The nk2 file extension is used for Microsoft Outlook contacts AutoComplete files. Outlook AutoComplete feature attempts to be helpful by suggesting email names that are similar to what you're typing.

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Software that works with nk2 file extension

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NK2 file extension - Microsoft Outlook contacts AutoComplete file

What is nk2 file? How to open nk2 files?

The nk2 file extension is associated with Microsoft Outlook, a personal information manager, which is part of Microsoft Office, developed by Microsoft Corporation.

The *.nk2 files are used by the Auto-Complete feature. Outlook's auto-complete feature attempts to be helpful by suggesting email names that are similar to what you're typing. A couple of keystrokes, an auto-complete suggestion, and you don't have to type the entire email name every time. Seems both simple and handy.

The *.nk2 file is hidden by default. The older versions of Microsoft Outlook were using the .nick file extension instead.

Paths to NK2 file:

Windows Vista, Windows 7, Windows 8


Windows XP, Windows Server 2003

\Documents and Settings\user\Application Data\Microsoft\Outlook

The default software associated to nk2 file type:

Microsoft Outlook icon

Microsoft Corporation logoMicrosoft Outlook  Microsoft Windows software

Company or developer:
Microsoft Corporation

Microsoft Outlook is e-mail management tool and personal information manager distributed with Microsoft Office suite. Outlook integrates e-mail application, calendar, task manager, contact manager, note taking in to one application.

Microsoft Outlook is used as a stand-alone application and also can work with Microsoft Exchange Server and SharePoint Server.

The predecessor of Outlook was called Schedule+. The newest version is called Outlook 2016.

NK2Edit picture or screenshot

NK2Edit  Microsoft Windows software

Company or developer:

NK2Edit is used to edit .nk2 Microsoft Outlook "AutoComplete" files.

Microsoft Office icon

Microsoft Corporation logoMicrosoft Office  Microsoft Windows software

Company or developer:
Microsoft Corporation

Microsoft Office is popular productivity suite for Microsoft Windows. Microsoft Office contains a set of applications and services used to work with documents (Microsoft Word), spreadsheets (Microsoft Excel), presentations (Microsoft Powerpoint), databases (Microsoft Access) etc..

Microsoft Office can be also used to manage e-mail accounts, tasks, calendars and contacts (Microsoft Outlook). Microsoft Office for Windows is distributed in four editions for Home, Academic and corporate sector.

Help how to open NK2 files:

Use NK2Edit to open and edit *.nk2 Microsoft Outlook contacts AutoComplete files.

How to convert file with extension NK2:

As far as we know, this .nk2 file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

List of software applications associated to the .nk2 file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux etc.) and possible program actions
that can be done with the file
: like open nk2 file, edit nk2 file, convert nk2 file, view nk2 file, play nk2 file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is ableto perform the specified software action, such as opening, editing or converting nk2 files.

  • Open nk2 file
  • Edit nk2 file
  • Settings nk2 file
  • Others nk2 file

Software that open nk2 file - Microsoft Outlook contacts AutoComplete file

Click on the link to get more information about NK2Edit for open nk2 file action.

Microsoft Windows:

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