.HELP File

.help is Mac OS X Help Book

Key Features: .HELP File Extension

Features	Description
File Extension	.help
Format	Binary
Created by	Apple
Category	System

What is an .HELP file?

File used by Help Viewer, a help documentation viewer included with Mac OS X; contains a bundle of documents, which may include HTML and CSS files as well as indexing information; commonly used for Mac OS X application help documentation.

Help books may be localized for different languages. For example, a help book may include subdirectories for English (e.g., /English.lproj/ directory) or Spanish (e.g., /Spanish.lproj/ directory) translations.

HELP files are commonly included within Mac OS X application bundles (.APP files).

Apple

System

Binary

How to solve problems with HELP files

Associate the HELP file extension with the correct application. On :
Windows: Right click on any HELP file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.HELP files". Mac: Right click (or Ctrl-click) the HELP file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
Update your software that should actually open .HELP is Mac OS X Help Book. Because only the current version supports the latest HELP file format. Search, therefore, e.g. on the Apple manufacturer website after an available .HELP is Mac OS X Help Book update.
To make sure that your HELP file is not corrupted or virus-infected, get the file again and scan it with antivirus software.