>> D1 file

D1 file format description

Many people share .d1 files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .d1 file can be edited, converted or printed with. On this page, we try to provide assistance for handling .d1 files.

1 filename extension(s) found in our database.

.d1 - Progress OpenEdge Database

The D1 data files are related to OpenEdge. D1 file is a Progress OpenEdge Database. Progress OpenEdge is a complete development platform for building dynamic multi-language applications for secure deployment across any platform, any mobile device, and any Cloud.

Data files
- / -
Progress OpenEdge Database related extensions:
Progress OpenEdge ActiveX Properties
OpenEdge Web Services Application Descriptor

Naturally, other applications may also use the .d1 file extension. Even harmful programs can create .d1 files. Be especially cautious with .d1 files coming from an unknown source!

Can't open a .d1 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 .d1 file extension is often given incorrectly!

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

c1, dl, dw, s1, x1

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

David Whittaker Format Music
DesignWorkshop Data
Freescale S-record File
FLEXnet Manager Debug Log
X1 Saved Search
POV-Ray Include File

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, 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 .d1 file format, then write to us!