I'm using Outlook with my office's exchange server. I've been a happy user
of the 'search folder' feature (mainly the 'for follow-up' search folder),
but this suddenly seized to work.

After some experimenting I discovered that the underlying problem is the
failure of 'Find' to find anything. Any search I perform simply doesn't find
anything.

I'm using Outlook on a remote desktop infrastructure, just like all my
colleagues. I asked a few of them if they had any problems with this, and
they apparently hadn't.

Since I'm sharing this remote desktop with a few 1000 colleagues, it can't
be my PC and the remote infrastructure. I assume it must be a setting of
Outlook I advertently made, but I have not the faintest idea what it may be.
Our helpdesk doesn't have a clue either (at least, they are sitting on this
for a couple of weeks now without response).

Any help would be very much appreciated.