I'm an Office 365 user and I'm running Outlook on 3 MAC's and 2 PC's.  Everything is working fine on all machines except one.  The folders on that one machine are not only not in sync but they are not in order.  I tried to reset the cache on the MAC which is what it says to do to force a resync but that is not working.  The calendars are also out of sync.  On the PC, you just delete the .ost file on the local machine and the file is rebuilt and resynced automatically.  There does not seem to be a similar procedure on the MAC.

Thanks for any help.