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Old email addresses keep reappearing

"One of my email contacts has a new email address as their company changed their domain name. I have deleted and re-entered her correct email address about half a dozen times in the address book and yet my PC still thinks I am sending her emails to her old domain.com instead of her new domain.com . When I entered her name it defaults to the "olddomain.com" address even though it is nowhere to be found on my PC. I have to select her "newdomain.com" address from the address book for it to work. Has anyone experienced where Outlook is keeping this old email address info? How can I can purge it?"

This is an all too common experience for many users.

If you are using Outlook 2002/2003/2007, use the arrow key to select the incorrect address and press the Delete key. You can also clear the entire nickname file (*.NK2) by deleting it.

Older versions of Outlook store nicknames in a file using the extension *.nick but do not support using it for autocomplete.

The nickname files are found at C:\Documents and Settings\username\Application Data\Microsoft\Outlook if you are using Windows XP/2000. You can easily access it by pasting 

%USERPROFILE%\Application Data\Microsoft\Outlook

in the Address bar of your browser or Windows Explorer.

 

Tools

debunk2   Open source project to read MS Outlook autocomplete (NK2) files and extract email addresses. Beta version 0.5
Ingresssor   Use Ingresssor (formerly OwtLook) to edit the NK2 file

More Information

To learn more about the files Outlook uses and where they are stored, visit http://www.slipstick.com/config/backup.htm.
Updated Apr 09 2008

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