What is a .COS2 File And How To Open It – Pinnacle Systems

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Have you came across a file with the .cos2 extension and you don’t know what it is? Perhaps you know what the file is, but you simply don’t know how to open it. That’s why you are here! We have made this guide for you to learn more about the .cos2 file extension and how to open it.

What is a .COS2 file?

The file extension .COS2 is from Pinnacle Studio Cache File.The developer of this file extension is Pinnacle Systems. The format of this miscellaneous file is binary.

What to know

There is currently 1 software that can open the .cos2 file on 1 platform.

How to open a .COS2 file?

In this part of the article we will show you how to open the .COS2 file on various operating systems.

How to open a .COS2 file on Windows (7, 8, 10)

The .cos2 file can be opened in 4 steps on Windows.

1. The first step is to download the Pinnacle Studio software. You will be using this software in order to open the file. Other software that can be used in opening this file is: Pinnacle Studio.

Step 2

Step 2: Locating your .COS2 file

2. The second step is locating 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 right click on your file and choose “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 Pinnacle Studio software you have downloaded. Click on the software and click “OK”. That’s all, now you have opened your file on Windows.

Still cannot open the .COS2 file?

If you cannot open the .COS2 file, it is entirely possible that you are trying to open the wrong file. The .COS2 file extension is similar to other file extensions such as: .cosessiondb – Phase One, .costyle – Phase One, .cot – Lennon McLean, .course – Super Mario ReMaker Course File, .cov – Microsoft. 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 .COS2 file with the Pinnacle Studio program on Windows.