Basic information about X40 file

When there is a problem with opening files with the file extension X40（*.X40 or *.x40）, 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 X40 file yourself.

There are 1 file types using the X40 file extension in our database. In the further part of this page, you will find detail information about all the X40 file with their brief description and a list of programs that support X40 file sorted by operating systems. The table below provides useful information about the X40 file extension. It answers questions such as:
  • What is the X40 file?
  • How to open a X40 file?
  • What programs do I need to open a X40 file?
  • What programs help to create and edit a X40 file?
  • How to convert X40 files to another file format?
  • How to convert another files to X40 file format?


1.Detail information about X40 file extension: XtreeGold Dos Help

File type XtreeGold Dos Help Category Page Layout Files
Developer Jeffrey C Johnson (XTree Company) File format N/A
Description X40 file is a XtreeGold Dos Help developed by Jeffrey C Johnson (XTree Company). X40 filename suffix is mostly used for XtreeGold Dos Help files. XtreeGold Dos Help specification was created by Jeffrey C Johnson (XTree Company). Files with X40 extension may be used by programs distributed for Windows platform. X40 file format, along with 574 other file formats, belongs to the Document Files category. The software recommended for managing X40 files is XTreeGold. On the official website of Jeffrey C Johnson (XTree Company) developer not only will you find detailed information about theXTreeGold software, but also about X40 and other supported file formats.
Software programs that will open, edit or convert X40 files

Windows		 XTreeGold



Can't open a X40 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.X40”。

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 X40 extension without any issue.


Where I can download the application that support X40 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 X40 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 X40 file?

The reasons for the lack of the ability to open a X40 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 X40 file. If there is still something wrong, you might want to check:

  • Whether the X40 file is damaged.
  • Whether the X40 file is incorrectly linked in the registry entries.
  • Whether the X40 file extension has been accidentally removed from the Windows registry.
  • Whether the installation of an application that supports the X40 file format is incompletely.
  • Whether the X40 file is infected.
  • Whether the drivers of the equipment used for opening a X40 file are up to date.
  • Whether your computer has enough hardware resources to open a X40 file.

If the X40 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.