![Diane Poremsky [Outlook MVP]](http://www.outlook-tips.net/images/2014/MVP_BlueOnly.png)
Do you have a problem with Outlook 2002/2003's autocomplete cache not working, but 'Suggest names while completing to To, CC, BCC fields' is enabled in Tools, Options, Preferences, E-mail Options, Advanced?
Try renaming the *.NK2 file for your profile (C:\Documents and Settings\USERNAME\Application Data\Microsoft\Outlook) and restart Outlook. Outlook will create a new one for you.
Notes:
You can rename or delete the NK2 file if you want to get rid of all addresses in your autocomplete file.
Outlook 2000/98 doesn't offer autocomplete, only autoresolution. Autoresolution information is stored in a file with the extension 'nick'. You can delete it to reset your autoresolution data.
Published May 17, 2004. Last updated on May 16, 2011.
My Autocomplete in Outlook didn't work either. I did everything that was suggested with my .NK2 file.
THE ONLY THING YOU HAVE TO BE SURE OF: HAVE A COPY OF MICROSOFT INTERNET EXPLORER INSTALLED ON YOUR SYSTEM.
All your problems will be solved and automcomplete will work right away.
Everyone should have IE installed - if you remove it from windows it can cause more issues than just a non-working autocomplete cache.