What is a .OCA File And How To Open It – Microsoft (Guide)

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

What is a .OCA file?

The .OCA file extension comes from Custom Control Library Type File. This file extension belongs to the developer Microsoft. The file is a development related file.

What to know

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

How to open a .OCA file?

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

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

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

1. In the first step you need to download the Microsoft Visual Studio software. You will be using this software in order to open the file. You can also use Microsoft Visual Studio software.

Step 2

Step 2: Locating your .OCA 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 Microsoft Visual Studio software that you have downloaded. Click on the software and click “OK”. Congratulations! You have opened your file on Windows.

Still cannot open the .OCA file?

If you are still unable to open the .OCA file, it might be because you are trying to open the wrong one. There are many similar file extensions that look like the .OCA file.occ – Oceanic Consulting Corporation, .ocd – OCAD, .oce – Oracle, .oci – Portalgraphics, .ocimf – OCIMF. 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 .OCA file with the Microsoft Visual Studio program on Windows.