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Basic information about HXD file

When there is a problem with opening files with the file extension HXD（*.HXD or *.hxd）, you do not need a computer expert. In most cases, using the helpful suggestions of experts contained in our website as well as appropriate programs, you can solve the problem with the HXD file yourself.

There are 1 file types using the HXD file extension in our database. In the further part of this page, you will find detail information about all the HXD file with their brief description and a list of programs that support HXD file sorted by operating systems. The table below provides useful information about the HXD file extension. It answers questions such as:
  • What is the HXD file?
  • How to open a HXD file?
  • What programs do I need to open a HXD file?
  • What programs help to create and edit a HXD file?
  • How to convert HXD files to another file format?
  • How to convert another files to HXD file format?


1.Detail information about HXD file extension: Microsoft Help Validator

File type Microsoft Help Validator Category Misc Files
Developer Microsoft Corporation File format N/A
Description HXD file is a Microsoft Help Validator developed by Microsoft Corporation. HXD filename suffix is mostly used for Microsoft Help Validator files. Microsoft Corporation defined the Microsoft Help Validator format standard. HXD file format is compatible with software that can be installed on Windows system platform. Files with HXD extension are categorized as Various Files files. The Various Files subset comprises 3591 various file formats. The most popular program for handling HXD files is Microsoft Windows, but users can choose among 1 different programs that support this file format. Microsoft Windows software was developed by Microsoft Corporation, and on its official website you may find more information about HXD files or the Microsoft Windows software program.
Software programs that will open, edit or convert HXD files

Windows		 Microsoft Visual Studio
Microsoft Windows



Can't open a HXD file?

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

”Can't open this file: example.HXD”。

To open this file, you install one of the applications from the list of software programs that you found here, you should be able to open, edit or convert the file with the HXD extension without any issue.


Where I can download the application that support HXD file?

If you do not know where you can download the application from our list, click on the link (which is the name of the program), you will find more information there on the location where to download the required application. Most often they are the websites of software manufacturers.


How to change file associations?

  • Right-click a file with the extension whose association you want to change, and then click "Open With".
  • In the "Open With" dialog box, click the program whith which you want the file to open, or click "Browse" to locate the program that you want.
  • Select the ”Always use the selected program to open this kind of file” check box.


Can I change the extension of HXD 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/open the file. The problem is, changing the file extension does not change the file format. Select a software program from our list and install it on your computer. If the file has not opened correctly, you have to look for a different software program from our list. Sometimes you have to repeat the operation several times.


What else may cause problems width open a HXD file?

The reasons for the lack of the ability to open a HXD file on your computer may be at least several. The easiest thing is to find a suitable application installed on your computer, which will open a HXD file. If there is still something wrong, you might want to check:

  • Whether the HXD file is damaged.
  • Whether the HXD file is incorrectly linked in the registry entries.
  • Whether the HXD file extension has been accidentally removed from the Windows registry.
  • Whether the installation of an application that supports the HXD file format is incompletely.
  • Whether the HXD file is infected.
  • Whether the drivers of the equipment used for opening a HXD file are up to date.
  • Whether your computer has enough hardware resources to open a HXD file.

If the HXD file still not working with your software after eliminating the above shortcomings? That means that the problem is more complex and requires the help of a specialist.