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Basic information about ALT file

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

There are 4 file types using the ALT file extension in our database. In the further part of this page, you will find detail information about all the ALT file with their brief description and a list of programs that support ALT file sorted by operating systems. The table below provides useful information about the ALT file extension. It answers questions such as:
  • What is the ALT file?
  • How to open a ALT file?
  • What programs do I need to open a ALT file?
  • What programs help to create and edit a ALT file?
  • How to convert ALT files to another file format?
  • How to convert another files to ALT file format?


1.Detail information about ALT file extension: Valve Steam File

File type Valve Steam File Category Data Files
Developer N/A File format N/A
Description ALT file is a Valve Steam File. The alt file extension is associated with Corel WordPerfect, a word processing program, developed by Corel Corporation. Corel Word Perfect is part of Corel Word Perfect Office suite.

The alt files contain menu library for Corel WordPerfect.
Software programs that will open, edit or convert ALT files

Windows		 Steam

macOS		 Steam for Mac

Linux		 Steam for Linux


2.Detail information about ALT file extension: Dynamics AX Temporary File

File type Dynamics AX Temporary File Category Misc Files
Developer Microsoft File format N/A
Description ALT file is a Dynamics AX Temporary File developed by Microsoft.
Software programs that will open, edit or convert ALT files

Windows		 Microsoft Dynamics AX


3.Detail information about ALT file extension: Corel WordPerfect Menu Library

File type Corel WordPerfect Menu Library Category Data Files
Developer N/A File format N/A
Description ALT file is a Corel WordPerfect Menu Library.
Software programs that will open, edit or convert ALT files

Windows		 Corel WordPerfect
Corel WordPerfect
Corel WordPerfect Office


4.Detail information about ALT file extension: ReliaSoft ALTA Related Data

File type ReliaSoft ALTA Related Data Category Data Files
Developer N/A File format N/A
Description ALT file is a ReliaSoft ALTA Related Data.
Software programs that will open, edit or convert ALT files

Windows		 ALTA



Can't open a ALT 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.ALT”。

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 ALT extension without any issue.


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

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

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

If the ALT 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.