What is a .CUS File And How To Open It – Autodesk (Visual Guide)

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Have you came across a file with the .cus 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. Thanks to this easy guide you will be able to find out what .cus file extension is, how to open it and how to work with it.

What is a .CUS file?

The .CUS file extension is AutoCAD Custom Dictionary File. The development of this file was done by Autodesk. The file has the text format, and it is a settings related file.

What to know

There are currently 3 software that can open the .cus file on 1 platform.

How to open a .CUS file?

Below we have written a comprehensive guide on how to open the .CUS file on various operating systems.

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

We have written below an easy-to-understand guide on how to open the .cus file on Windows in 4 easy steps.

1. The first step is to download the Autodesk AutoCAD 2020 software. You will be using this software in order to open the file. You can also use Autodesk AutoCAD 2020, Microsoft Notepad and Microsoft WordPad software.

Step 2

Step 2: Locating your .CUS file

2. In the second step you need to locate the downloaded file. The file can be usually found in your /download/ folder if you don’t remember where you have downloaded it to.

Step 3

Step 3: Choose “Open with”

3. In the third step, after locating your file, right click on it and click “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 .CUS file?

If you cannot open the .CUS file, it is entirely possible that you are trying to open the wrong file. There are many similar file extensions that look like the .CUS file.customdestinations-ms – Microsoft, .cut – Dr. Halo Bitmap Image File, .cv – Microsoft, .cv5 – ACD Systems, .cva – Hewlett-Packard. 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 .CUS file with the Autodesk AutoCAD 2020, Microsoft Notepad, Microsoft WordPad programs on Windows.