Microsoft EAPHost Service – EAPSVC.DLL

Eapsvc.dll is a Windows Vista operating system file. You'll find this file in your Windows\System32 folder. You may see it described as "Microsoft EAPHost Service". This stands for "Extensible Authentication Protocol Host". Files called eapphost.dll and eappprxy.dll will also appear on your system.

EAPHost is a Microsoft Windows Networking component that provides an Extensible Authentication Protocol infrastructure for the authentication of "supplicant" protocol implementations such as 802.1X and Point-to-Point (PPP). The EAPHost APIs enable applications to authenticate using the EAPHost service, and provide a template for the development of conformant authentication methods for use with EAPHost.

This was first built into Windows 2000/XP/Windows Server 2003 but was revamped for Windows Vista. Unless these files are causing problems, we'd recommend leaving them in place.

You'll find more information at http://msdn2.microsoft.com/EN-US/library/aa364249.aspx.

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