TCAUTIEXE, TCAUDIAG
This one appears to be safe to rename. You can make up your own mind about Loadwc.exe from the article quoted.
TCAUTIEXE, TCAUDIAG
These are associated with the 3COM diagnostic module (3COM NIC Doctor).
A program from 3COM that creates a system tray icon that you use to run the 3com NIC diagnostic program. Momentarily place your mouse cursor
over the 3com icon to obtain network traffic(frame sent, frame received
and link speed) and information about the installed NIC.
Not Required. Can be run manually.
(Type the Q number in the search box at support.microsoft.com)
Description of the Loadwc.exe File in Internet Explorer
Q176960