.NSF File Extension

File Type:
Lotus Notes Database

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

What is a NSF file?

Nsf file extension has Lotus Notes Database file type, developed by IBM, which is associated with the "database files" category.

Commonly used by IBM Lotus, the file comes in the Notes Storage Facility (NSF) format. It usually contains business-related data, including calendar and mail. NSF files enable users to work with a database both online and offline. They may be also applied to replicate the data.

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

nsf file icon
File Type:
Lotus Notes Database
Database Files

How to open NSF file?

Double click the nsf 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 .nsf 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 nsf 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 nsf 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 NSF files

  • Windows Windows
    • IBM Lotus Notes IBM Lotus Notes
    • IBM Domino IBM Domino
    • Stellar Phoenix NSF to PST Converter Stellar Phoenix NSF to PST Converter
    • Stellar Phoenix Lotus Notes Recovery Stellar Phoenix Lotus Notes Recovery

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 nsf file as well. Download Universal File Viewer for your OS.

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