File Extension Library


.NS4 File Extension

  • Developer by: IBM
  • Category: Database Files
  • Format: Binary

What is an .NS4 file?

.NS4 file extension is created by IBM. .NS4 has been classified as Database Files. The format of .NS4 file is Binary.

.NS4 is Lotus Notes 4 Database

Database file created by Lotus Notes 4.x; contain a list of contacts, text notes, e-mail messages, calendars, and other information; stores structured data for personal and business organizational management.

"Domino," the Notes server program, was released in 1996 along with Notes 4.5. Many following updates were only release for Windows, but Lotus Notes 7.0.2 was released for Mac OS X in 2006.

How to Open .NS4 file on different platforms

Open .NS4 File on Windows

  • Right-click a .NS4
  • Left-click "Open With" > "Choose another app"
  • Select the program that opens .NS4 file and Select check box "Always use this app to open .NS4 files" Press "Ok"

Open .NS4 File on Mac

  • Right-click (or Ctrl + Left-click) the .NS4 file
  • Click "Open With" > "Other.."
  • Then choose another program from the app list and press "Open"
  • Select check box "Turn on" for "Always open in app"

Open .NS4 File on Linux

Right click on the .NS4 file, choose "Open with" and select a program from the list above

Open .NS4 File on iPhone

Select a file. If you don't see an application to open the .NS4 file, tap "Share" and choose the right app.
Method 2
Save the file. Then open the app «Files». Touch and hold the file, then release your finger. You will see a black menu bar. After that tap "Share" and select an application.

Open .NS4 File on Android

Tap the Settings icon on an Android smartphone, then select «Applications». Click the Settings icon in the upper right corner of the screen, to change the default apps.
If you want to open, edit, save or even convert .NS4 files on Android, then your best bet is to download one of the dedicated apps available on Google Play.

How to fix problems with .NS4 files

  1. You need to update the application that you normally use to open .NS4 files. Only the latest version of the software supports the current .NS4 file format
  2. You need to check the .NS4 file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)