Home : File Types : NK2 File

.NK2 File Extension

NEW! Open any file with File Viewer Lite.

File TypeOutlook 2002 Nickname File

2.5 (2 Votes) Thanks for voting!
Rare Uncommon Average Common Very Common
CategoryMisc Files


File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.


Contains the nickname for an Outlook user that is a associated with a user profile; allows a user to create a nickname and assign the name to an e-mail address.

More Information

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

Program(s) that open .NK2 files
Microsoft Windows LogoWindows
Microsoft Outlook 2016
Updated 3/13/2008