File Extension/IDX
alphabetical list of extensions

File extension .IDX

Description of the problem
If you have on your computer a .IDX file that you cannot open, you are in exactly the same situation as thousands of other people who have similar problems with this or any other unknown file.

There may be several reasons why you cannot open the file with .IDX extension. Directly on this website you can find a solution of the most common problem with the .IDX file – that you do not have on your computer the appropriate program to open the file.
Solution
From the list below, select the appropriate program, install it and double click on the icon of a file that did not want to open - the problem with the .IDX file extension should be solved. However, if this does not happen, go back to the website to learn about other possible causes of the error, which have been described at the bottom of the website.
Category
Misc Files
Developer
N/A
Popularity
StarStarStarStar
File name: Index file
Programs that will open this file:
Windows
Windows
Aid4Mail Aid4Mail
ArcGIS for Desktop Basic (ArcView) ArcGIS for Desktop Basic (ArcView)
Forte Agent Forte Agent
ICQ ICQ
LaTeX LaTeX
Norton SystemWorks Norton SystemWorks
PocoMail PocoMail
Pro/Engineer Pro/Engineer
Quicken Quicken
ROSE Online ROSE Online
Visual FoxPro Visual FoxPro
Visual Objects Visual Objects
VobSub VobSub
WordPerfect Office WordPerfect Office
Mac OS
Mac OS
Quicken Essentials Quicken Essentials
Category
Data Files
Developer
N/A
Popularity
StarStarStar
File name: HMI Historical Log Index File
Programs that will open this file:
Windows
Windows
InTouch InTouch
ReportBuilder ReportBuilder
Category
Text Files
Developer
N/A
Popularity
StarStarStar
File name: Outlook Express Mailbox Index File
Programs that will open this file:
Windows
Windows
Outlook Express Outlook Express
Category
Data Files
Developer
VDO Dayton
Popularity
StarStarStar
File name: Navigation POI File
Programs that will open this file:
Windows
Windows
VDO Dayton device VDO Dayton device
Remember!
The .IDX file extension can correspond to several not related file formats. If there is more than one file format with the .IDX extension, you will probably find most of them at this website. Remember that you need to download a program to support a particular file type. So first look through the entire contents of the website to select a program to support just the file you have.

Other possible reasons why your .IDX file does not want to open

In addition to the problem described above, i.e. the lack of the appropriate application to support the .IDX file, there may be several reasons that cause problems with opening and operation of the data format:

1. Incorrect version of the installed application

A quite common problem is the lack of application in the appropriate version. Even if you have an application, with the help of which you should open the .IDX file, you may have a problem with it because of its version. Perhaps in previous versions the application has not yet supported the .IDX file, so download the update and check again.

2. Incorrect .IDX file association with the program

If you have already installed the appropriate application, and it is the correct version, the file may not open correctly, because the operating system does not have information that this program supports the file. So you need to "show" which program the computer should use. To do this:

  • Right-click the .IDX file
  • Go to the "Open with" - then "Choose default program ..."
  • Locate the appropriate application
  • Click "OK"

3. The file is corrupt

It also happens that the file you want to open is corrupt and therefore there is no such possibility. In this situation, you should find its different version, or ask a person from whom you got, to send it again.