FWDN file format description

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

1 filename extension(s) found in our database.

.fwdn - File Warden Data

The FWDN data files are related to File Warden. The FWDN file is a File Warden Data. File Warden is a tool for Microsoft Windows developed by Ziff-Davis Media. The File Warden seems to be no longer supported.

File Warden
Data files
- / -
File Warden Data related extensions:
SPEFO Stellar Spectra Analysis Data
SolidWorks Surface Finish Style
SolidWorks Assembly Document
Folder Lock Wallet File
Sharkport Saved Game
SpyBot Search and Destroy SBB Data

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

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

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

fdn, fwd, fwn, wdn

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

FreeWave Network Data
AutoCAD Electrical Project Terminal Numbering Data
MODFLOW Drawdown Data
Bentley InRoads Survey Field Book
IMail Server Forwarded Message
RollerCoaster Tycoon 3 Fireworks Display Data

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 .fwdn file format, then write to us!

DataTypes.net >> FWDN file