What is a .ARX File And How To Open It – Autodesk (Easy Guide)

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Have you came across a file with the .arx extension, but it is a file you have never seen before? Perhaps you know what the file is, but you simply don’t know how to open it. That’s why we have made this article! You will learn how to open the .arx file extension on various systems, what it is and how to work with it.

What is a .ARX file?

The file extension .ARX comes from AutoCAD Runtime Extension File. The creator of this file extension is Autodesk. This plugin related file is in binary format.

What to know

There is currently 1 software that can open the .arx file on 1 platform.

How to open a .ARX file?

In this part of the article we will show you how to open the .ARX file on various operating systems.

How to open a .ARX file on Windows (7, 8, 10)

Below you can see a visual guide on how to open the .arx file on Windows in 4 easy steps.

1. In the first step you need to download the Autodesk AutoCAD 2020 software. You will be using this software in order to open the file.

Step 2

Step 2: Locating your .ARX file

2. In the second step you need to locate the downloaded file. If you don’t remember where you have downloaded your file to, you should check your /download/ folder as it usually gets automatically saved there.

Step 3

Step 3: Choose “Open with”

3. In the third step right click on your file and choose “Open with”.

Step 4

Step 4: Choose the software and click ok

4. In the fourth step, after clicking “Open with”, you should see the Autodesk AutoCAD 2020 software that you have downloaded. Choose your software and click on “OK”. Congratulations! You have opened your file on Windows.

Still cannot open the .ARX file?

If you cannot open the .ARX file, it is entirely possible that you are trying to open the wrong file. The .ARX file extension is similar to other file extensions such as: .arxml – AUTOSAR, .as – Adobe Systems, .as – Apple, .as – Andreas Jonsson, .as2 – Promethean. You might be trying to open one of them. Please recheck the file extension again.


In this article you have learned how to open the .ARX file with the Autodesk AutoCAD 2020 program on Windows.