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Dynamic Link Library
File type: Dangerous and malicious file, System file, Program executable file
Files with dll file extensions can be commonly found as dynamic link libraries for Microsoft Windows systems and apps. These files act as modules with additional runtime routines or data.
Found 5 different file type records with the same dll filename suffix.
File type category:
Dangerous and malicious file
System file
Program executable file
Date updated: December 31, 2024
File extension dll is commonly used for so-called dynamic-link libraries, modules containing data, and other functions that can be linked to another module, such as executables.
Many Windows apps and even Windows use .dll files to store runtime routines. You can find who created any DLL file by right-clicking on the file and choosing Properties and then selecting the Version tab.
DLL format generally has two functions, i.e., exported functions and internal functions.
Last but not least, some .dll files may also contain program icons.
Various viruses and malicious programs often inject .dll files to infect computers when executed. So always be mindful when executing unknown programs.
MIME types:
application/x-msdownload
application/x-msdos-program
You cannot open or access .dll files manually; you would have to decompile them using some IDE before you can access the data.
Some programs can be used to explore .dll files and extract icons, but that's it.
DLL format generally is not suitable to be converted to anything else. However, some dll files contain icons that can be extracted with a suitable program.
Software applications that can open dll files:
Microsoft Windows
Multiplatform
Software applications that can edit dll files:
Multiplatform
Software capable of saving dll files:
Multiplatform
Programs for viewing dll files:
Microsoft Windows
Multiplatform
Software apps that create dll files:
Multiplatform
Software apps that import dll files:
Multiplatform
Software apps that export dll files:
Microsoft Windows
Software apps that extract dll files:
Microsoft Windows
Software applications that handle other tasks involving dll files:
Microsoft Windows
Apple macOS / Mac OS X
Multiplatform
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File type category:
Ransomware encrypted file
Date updated: November 14, 2016
File extension dll seems to be also related to a ransomware encountered first in November 2016. Much like other nefarious ransomware, it encrypts users files and changes the original suffix and demands a ransom from the user for the decryption keys.
You will need a proper decryptor to reocver the original files.
Unless you decrypt the files first, there is really no way how to convert the originals.
File type category:
Settings, options, themes or skins file
Date updated: March 24, 2024
The dll file extension is associated with the Google Chrome, a web browser for Windows, Linux, Mac OS X (macOS), iOS and Android operating systems.
The dll file stores theme package.
The dll file extension was replaced by the crx.
Use Google Chrome to open *.dll theme files.
Probably cannot be converted to anything else.
Programs for viewing dll files:
Microsoft Windows
Software apps that manage or store settings in dll files:
Microsoft Windows
Apple macOS / Mac OS X
Linux/Unix
File type category:
Internet related file
Date updated: June 27, 2025
The dll file extension is used for web pages dynamically generated by Microsoft IIS Web server.
The dll file contains server-side scripts, such as Perl or VB scripts that generate the HTML for the Web page.
The dll file extension is much more used for Dynamic Link Library files.
Use internet browser to view content of *.dll dynamic web page files.
Compatible tools are able to export *.dll web pages to other formats.
Software applications that can open dll files:
Microsoft Windows
Programs for viewing dll files:
Microsoft Windows
Apple macOS / Mac OS X
Software apps that create dll files:
Microsoft Windows
Software apps that print dll files:
Microsoft Windows
Apple macOS / Mac OS X
File type category:
Various data file
Date updated: April 30, 2018
Record marked as obsolete and not updated for a long time.
The dll file extension is associated with the Virtumonde / Vundo Trojan malware.
Vundo (also known as VirtuMonde and VirtuMundo) is a malicious software application that combines both adware and trojan characteristics.
Vundo is wide spread today and is probably one of the hardest programs to get rid of. Once installed, Vundo downloads and displays pop-up advertisements that often promote questionable computer-enhancement programs or fake anti-virus or anti-spyware utilities.
Lately, Vundo has been advertising several rogue programs called WinFixer2005, WinAntiVirus Pro 2006, WinAntiSpyware and RazeSpyware.
Software applications that handle other tasks involving dll files:
Microsoft Windows
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