I have migrated my Exchange 2007 on-prem server to o365, using a staged migration.
Everything is syncing great, except for the room calendar in outlook:
I have a room resource named "Leave" it is a calendar whereby all users can add the days they are out of the office. Anyone can do this, I don't need a delegate to approve / etc. In exchange 2007, this was working fine.
I can edit the calendar when using OWA, and all works fine as expected, but not from Outlook (2016) - it keeps giving me permissions issues i.e. "You don't have permissions to create an entry in this folder. etc..".
Right clicking on the room calendar and viewing properties gives the "Cannot display folder properties. The folder may have been deleted or the server... etc".
Any suggestions please? I have tried adding my admin account as a delegate, creating different room calendars.. and still no dice..
Thanks.