Editing Browser Helper Object (section)

{{Short description|Plug-in module for Internet Explorer}}
[[File:Am addon manager.png|right|thumb|Add-on Manager from [[Windows XP]] SP2 Internet Explorer]]
A '''Browser Helper Object''' ('''BHO''') is a [[Library (computer science)|DLL]] [[Module (programming)|module]] designed as a [[Plug-in (computing)|plugin]] for the [[Microsoft]] [[Internet Explorer]] [[web browser]] to provide added functionality. BHOs were introduced in October 1997 with the release of [[Internet Explorer 4|version 4]] of Internet Explorer. Most BHOs are loaded once by each new instance of Internet Explorer. However, in the case of [[Windows Explorer]], a new instance is launched for each window.

BHOs are still supported as of Windows 10, through [[Internet Explorer 11]], while BHOs are not supported in [[Microsoft Edge (series of web browsers)|Microsoft Edge]].