I have (/had) the same issue:
If I use the old interface in Outlook, no indexing past a certain date.
But using the "new Outlook" (interface) it seems to be searching all mails correclty and indexing as it should.
This seems to be a Microsoft problem. Now if only the new interface was as user friendly as the old...
TzarMilo
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
From
Norge