Windows 10 Services

Extensible Authentication Protocol - Windows 10 Service

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.

This service also exists in Windows 7, 8, Vista and XP.

Startup Type

Windows 10 version Home Pro Education Enterprise
1507 Manual Manual Manual Manual
1511 Manual Manual Manual Manual
1607 Manual Manual Manual Manual
1703 Manual Manual Manual Manual
1709 Manual Manual Manual Manual

Default Properties

Display name:Extensible Authentication Protocol
Service name:Eaphost
Path:%WinDir%\System32\svchost.exe -k netsvcs -p
Error control:normal
  • SeTcbPrivilege
  • SeDebugPrivilege
  • SeImpersonatePrivilege

Default Behavior

The Extensible Authentication Protocol service is running as localSystem in a shared process of svchost.exe. Other services might run in the same process. If Extensible Authentication Protocol fails to start, the error is logged. Windows 10 startup proceeds, but a message box is displayed informing you that the Eaphost service has failed to start.


Extensible Authentication Protocol is unable to start, if at least one of the following services is stopped or disabled:

If Extensible Authentication Protocol is stopped, the Wired AutoConfig service fails to start and initialize.

Restore Default Startup Type for Extensible Authentication Protocol

Automated Restore

1. Select your Windows 10 edition and release, and then click on the Download button below.

2. Save the RestoreExtensibleAuthenticationProtocolWindows10.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 eapsvc.dll file exists in the %WinDir%\System32 folder. If this file is missing you can try to restore it from your Windows 10 installation media.