I have a little bit of trouble setting up my Office 365 hybrid environment.
Our current environment is as followed:
2* Exchange 2010 RU10 CAS/HT
2* Exchange 2010 RU10 MBX (all users reside on exchange 2010)
2* Exchange 2013 CU9 CAS/MBX servers for hybrid connection to our Office 365 tenant.
We have the tenant configured and connected to our mail organization, mail flow works like charm.
We use ADFS 2.0 and AADSync for our users.
I have moved my own mailbox to the cloud to start the initial testing and iron out the biggest flaws in the setup before I transfer a select few users (other administrators) for the technical test-phase.
Almost everything works.
Only the free-busy with on-premises does not work.
When I try to open the calendar of another user I receive a “Free/Busy information is not available.” Error (this is a Office365 >> On-Prem situation).
I have enabled the sharing policies for free/busy but they seem to have no effect.
When I change the default permissions on a users calendar to “Reviewer” I am able to see everything in de users calendar.
When I switch the permissions back to anything less than reviewer I lose the ability to view the users calendar.
From on-prem to office 365 users are able to see my free/busy information.
Can anybody shine some light on this problem?
If you need more information, just let me know.