NK2 files: what are they and how do I open them?
Are you facing difficulties opening unknown files on your computer, or wondering exactly what this file is?
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Microsoft Outlook contacts AutoComplete file
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.
Further details:
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
\Users\user\AppData\Roaming\Microsoft\Outlook
Windows XP, Windows Server 2003
\Documents and Settings\user\Application Data\Microsoft\Outlook
Open file with:
Microsoft Outlook
An e-mail management tool distributed with Microsoft Office suite
NK2Edit
A editor for Outlook .NK2 files
Microsoft Office
One of the most popular and powerful office suites on market