What is a .BAK File And How To Open It – The Sage Group (Easy Guide)

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Have you came across a file with the .bak 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. In this article we will explain what .bak file extension is, how to open it and how to work with it.

What is a .BAK file?

The file extension .BAK comes from ACT! Backup File. This file extension belongs to the developer The Sage Group. The file has the binary format, and it is a backup file.

What to know

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

How to open a .BAK file?

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

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

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

1. The first step is to download the Swiftpage Act! software. You will be using this software in order to open the file. You can also use Swiftpage Act! software.

Step 2

Step 2: Locating your .BAK file

2. In the second step you need to locate 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 Swiftpage Act! 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 .BAK file?

If you are still unable to open the .BAK file, it might be because you are trying to open the wrong one. The .BAK file extension is similar to other file extensions such as: .bak – Bookmarks Backup File, .bak – MakeMusic, .bak – Wondershare, .bak – Re-Logic, .bak – Microsoft. 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 .BAK file with the Swiftpage Act! program on Windows.