In the Microsoft Office 365 for enterprises environment, when a user that uses a cloud account to get free/busy information from an on-premises account, the user may fail to get the information. Additionally, the following error message is prompted:
You don't have permission to see free/busy information for this attendee. (Error code 5037)
Many issues may result in this issue that mentioned in symptoms. The following is observed in the business environment:
On-premise domain's autodiscover that points to Office 365 domain.com is not configured in Organization Relationship on both sides
How to identify this issue
Run the test-OrganizationRelationship cmdlet to get detailed information. For example, you can run the following command:
test-OrganizationRelationship -identity "To Cloud" –verbose
And you will see an error similar to below:
Id : AutodiscoverServiceCallFailed
Status : Error
Description : The Autodiscover call failed.
IsValid : True.
1. Configured on-premise autodiscover.domain.com as a CNAME to point to mail.domain.com,
2. Added domain.com to list of Federated Domains for On-Premise OrganizationRelationship
Office 365 for enterprises