File Extension DLL

  • Full name
    Dynamic Link Library Format
  • Developer
  • Popularity
Have you encountered a problem with a DLL file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a DLL file here. In the further part of this page we have added a list of programs that should open your DLL file. It is enough you choose a proper application for your operating system, download and install it.


DLL files are so-called dynamic link library files, which are provided under Windows by the operating system or other programs.

They contain program parts, e.g. Functions or data that can be dynamically reloaded and used by programs. Many drivers also use these files.

Many DLL files are available system-wide and are used by numerous programs. This reduces memory usage as different programs can use the same file and functionality.

It is generally not recommended to delete or modify files with the extension dll, as this can endanger the function of programs or even Windows itself. Even duplicate DLL files should not be touched because different versions of the same file may exist. However, existing DLL files in the directory of a program can be deleted during an uninstall.

Information about the DLL file can be obtained via the context menu (right-click).

It can create and modify DLL files with development environments like Microsoft Visual Studio

Programs which can open a DLL file

How to open a DLL file? Advice and guidance

Absolutely most often appearing reason that prevents you from opening the DLL file is the lack of a proper application to support it in your operating system. It is notably the first thing you need to address. When one of the programs to support a DLL file from the list is already installed, you can try to rerun the file. The system should display a message asking you to choose a primary application to support DLL files. At this point we are looking for disk space where the application was installed in and we can link it with a DLL file. Since then, our operating system will use the selected program to support all DLL files.

Other issues

Despite the described problem with DLL there may be many more problems. If the existing operations were not effective, get involved with the following matters:

- verify that the DLL file is not damaged and that it has been downloaded or copied in whole
- verify that the file has a file extension that has not been intentionally changed (for example, if it do not contain other information than its extension suggests)
- make sure again whether the DLL file type is linked in the operating system with a proper program
- make sure that the file is not infected with a virus and you have up to date software and drivers.

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