DLL Detective file or downloaded data
File type: Various data file
A dld file extension is associated with DLL Detective, a Microsoft Windows tool for monitoring and processing communications between applications and dynamic link libraries (DLLs).
A dld file may also be downloaded data with no fixed internal format. In that case, its contents depend on the source that provided the file.
Found 4 different file type records with the same dld filename suffix.
File type category:
Various data file
Date updated: October 12, 2026
Record marked as obsolete and not updated for a long time.
The dld file extension is used by DLL Detective, a Windows utility that intercepts and processes communications between applications and dynamic link libraries (DLLs). DLD files associated with this software are intended for its internal use rather than as general-purpose documents.
DLD can also be an abbreviation for "download" and may be used for downloaded data. Such a file can contain any type of data, so the extension alone does not identify the file's format or the program that created it.
The DLL Detective format is obsolete. DLL Detective files should therefore be opened with the original Windows software when it is available; downloaded data should be handled by the software or service from which it came.
Open a dld file associated with DLL Detective on Microsoft Windows using DLL Detective. These files may be internal working or data files and may not be intended for direct viewing.
If the file was downloaded, its contents cannot be identified from the dld file extension alone. Use the application or service that supplied it. A text or hexadecimal editor may display raw contents, but it will not necessarily interpret them correctly.
Software applications that handle other tasks involving dld files:
Microsoft Windows
File type category:
Various data file
Date updated: April 9, 2019
The dld file extension is associated with the avast! Antivirus software that allows users to protect their computers with Windows and OS X (macOS), smart phones with Android, etc. against malicious software attacks.
The dld file stores some kind of data used by avast! for internal purposes.
Probably not meant to be accessed by the user.
Probably cannot be converted to anything else.
Software applications that handle other tasks involving dld files:
Microsoft Windows
File type category:
Program executable file
Date updated: October 12, 2026
Campbell Scientific's EdLog programming tools compile a datalogger program into a dld file. The compiled file contains the instructions that the CR10X uses for tasks such as measurement, processing, and data logging.
LoggerNet for Microsoft Windows manages communication with Campbell Scientific dataloggers and can transfer the compiled program to a CR10X. A dld file is a datalogger program, not a normal Windows executable or a human-readable document.
Use LoggerNet on Microsoft Windows to transfer a dld file to a connected CR10X datalogger. The file is not intended to be opened as a document or run directly in Windows.
To inspect or modify the program, use the original EdLog program source and compile it again rather than editing the compiled dld file.
A dld file is a compiled CR10X program and does not have a useful general-purpose conversion format. To make changes, edit the original program in EdLog and compile it again.
Moving the program to a different datalogger platform generally requires recreating or adapting the source program for that platform, rather than converting the dld file directly.
Software applications that can open dld files:
Microsoft Windows
Software applications that can edit dld files:
Microsoft Windows
Software capable of saving dld files:
Microsoft Windows
Software apps that create dld files:
Microsoft Windows
Software applications that handle other tasks involving dld files:
Microsoft Windows
File type category:
Various data file
Date updated: July 21, 2017
Record marked as obsolete and not updated for a long time.
The dld file extension is related to old Lotus 1-2-3, a spreadsheet editing tool for Microsoft Windows, MS-DOS and various other platforms.
The dld file cotnains data.
Probably very old format.
Software apps that create dld files:
Microsoft Windows
Software applications that handle other tasks involving dld files:
Microsoft Windows
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