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


Have you came across a file with the .dll 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. Fear not, in this article we will show you how to easily open the .dll file in few simple steps on various systems.

What is a .DLL file?

The .DLL file extension stands for Dynamic Link Library. The development of this file was done by Microsoft. This system related files is in binary format.

What to know

There are currently 4 software that can open the .dll file on 1 platform.

How to open a .DLL file?

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

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

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

1. The first step is to download the Resource Hacker software. This software will be used for opening the file. Other software that can be used in opening this file is: Microsoft Windows, JetBrains dotPeek, Redgate .NET Reflector and Resource Hacker.

Step 2

Step 2: Locating your .DLL 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 Resource Hacker 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 .DLL file?

If you are still unable to open the .DLL file, it might be because you are trying to open the wrong one. The .DLL file extension is similar to other file extensions such as: .dlm – Akamai, .dlo – Autodesk, .dlr – cebas Visual Technology, .dls – Downloadable Sounds File, .dlt – Institute of Botany, Chinese Academy of Sciences. 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 .DLL file with the Resource Hacker, Microsoft Windows, JetBrains dotPeek, Redgate .NET Reflector programs on Windows.