What Is DLL File - A Full Guide

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You often install a game or software that does not run and tells you that certain DLL files are missing. Have you ever wondered why it happens? In this article, we are going to clarify your basic concepts about DLL files.

The development of DLL files is a very intelligent implementation of the concept of sharing. The computer scientists who came up with this idea and implemented it were genius people. The DLL files are actually included in the form of libraries used by multiple software at the same time.

What Is a DLL File?

DLL stands for Dynamic-Link Library. This library contains data and instruction code that multiple apps and programs can use simultaneously. You save a significant amount of space by using this technique of sharing a library. Microsoft developed DLL files, and extensions of these files are .DLL, .DRV, and .OCX.

Uses of DLL Files

  • Responsible for Running Windows Operating System

It is a fact that all the Windows OS cannot work without DLL files. You must have seen a huge list of DLL files being installed when installing Windows.

  • Performing Certain Tasks

Each kind of DLL file is developed for performing a certain kind of function, such as Comdlg32 performs the common tasks related to dialog boxes.

  • Running Certain Applications

Most of the applications use DLL files to run; hence, these files are installed at the time of their installation. Your operating system also tells you to install certain DLL files for certain games and software.

Features of DLL Files

  • Shared Libraries

DLL files are shared libraries; hence, multiple programs can use them simultaneously, but this feature also saves you an abundance of space in your computer's RAM and SSD or M2.

  • Modularization

This is a technique in which computer scientists divide the functions of a program into smaller tasks. The final software has multiple functions, but the functions that are being used are active at the moment.

  • Code Reusability

The applications can use the data and code of DLL files as many times as the apps demand them. Multiple apps can use even one piece of code and data at the same time.

Advantages and Disadvantages of DLL Files


Data and instructions inside a single DLL file can be used by multiple apps.

DLL files increase code reusability.

These files save plenty of space in RAM and storage media.

DLL files can be loaded dynamically, meaning the RAM will contain only those DLL files that are being used and remove the others.

The process of installing and deploying DLL files is very easy.


DLL dependency is a demerit of these files in which a DLL uses the function inside another DLL file.

How to Open a DLL File?

Opening DLL files is not recommended because a slight change in the code will corrupt that DLL, and it will not work again at all. However, if you are a technical person and want to open a DLL file that is not being used by your Operating System or apps, you need a Decompiler to open a DLL or Microsoft Windows Visual Studio

  1. Browse the DLL file containing the folder and import the DLL file to the Visual studio.
  2. Here you can edit the codes of that DLL file.

How to Install DLL Files?

  • Automatic Installation

When the Operating System and application software installers are developed, the DLL files are embedded. At the time of installation, these files get extracted and installed automatically. You cannot just double-click them and install them, as these files are not the setups.

  • Manual Installation

You must have noticed that some games and applications warn you that certain DLL files are missing. This is because the games start to work as you install DirectX as it contains DLL files. But for some applications, you have to download DLL files manually and install them.

  1. Note down or copy the DLL file name that you want to install.
  2. Go to the given link https://www.dll-files.com/ and search for that DLL file.
  3. Press the "Download" button to download the DLL file. It might be downloaded in the form of a RAR file.
  4. Extract it and copy-paste it inside the folder of that application that required it.

How to Edit DLL Files?

Decompilers and Windows Visual Studio can be used to edit DLL files. Editing DLL files is never recommended because a small change can corrupt your whole operating system or the apps that were using it. After decompiling, you will get the code of the DLL file. This code will be in a programming language such as C or C++.

Learn more in the complete guide on how to edit DLL files.

How to Fix DLL Errors?

Sometimes we start a game or an app, and it gives you an error that a certain DLL file(s) is missing. It happens when a specific DLL file is missing. Thankfully, you can download the missing DLL files to fix those errors:

  1. Note down the name and path of the DLL file that is missing.
  2. Go to the given link https://www.dll-files.com/ and search for that DLL file.
search for the missing dll file
  1. The "Download" button to download the DLL file when the file is foundress. It will be downloaded in the form of a RAR file.
download the dll file
  1. Extract the RAR file and copy its contents. Paste them inside the folder of that game or app that required it.
extract the rar file
  1. If you know the path from where the DLL file was missing, then paste the DLL at the same location.
copy and paste the dll location
  1. Restart your laptop or computer and enjoy your game or app.

Suppose you are stuck in the error of loading DLL at startup, here are 3 solutions to Fix Error in Loading DLL at Startup.

How to Convert DLL Files?

DLL files can be converted into forms where more technical persons like computer scientists can read them and understand their work. The conversion of DLL files is known as decompilation, and Decompilers are used for it. For example, you can convert a DLL file into a C or a C++ language file.

If you want to convert a DLL File, then you will have to get or purchase a decompiler. We are providing you a link to a decompiler, but we don't recommend converting DLL files. Big companies like Microsoft own DLL files, and most people do not want to mess with their secrets.

How to Recover Deleted or Lost DLL Files?

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This article is a very helpful guide on DLL files. It will not only clarify your concept about DLL files, but it will also tell you the importance of DLL files. Furthermore, the language used is very simple, and you can easily learn the uses, features, and pros and cons of DLL files.

In this article, we have told you the methods for fixing DLL files and installing them. In the end, we have provided you with a free application that can recover your precious deleted files easily. We hope these guidelines will be helpful for you.

People Also Ask

A DLL file has built-in functions that your operating system, games or apps will be performing. These are shared libraries with code and instructions that multiple software use simultaneously, saving the space in your RAM and SSD/M2.

No, sir! You should never delete a DLL file because if you do so then the game or the app using that DLL file will not work. If that DLL file is in the use of your operating system, such as Windows, then you will have problems using some services.

The DLL files provided by Microsoft or other well-known companies are safe. On the other hand, there are sites that have malicious DLL files that cost you your precious data for good.

The reason will be an old version of a game or app. Reboot your computer and your operating system should install that DLL file for you. If not, then we have provided you with the manual process above in this article.