troubleshooting Question

Office 365 Users cant See On-Premise Free/Busy Information

Avatar of Scott Townsend
Scott TownsendFlag for United States of America asked on
Microsoft OfficeExchangeMicrosoft 365
14 Comments3 Solutions7560 ViewsLast Modified:
Exchange 2010 Hybrid Office 365 Free Busy Issues.

On-Premise users can see Free/Busy Information of On-Premise users.
On-Premise users can see Free/Busy Information of O365 Users.
O365 Users can See Free/Bust Information of O365 Users.

O365 Users cannot See Free/Bust Information of On-Premise Users.

The O365 user can Open the Users calendar and see everything, though when they use the Scheduling Assistant when creating a Meeting they get:

No Information.
No free/busy information could be retrieved
the external recipient's server could not be determined.
Contact your administrator

MS Remote Connectivity Analyzer comes back with all okay for AutoDiscover.

The User's Default Calendar Permissions allow for "AvailabilityOnly", I have also tried "LimitedDetails" with no success.

RunspaceId   : c704d8d7-fc2a-4c5e-84ee-f9387189b798
FolderName   : Calendar
User         : Default
AccessRights : {AvailabilityOnly}
Identity     : Default
IsValid      : True

RunspaceId   : c704d8d7-fc2a-4c5e-84ee-f9387189b798
FolderName   : Calendar
User         : Anonymous
AccessRights : {None}
Identity     : Anonymous
IsValid      : True

Here is the Default Sharing Policy:

RunspaceId        : c70458d7-f52a-4c55-84e5-f9387189b758
Domains           : {Anonymous:CalendarSharingFreeBusyReviewer, *:CalendarSharingFreeBusySimple}
Enabled           : True
Default           : True
AdminDisplayName  :
ExchangeVersion   : 0.10 (
Name              : Default Sharing Policy
DistinguishedName : CN=Default Sharing Policy,CN=Federation,CN=<site>,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=costono,DC=com
Identity          : Default Sharing Policy
Guid              : 35eca126-d55b-4d84-95e9-6f7f99a6c46e
ObjectCategory    :
ObjectClass       : {top, msExchSharingPolicy}
WhenChanged       : 3/28/2018 11:24:37 AM
WhenCreated       : 6/20/2011 4:22:52 PM
WhenChangedUTC    : 3/28/2018 6:24:37 PM
WhenCreatedUTC    : 6/20/2011 11:22:52 PM
OrganizationId    :
OriginatingServer : addc.costono.COM
IsValid           : True
Scott Townsend
IT Director

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