Most IT admins understand MS Outlooks use of the (sometimes) dreaded .nk2 file.
There are tools available to edit the nk2 files and also to view their contents.
Two good links -
Nirsoft NK2View – good free tool to view and delete bad entries.
Here is the best write up I’ve seen yet on how nk2 files work, and the oft-misunderstood difference between auto-resolve and auto-complete. Also available as a pdf download – Outlook-AutoComplete
