Extensible Authentication Protocol (Eaphost) Service Defaults in Windows 10

The Extensible Authentication Protocol (EAP) service provides network authentication in such scenarios as 802.1x wired and wireless, VPN, and Network Access Protection (NAP). EAP also provides application programming interfaces (APIs) that are used by network access clients, including wireless and VPN clients, during the authentication process. If you disable this service, your computer is prevented from accessing networks that require EAP authentication.

Default Settings

Startup type:Manual
Display name:Extensible Authentication Protocol
Service name:Eaphost
Service type:share
Error control:normal
Object:localSystem
Path:%SystemRoot%\System32\svchost.exe -k netsvcs
File:%SystemRoot%\System32\eapsvc.dll
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Eaphost
Privileges:
  • SeTcbPrivilege
  • SeDebugPrivilege
  • SeImpersonatePrivilege

Default Behavior

Extensible Authentication Protocol is a Win32 service. In Windows 10 it is starting only if the user, an application or another service starts it. When the Extensible Authentication Protocol service is started, it is running as localSystem in a shared process of svchost.exe along with other services. If Extensible Authentication Protocol fails to start, the failure details are being recorded into Event Log. Then Windows 10 will start up and notify the user that the Eaphost service has failed to start due to the error.

Dependencies

Extensible Authentication Protocol cannot be started under any conditions, if the following services are disabled, deleted or working improperly:

While Extensible Authentication Protocol is stopped, the Wired AutoConfig service cannot be launched.

Restore Default Startup Configuration for Extensible Authentication Protocol

1. Select your Windows 10 edition and release, and then click Download.

2. Save the Win10_Eaphost_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The Eaphost service is using the eapsvc.dll file that is located in the %WinDir%\System32 folder. If the file is changed, damaged or deleted, you can restore its original version from Windows 10 installation media.