A daily updated filename extension database!

DWN file extension

The table below provides useful information about the .dwn file extension. It answers questions such as:

  • What is the .dwn file?
  • What program do I need to open a .dwn file?
  • How can the .dwn file be opened, edited or printed?
  • How can I convert .dwn files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ Cisco Router Firmware Update

DWN file is a Cisco Router Firmware Update. Cisco Systems develops, manufactures and sells networking hardware, telecommunications equipment and other high-technology services and products.
DWN format description not yet available
Category: Other files
Application: Cisco Routers
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
DWN aliases:
DWN related links:
DWN related extensions:
Cisco Router Unsigned Firmware Image

Other types of files may also use the .dwn file extension.

🚫 The .dwn file extension is often given incorrectly!

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

cwn, dan, den, dnw, dsn, dw, dwb, dwg, dwh, dwj, dwm, fwn, rwn, swn, wdn

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

Proteus Electronics Design
ODBC Data Source Name
SPECCTRA Design File
Autodesk AutoCAD Drawing
Dynamic Submission Project File
Cifraweb Editor Notation Document
AutoCAD Electrical Project Terminal Numbering Data
Autodesk AutoCAD DWGLOG Log
D-MAS Analysis Data
WN Web Server Data

🔴 Can't open a .dwn 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 cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .dwn file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .dwn file extension, write to us!

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