NK2 File Extension

The NK2 file extension was created by Microsoft and is also known as the Outlook 2002 Nickname File. NK2 is classified as a Misc Files and The format of this file type has not been determined yet. You can open NK2 files in Microsoft Outlook program.

Outlook 2002 Nickname File Type

Outlook 2002 Nickname File Type
Extension .nk2
Developer Microsoft
Popularity 5.0 (9 Votes)
Mime Type mime-type/not.available
Default Program Microsoft Outlook
Category Misc Files
Format Not Available
Updated 6/1/2025

What is a NK2 File Type?

Outlook 2002 uses NK2 files. Previous versions of Outlook use .NICK files.

Free Online NK2 Tools & Apps

Access powerful and secure free online NK2 tools to convert, view, edit, merge, split, and compare NK2 files — all without installing any software. Our tools support the .NK2 (Outlook 2002 Nickname File) file extension and run smoothly in any modern browser.

Select a tool below to explore features and manage your NK2 files directly from your device with ease.

NK2 Files Common Issues

There are few common issues with the Outlook 2002 Nickname File .NK2 File Extensions while opening the .NK2 files on Windows and MacOs, we have solution to those issues such as:

Can't Open NK2 Files?

  1. You must have supported software programs installed for Outlook 2002 Nickname File on your system such as Microsoft Outlook.
  2. Associate default Microsoft Microsoft Outlook program for *.nk2 (Outlook 2002 Nickname File) files.

    Associate NK2 Default Program on Windows
    1. Right-click a *.NK2 (e.g example.nk2) file and click Open With.
    2. In the Open with dialog box, click Microsoft Microsoft Outlook program Or click Browse to locate the program (*.exe) that you want.
    3. Select check box for Always use this app to open .nk2 files.

    Associate NK2 Default Program on MacOs
    1. Click *.NK2 (e.g example.nk2) file and click information -> Open With.
    2. In the programs list, click Microsoft Microsoft Outlook program Or other appropriate program that you want.
    3. Confirm Change for all... and Contine.
    4. A message will appear "This change will be applied to all files with .Microsoft Outlook extension. By clicking Continue you confirm your selection", click Contine to apply changes.

All Platform Software Programs for NK2 File Extension

List of all softwares that can open the NK2 files on each platforms such as Windows, Mac, iOS, Linux, Web and Android, you may click the each software link for more details for other supported formats for each software and the verified direct download links for each software with complete lisensing details.

Microsoft Windows logo image Open NK2 File on Windows

Software License Developer
Microsoft Outlook image. Microsoft Outlook 365 for Windows Commercial Microsoft

MacOs logo image - FileProInfo.comOpen NK2 File on Mac OS

Software License Developer
Microsoft Outlook image. Microsoft Outlook 365 for MacOs Commercial Microsoft

Linux logo image - FileProInfo.comOpen NK2 file on Linux

Software License Developer

Website logo image - FileProInfo.comOpen NK2 file on Web

Software License Developer

iOS logo image - FileProInfo.comOpen NK2 file on iOS

Software License Developer

Android logo image - FileProInfo.comOpen NK2 file on Android

Software License Developer

About Licensing

  1. Free Trial This software are often used for an attempt period, like 14 days, before requiring payment. Some trial versions have a reduced feature set.
  2. Free This software is liberal to use. Examples include open-source , freeware software, like free programs supported by advertising.
  3. Free+ This software is liberal to download and use, but contains in-app purchases (IAP) to unlock additional content or functionality.
  4. Paid This software must be purchased so as to use it. it's going to be offered as a perpetual license or ongoing subscription.
  5. Included with OS This software is bundled with an OS , like Windows, macOS, or Android.

NK2 file extension icon image.About NK2 - Outlook 2002 Nickname File

FileProInfo is to help you understand about the Outlook 2002 Nickname File with *.NK2 suffix, and provide the complete detail as how to open, edit, convert, merge, split and compare it with other related software programs, software download links and free online apps and tools.

Our professional team members at FileProInfo have been individually researched and verified the details for NK2. We want to be 100% accurate and publish the information about file formats, tools, apps and software programs that we have tested and validated.

If you would like to suggest any additions or updates to this page for NK2, please let us know.

Updated 6/1/2025