NK2 File Extension
Microsoft Auto complete Nick Format
Overview: NK2 File Type
The Microsoft introduced NK2 files in Outlook 2002 and later versions to provide users with a suggestion of contacts when user type a name of or its initials.
This file sometimes called as Nick(.nk2) file extension.
Application Category
Contacts, Email messages, and address category.
Organization
Microsoft Corporation
Format Type
Email, Names, Address and Contacts type
Technical Specifications
MIME Type
Standard Identifier
Not Specified
Proprietary internal Outlook format.
File Signature Details
Hexadecimal Signature
0D F0 AD BA 0A 00 00 00
Specific binary header for Outlook Nickname files.
Location of NK2 Format
The Location of NK2 File Vary according to different versions of Outlook and Windows:
For Outlook 2003 and 2007
Windows 2000, XP and Server 2003:
C:\Documents and Settings\[User Profile]\Application Data\Microsoft\Outlook
Windows Vista, 7 and Server 2008:
C:\Users\[User Profile]\AppData\Roaming\Microsoft\Outlook
For Outlook 2010 and 2013
Windows XP:
C:\Documents and Settings\[User Profile]\Local Settings\Application Data\Microsoft\Outlook\RoamCache
Windows Vista, 7 and Server 2008:
C:\Users\[User Profile]\AppData\Local\Microsoft\Outlook\RoamCache
Applications Supported
All Microsoft 2002 and above versions (that is 2003, 2007, 2010, 2013) support .nk2 file extension
How to open NK2 File
NK2 files can be opened in two ways:
Outlook 2002 and below versions
If NK2 files are corrupt then it can be opened using specialized tools