DDU file format description

Many people share .ddu files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .ddu file can be edited, converted or printed with. On this page, we try to provide assistance for handling .ddu files.

1 filename extension(s) found in our database.

.ddu - MAP dlms User Association Document

The DDU data files are related to Landis+Gyr MAP. The DDU file is a MAP dlms User Association Document. The Landis+Gyr MAP Service Tool was developed to support the dialog meters. It is able to communicate with all modern electronic meters from Landis+Gyr and also with many units from other manufacturers, which comply with the standards according to dlms or IEC 62056-21 (formerly IEC 1107).

Landis+Gyr MAP
Data files
- / -
MAP dlms User Association Document related extensions:
JobClock.NET TimeSummit Data
Eagle Library Intermediate Data
ProGen 2 Protocol Data
Pure-FTPd Quota Data
MDSS Electronic Laboratory Report
FlexiMusic Zipper Data

Naturally, other applications may also use the .ddu file extension. Even harmful programs can create .ddu files. Be especially cautious with .ddu files coming from an unknown source!

Can't open a .ddu file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .ddu file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

cdu, dcu, dd, ddi, ddj, ddy, deu, dfu, dru, dsu, dud, dxu, fdu, sdu, vdu

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

DDwin Project
ProWorx NXT Data Setup File
Unreal Engine German Language Data
Diskdupe Disk Image
WinDev Library Components Data
DataFlex Data Dictionary

Operating systems

DataTypes.net currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.


If you have useful information about the .ddu file format, then write to us!

DataTypes.net >> DDU file