service is a kernel mode driver. If Ancillary Function Driver for Winsock fails to start, the error is logged. Windows 8 startup proceeds, but a message box is displayed informing you that the AFD service has failed to start.


The following services are unable to start if Ancillary Function Driver for Winsock is stopped:

Restore Default Startup Type of Ancillary Function Driver for Winsock

Automated Restore

1. Select your Windows 8 release and edition, and then click on the Download button below.

2. Save the RestoreAncillaryFunctionDriverforWinsockWindows8.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.

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 8 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.