Since a few days we cannot anymore do a "search" in the mails and in the contacts. It always gives "no results".
On the other hand, if you put the mouse on the "contacts" icon a window pops-up with a direct search for contacts. This is a standard possibility in Outlook, so nothing special. If we put an name in this window we do get the right answers.
We already compressed the "personal map" (Outlook.pst) and the "archive map" (archive.pst) and reindexed Windows 10 (incl. Outlook) but nothing helped.
It's very annoying if you have 4000 contacts, completely worked out, and you cannot get anymore things like "contacts in company xyz" or "the mails from mr. abc".
Is their anybody having a clue what's wrong and how we can fix it?