What is HLP? What Opens a HLP? File Format List from WhatIs.com

File Extension

HLP File Format

Windows Help file

HLP is a file extension for a help file format used by Microsoft Windows. HLP files contain documentation for the use and troubleshooting of Windows and its programs.

MIME type: application/winhlp, application/x-helpfile, application/x-winhelp, zz-application/zz-winassoc-hlp


Learn more about HLP files:

See how to add support for legacy help file WINHLP.EXE IN Windows Vista by Serdar Yegulalp at Search Enterprise Desktop.

Look for more help with HLP-related questions at IT Knowledge Exchange.

This was last updated in August 2010
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