What is a .CDO File And How To Open It – NCH Software (Easy Steps)

Table of Contents


While downloading files, you might have downloaded a file with the .cdo extension. You most likely know what the file is, but you might be unsure on how to open it. That’s why we have made this article! You will learn how to open the .cdo file extension on various systems, what it is and how to work with it.

What is a .CDO file?

The file extension .CDO comes from Crescendo Music Notation File. This file extension was developed by NCH Software. This audio related file is in binary format.

What to know

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

How to open a .CDO file?

Below we will show you a step-by-step guide on how to open the .CDO file on various operating systems.

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

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

1. In the first step you need to download the NCH Crescendo Music Notation Editor software. You will be using this software in order to open the file. Other software that can be used in opening this file is: NCH Crescendo Music Notation Editor.

Step 2

Step 2: Locating your .CDO file

2. The second step is locating 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, after locating your file, right click on it and click “Open with”.

Step 4

Step 4: Choose the software and click ok

4. After choosing the “Open with” option, you will have an option to choose the NCH Crescendo Music Notation Editor software you have downloaded. Choose your software and click on “OK”. That’s all, now you have opened your file on Windows.

Still cannot open the .CDO file?

If you cannot open the .CDO file, it is entirely possible that you are trying to open the wrong file. The .CDO file extension is similar to other file extensions such as: .cdoc – RIA, .cdoc – Crick Software, .cdp – N3V Games, .cdp – CS Odessa, .cdp – Sony. You might be trying to open the wrong file, please recheck if you are trying to open the right file extension again.


In this article you have learned how to open the .CDO file with the NCH Crescendo Music Notation Editor program on Windows.