When users try to search in Outlook 2013, Outlook returns no results. Search is set to "Search Current Mailbox" and when they enter a term of a message's subject line (Which is in the current folder they are in), Outlook returns no results.
I've already tried going into Indexing Options and rebuilding Outlook's index cache, but this did not resolve anything. Furthermore, unchecking Outlook from the indexing locations, restarting the computer, and trying to add it back in does not resolve the search related issues (even after the cache rebuilds).
We're running Windows 8 Pro x64 + Outlook 2013 x86