The File Extensions Database


.DLL File Extension

Developer by: Microsoft Category: System Files Format: Binary

What is an .DLL file?

.DLL is Dynamic Link Library

A DLL file is a compiled library that contains a set of procedures and/or drivers that are referenced and executed by a Windows program. It allows multiple programs to access shared functions through common libraries. DLL files are "dynamically linked" into a program at runtime, meaning they are only loaded as needed.

Many DLL files are provided with the Windows operating system, and others are included by Windows programs. They allow various program functions, such as communication with external devices and hard disk input and output. They may also be referenced by Mac cross-platform applications.

Deleting or modifying the contents of a DLL file may cause errors within the program that references the file. For this reason, DLL files generally should not be opened or edited. However, if an application tries to access a dll file that has been corrupted or is missing, that program will no longer work. In this case, installing a new version of the DLL file may be the easiest option.

DLL errors in Windows?

DLL-Files.com Client can fix DLL errors.

Common DLL Filenames

mfc42u.dll - A Microsoft Foundation Class (MFC) library required by some Windows programs to run. This DLL is included with Windows XP, Windows Vista, and Windows 7 and is most often located in the C:\Windows\System32\ directory. If you try to open a program and Windows reports that you're missing mfc42u.dll, likely your Windows installation has been damaged. You can use a system restore point or your factory system repair disc to fix the issue. Other related files include mfc42u.dll, mfc40.dll, and mfc40u.dll.

mfc80u.dll - An MFC library required by some Windows programs created with Visual C++ 2005. If you're missing this file, you can install the Microsoft Visual C++ 2005 Redistributable Package to install it. Programs that use this DLL generally install it because it is not included with Windows by default. Other DLLs installed with the package include msvcr80.dll, msvcm80.dll, msvcp80.dll, mfc80.dll, mfcmifc80.dll, and mfcm80.dll.

mfc90u.dll - An MFC library required by some Windows programs created with Visual C++ 2008. If you're missing this file, you can install the Microsoft Visual C++ 2008 Redistributable Package to install it. Programs that use this DLL generally install it because it is not included with Windows by default. Other DLLs installed with the package include msvcr90.dll, msvcm90.dll, msvcp90.dll, mfc90.dll, mfcmifc90.dll, and mfcm90.dll.

mfc100u.dll - An MFC library required by some Windows programs created with Visual C++ 2010. If you're missing this file, you can install the Microsoft Visual C++ 2010 Redistributable Package to install it. Programs that use this DLL generally install it because it is not included with Windows by default. Other DLLs installed with the package include msvcr100.dll, msvcm100.dll, msvcp100.dll, mfc100.dll, mfcmifc100.dll, and mfcm100.dll.

Programs that open Dynamic Link Library
Windows
DLL-Files.com Client
Microsoft Windows
Microsoft Visual Studio 2017
Microsoft Visual FoxPro
Resource Hacker
File Type 2 DLL Dynamic Web Page
Category: Web Files

Web page generated dynamically when accessed by a user; may incorporate server-side scripts, such as Perl or VB scripts that generate the HTML for the Web page.

Web pages with DLL file extensions are typically hosted on Microsoft IIS Web servers. The DLL extension must be mapped to the correct scripting engine on the server in order for the page to be processed correctly.

How to solve problems with DLL files

  • Associate the DLL file extension with the correct application. On :
    Windows: Right click on any DLL file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.DLL files". Mac: Right click (or Ctrl-click) the DLL file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .DLL is Dynamic Link Library. Because only the current version supports the latest DLL file format. Search, therefore, e.g. on the Microsoft manufacturer website after an available .DLL is Dynamic Link Library update.
  • To make sure that your DLL file is not corrupted or virus-infected, get the file again and scan it with antivirus software.

Browser by category

3D Image Files Audio Files Backup Files CAD Files Camera Raw Files Compressed Files Data Files Database Files Developer Files Disk Image Files Encoded Files Executable Files Font Files GIS Files Game Files Misc Files Page Layout Files Plugin Files Raster Image Files Settings Files Spreadsheet Files System Files Text Files Vector Image Files Video Files Web Files eBook Files