The location of NK2 file of MS Outlook

Sometime we are really frustrated by looking on NK2 file which store all the email address that we had used for past... maybe few month? year? or century? are you kidding, guys....

Anyway, the location of the NK2 AutoCompelete file created by Outlook might be different from one computer to another, depending on the operating system and the version of Outlook.


Here's the rules for finding the location of your NK2 file:

For Outlook 2003/2007 with Windows 2000, Windows XP, or Windows Server 2003: 
The location of the nk2 file is C:\Documents and Settings\[User Profile]\Application Data\Microsoft\Outlook 
The name of the NK2 file is identical to the Outlook profile name, with .nk2 extension.

For Outlook 2003/2007 with Windows Vista, Windows 7, or Windows server 2008: 
The location of the nk2 file is C:\Users\[User Profile]\AppData\Roaming\Microsoft\Outlook
The name of the NK2 file is identical to the Outlook profile name, with .nk2 extension.

For Outlook 2010 with Windows Vista, Windows 7, or Windows server 2008: 
The nk2 file is located in C:\Users\[User Profile]\AppData\Local\Microsoft\Outlook\RoamCache 
The name of the NK2 file is in the following format: Stream_Autocomplete_X_AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.dat

The X is the file index (usually 0) and AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA is a random 16-byte key in hexadecimal format.

For Outlook 2010 with Windows XP: 
The nk2 file is located in C:\Documents and Settings\[User Profile]\Local Settings\Application Data\Microsoft\Outlook\RoamCache 
The name of the NK2 file is in the following format: Stream_Autocomplete_X_AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.dat

The X is the file index (usually 0) and AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA is a random 16-byte key in hexadecimal format.

When you use the NK2Edit utility, you don't have to worry about locating the NK2 filename, because NK2Edit automatically open the default NK2 file for you.



Reference: http://www.nirsoft.net/utils/nk2_file_location.html