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File type: DLL

Why can’t I open .dll files?

Files with the extension DLL are Dynamic Link Library files. Essentially, these files are libraries of information that are accessed by other applications. They are a critical part of the Windows operating system.
These files cannot be opened on their own as they are designed to be accessed only by executable files - that is other programs and applications.

More on DLL file from Wikipedia

What should I do with the DLL file I was trying to open?

Most users will never see, or need to open DLL files. If there is a folder that contains DLL files, it is best to leave it unaltered.


From Wikipedia, the free encyclopedia

Dynamic-link library (also written without the hyphen), or DLL, is Microsoft's implementation of the shared library concept in the Microsoft Windows and OS/2 operating systems. These libraries usually have the file extension DLL, OCX (for libraries containing ActiveX controls), or DRV (for legacy system drivers). The file formats for DLLs are the same as for Windows EXE files — that is, Portable Executable (PE) for 32-bit and 64-bit Windows, and New Executable (NE) for 16-bit Windows. As with EXEs, DLLs can contain code, data, and resources, in any combination.

In the broader sense of the term, any data file with the same file format can be called a resource DLL. Examples of such DLLs include icon libraries, sometimes having the extension ICL, and font files, having the extensions FON and FOT.

More on Wikipedia

DLL Icon
Filename extension.dll or .DLL
Internet media typeapplication/x-msdownload
Uniform Type
Developed byMicrosoft
Container forShared library

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