Ancillary Function Driver for Winsock (AFD) Service Defaults in Windows 10
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
Ancillary Function Driver for Winsock is a kernel device driver. In Windows 10 it is starting at Kernel initialization. If Ancillary Function Driver for Winsock fails to start, the failure details are being recorded into Event Log. Then Windows 10 will start up and notify the user that the AFD service has failed to start due to the error.
Dependencies
While Ancillary Function Driver for Winsock is stopped, disabled or working incorrectly, the following services do not start:
Restore Default Startup Configuration of Ancillary Function Driver for Winsock
1. Run the Command Prompt as an administrator.
2. Copy the commands below, paste them into the command window and press ENTER:
sc config AFD start= system
sc start AFD
3. Close the command window and restart the computer.
The AFD service is using the afd.sys file that is located in the C:\Windows\system32\drivers directory. If the file is removed or corrupted, read this article to restore its original version from Windows 10 installation media.