Training Goddess wrote:

I may be wrong, but it would seem that if I reset my calendar
customization, all of my recurring appointments suddenly go from
being 1 day (24 hrs) to an extra day. So they automatically configure
themselves to start on the original date and then extend to the
following day. It seems that is the only thing that I'm doing
differently. Is there anything else that might cause this? I have a
LOT of recurring appointments and I've already gone through them to
correct this problem. Also, is there a quick way to switch it back to
its original start/end/duration in a view?

Sounds like a mismatch in the time zone or DST settings between Windows
clock and Outlook's Calendar.
--
Brian Tillman