Install-Now

.MSN File Extension

A .MSN file is a Host Blocking File, created by Microsoft.

Open with Referenced by the operating system. Available for Windows.

What is a .MSN file?

The file extension .MSN is associated with a Host Blocking File. This type of file contains a list of Internet hosts, usually specified by their IP addresses, that are blocked from being accessed. This means that any website or online location listed in this file will not be reachable from the computer using this file. The purpose of such files is to prevent access to certain websites, which might be unwanted or harmful.

The default file for blocking hosts is usually named "hosts.msn" and can be found in the directory "C:\WINDOWS\system32\drivers\etc" on computers running Windows operating systems. This file is directly used by the operating system to manage access to specific Internet addresses.

To open or edit the .MSN file, you would typically use a text editor program. Common text editors include Notepad on Windows, TextEdit on macOS in plain text mode, or any other text editing software that can read plain text files. Since this file affects how the computer accesses the Internet, it should be modified carefully and ideally by someone who understands the implications of blocking specific Internet hosts.

Verification

Our goal is to help people find the most up-to-date information about file extensions for Windows, Mac, Linux, Android and iOS. We researched over 10,000 file extensions and their respective programs that open those files. If you want to suggest edits or updates about .MSN file formats, example files, or programs that are compatible. Please contact us.

More extensions