Can you do a forum search for ashOutXt.dll as I recall this being discussed recently.
It mush have been installed as I believe this message relates to Outlook add-in/plug-in that I assume Outlook is trying to load. Not sure where you look for this as I don’t use Outlook, usually we are looking for disabled plug-ins.
If you can follow this and adjust for enabled items.
Outlook 2003 > Help > About > Disabled items
Outlook 2000 > Tools menu > Options > Other > Advanced Options > Add-In Manager.