Hmm... did you try the simple solution of switching to Outlook Express
select Apply and then switch it back to Microsoft Outlook?

Couple of other thoughts to try is...
1) fixmapi.exe
2) Detect and Repair of Office/Outlook 2003/7


"Snapper" wrote in message
...
neo [mvp outlook] wrote...

If you still have Eudora installed, you need to go into that application
and
turn MAPI support off. This will restore the handling of the calls back
to
Microsoft binaries.

I just checked Eudora. Use MAPI Server option is turned off.