File Extension Library

‹ .HCF | .HELPINDEX ›

.HDX File Extension

  • Developer by: Autodesk
  • Category: Misc Files
  • Format: Binary

What are .HDX files and how to open them?

Can't open .HDX file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .HDX file.

What is a .HDX file extension?

.HDX file extension is created by Autodesk. .HDX has been classified as Misc Files. The format of .HDX file is Binary.

.HDX is Delphi MultiHelp Index File

Help documentation file used by older versions of AutoCAD design software; uses the filename ACAD.HDX and supplies an index for an associated ACAD.HLP (.HLP) file; not used by recent versions of AutoCAD.

List of all softwares that can open the Delphi MultiHelp Index File
Windows
Autodesk AutoCAD 2018

How to fix problems with .HDX files

  1. You need to update the application that you normally use to open .HDX files. Only the latest version of the software supports the current .HDX file format
  2. You need to check the .HDX file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)
AC.MSK.SU