- Free/busy information for Office 365 users is displayed for four to six hours, but the information isn't displayed after that time.
- Free/busy information for Office 365 users is displayed as hash marks in the Scheduling Assistant in Microsoft Outlook.
Additionally, the RPC Client Access logs on the public folder server show the following error message:
If the permissions are set to anything that's lower than Editor, the RPC Client Access service on the Exchange 2010 public folder server can't write the availability information that the service retrieved from the federated organization to the External (FYDIBOHF25SPDLT) public folder replica.
For more information about cross-organization availability scenarios, see the following Exchange Team Blog article:
- Make sure that there's an Exchange 2010 mailbox server that hosts a public folder database.
- If it's not already present, create a free/busy folder that's named External (FYDIBOHF25SPDLT), and make sure that the only replica of the folder is located on the Exchange 2010 server.
- Connect to the on-premises Exchange 2010 public folder server.
- Open Windows PowerShell, and then run the following commands:
Article ID: 2758215 - Last Review: Dec 28, 2016 - Revision: 1