A daily updated filename extension database!

HXH file extension

The table below provides useful information about the .hxh file extension. It answers questions such as:

  • What is the .hxh file?
  • What program do I need to open a .hxh file?
  • How can the .hxh file be opened, edited or printed?
  • How can I convert .hxh files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ Microsoft Help 2 Merged TOC

HXH file is a Microsoft Help 2 Merged TOC. Microsoft Help 2.x is a proprietary format for online help files, developed by Microsoft and first released in 2001 as a help system for Visual Studio .NET (2002) and MSDN Library.
Category: Data files
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
HXH aliases:
HXH related links:
HXH related extensions:
Windows Help Content

Windows Help File

Compiled HTML Help

MS Help 2 Compiled Help

Windows Help Full-Text Search Index

Windows Help Full Text Group File

HTML Help Collection

Help and Manual eBook Template

Help and Manual Print Manual Template

Help and Manual Viewer Template

Other types of files may also use the .hxh file extension.

🚫 The .hxh file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

gxh, hch, hdh, hh, hsh, hx, hxb, hxg, hxm, hxn, hxt, txh

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

General CADD Pro Hatch
Visual Studio HShader Data
Descent 2 Resource Modification
Microsoft IIS Metabase Hash File
General CADD Hatch
Hexagon 3D Model
Haxe Source Code
FM-ONE Host Side Bootcontrol Data
MS Help 2 Project ToC
QCTest Data

🔴 Can't open a .hxh file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .hxh file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .hxh file extension, write to us!

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