If you are seeking information about file extensions, then you are in the right place at the right time.

Details of extension .msn

On this page, we're going to take a closer look at the .msn file extension.

We'll explain what exactly a .msn file format is and how you can use it. If you're interested in learning more details about this type of file, we'll show you where to find them. And if you ever need to convert .msn files into different formats, we'll give you some tips on how to do that too.

Let's see the 3 file formats associated with this file extension!


  1. Host Blocking File
  2. MSN Content Plus Installation Data
  3. Descent Mission Data

We trust that our website will provide valuable information for you. If you have any questions, just ask!

Host Blocking File

msn file - Host Blocking File
Under the Configuration category, the MSN file is operating as a Host Blocking File. Based on our current information, does not use other file types.
Application: -
Program name: -
Mime-type: application/octet-stream
Related extensions:
.dun Dial Up Networking Exported Settings
.wfc Windows Wireless Network Settings
.ncf Novell Storage Services Cache Settings
.axr Advanced Archive Password Recovery Settings

MSN Content Plus Installation Data

msn file - MSN Content Plus Installation Data
The MSN file belongs to the Data category and works with MSN Content Plus, being used as a MSN Content Plus Installation Data. MSN Content Plus is a suit of custom MSN Messenger content enhancement tools and packs. The developer no longer updates MSN Content Plus and does not provide support anymore. According to our data, MSN Content Plus uses one more file types.
Application: MSN Content Plus
Program name: -
Category: Data files
Mime-type: application/octet-stream
Related extensions:
.mcp MSN Content Plus Installation Archive

Descent Mission Data

msn file - Descent Mission Data
The MSN file belongs to the Game Data category and works with Descent, being used as a Descent Mission Data. Descent is a 3D first-person shooter video game developed by Parallax Software and released by Interplay Entertainment Corp. in 1995. The developer is still actively supporting the Descent, likely. Our data shows that Descent uses 9 more file types.
Application: Descent
Program name: -
Category: Game Data files
Mime-type: application/octet-stream
Related extensions:
.hxm Descent 2 Resource Modification
.hog Descent Mission File
.pog Descent 2 Data
.pig Descent Data

The .msn file extension might not only belong to a single type of file, there could be various kinds that use it. Keep in mind that files with the .msn extension may contain various content types. If you have helpful information about this extension, write to us!

Could someone have spelled the .msn file extension wrong?

In our database, we came across the following similar extensions:

.msg OS/2 Warp Help Message
.mn MuPAD Notebook Document
.jsn JetSoft Shield Now Data
.msb The Bat! Message Database
.mcn Theatre of War Game Data
.ms Autodesk 3D Studio Max Script

The .msn extension is frequently misused

People sometimes confuse the .msn filename extension. Based on the searches on our site, here are the most common misspellings from the past year.

msh (1), mns (1), jsn (1), msg (1), mcn (1), msb (1), msm (1), smn (1), hsn (1), msj (1)

Having trouble opening a .msn file?

If you want to open a .msn file on your computer, you just need to have the appropriate program installed. Incorrect settings for the .msn association can trigger this error.

Windows can't open this file:

File: example.msn

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 from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program with which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2016/2019/2022, Windows 7, Windows 8, Windows 10, Windows 11, Linux, Mac OS X, macOS, iOS, Android