What is a .ATT File And How To Open It (Guide)

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Have you downloaded a file with .att extension, but you are not sure what it is? You most likely know what the file is, but you might be unsure on how to open it. Fear not, in this article we will show you how to easily open the .att file in few simple steps on various systems.

What is a .ATT file?

The file extension .ATT is from Web Form Post Data File.This web related file is in binary format.

What to know

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

How to open a .ATT file?

Below you can find an easy to understand, step-by-step guide to open the .ATT file on your operating system/device.

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

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

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

Step 2

Step 2: Locating your .ATT 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 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 Microsoft Notepad software you have downloaded. Choose your software and click on “OK”. Congratulations! You have opened your file on Windows.

Still cannot open the .ATT file?

If you are still unable to open the .ATT file, it might be because you are trying to open the wrong one. There are many similar file extensions that look like the .ATT file.att – Alphacam. 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 .ATT file with the Microsoft Notepad program on Windows.