Free utility to import N2K file

Microsoft Outlook 2003 and Microsoft Outlook 2007 do not store email addresses you correspond to via email in your address book, what it does, it stores all these email addresses in what is called the cached file called N2K file. The N2K  file cannot be read via a regular text editor nor can it be directly imported into outlook contacts.

Many users get bumped when they find this out, (especially noticeable when they receive a new computer).

The utility we have can open up the N2K file and export all the addresses into a CSV file. Best of all, it is free. 🙂

the N2K file can be located at the following path C:\Documents and Settings\(Your USERNAME)\Application Data\Microsoft\Outlook\Outlook.NK2

Download the N2K tool.

If you have similar tools or cool tools please share it with us…. we will credit you for it

Attached is a utility that would extract the nk2 files into csv (so they can be imported into address book) 

Once in a CSV, you can easily delete invalid exchange addresses and maintain the smtp addresses.

Please let me know if you have any questions.

it is a beta version but has always worked for me.  😉

One Response to “Free utility to import N2K file”

  1. badHex says:

    This is brilliant! I needed this because unfortunately as you said above, many people rely on the NK2 to store addresses, and 2007 autocomplete is really really slow with old NK2 files (you basically have to delete the file completely after upgrading to fix).

    Does anyone know of a utility to actually edit (ie remove addresses from) the NK2 file?
    Many thanks,


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