.NPFX File Extension

File Type:
Norton Internet Security Firewall Settings File

Having trouble opening .npfx extension? Don't panic! This page explains what npfx files are as well as suggests programs you may use to open npfx files. You can download these programs through this page.

What is a NPFX file?

Npfx file extension has Norton Internet Security Firewall Settings file type, developed by Symantec, which is associated with the "settings files" category.

Mac version of Symantec Norton Internet Security software includes a firewall utility, which creates settings files with this extension. They contain connection blocking settings: port, IP, application filters, and services. NPFX files allow users to save current firewall settings and transfer them from one device to another.  

To learn how you can open the given file, read the information below.

npfx file icon
File Type:
Norton Internet Security Firewall Settings File
Settings Files

How to open NPFX file?

Double click the npfx file to open it. The file will open automatically if file associations have been correctly installed and there is a proper program on your computer; if not, file associations may be corrupted and your OS either cannot find the proper program, or you might not have one for opening the file. First, we recommend downloading our utility to fix file association errors; then, you can download any program for opening the .npfx extension from the ones suggested below. If you are certain there is nothing wrong with the file associations, you may proceed to method 2 right away; besides, if you can't make up your mind when choosing the right program, use Universal File Viewer from the last method.

Method 1: Fix file association errors

Follow these steps in order to automatically fix the npfx extension associations' problem in no time:

  • Step 1: Click on "Download Solution" to download automatic tool provided by WikiExt.
  • Step 2: Click "Start Scan" to identify all potential issues.
  • Step 3: Review scan results and click "Fix Items".

File Size: 3.04 MB, Download time: < 1 min. on DSL/ADSL/Cable

This Tool is Compatible With: Windows XP, Vista, 7, 8/8.1, 10

Method 2: Download the appropriate software

The given list provides programs which may be used for opening or converting the npfx file. Choose the proper program for your OS, and click it to start the download or proceed to the developer's website.

Programs that open NPFX files

  • MacOS MacOS
    • Symantec Norton Internet Security 5 Symantec Norton Internet Security 5

Method 3: Use universal file viewer

In addition to the list of programs above, we recommend using Universal File Viewer. This tool can open over 250 file extensions and, most likely, it will be able to open the npfx file as well. Download Universal File Viewer for your OS.

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