Ancillary Function Driver for Winsock (AFD) Service Defaults in Windows 8

Ancillary Function Driver for Winsock.

Default Settings

Startup type:System
Display name:Ancillary Function Driver for Winsock
Service name:AFD
Service type:kernel
Error control:normal
Group:PNP_TDI
Path:%SystemRoot%\system32\drivers\afd.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\AFD

Default Behavior

The Ancillary Function Driver for Winsock service is a kernel device driver. In Windows 8 it is being loaded and initialized at Kernel initialization. If Ancillary Function Driver for Winsock fails to start, the error details are added to Windows 8 error log. When the operating system startup is complete, the user is being notified that the AFD service hasn't been started.

Dependencies

All the services listed below will not start if Ancillary Function Driver for Winsock is disabled:

Restore Default Startup Configuration for Ancillary Function Driver for Winsock

1. Select your Windows 8 edition and update pack, and then click Download.

2. Save the Win8_AFD_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The AFD service is using the afd.sys file that is located in the %WinDir%\system32\drivers folder. If the file is corrupted or deleted, you can put it back in there.