- You have a hybrid deployment of on-premises Microsoft Exchange Server and Microsoft Exchange Online in Office 365.
- You configured legacy on-premises public folders for a hybrid deployment.
- You create a shared mailbox that's located in Exchange Online.
- You assign Full Access permissions to one or more users.
- Users add shared mailboxes as second Exchange accounts in their existing Outlook profile.
[LoginPermException] 'User SID: S-1-5-21-1458817636-171340609-1824194506-1199' can't act as owner of a MailUser
object '/o=ExchangeLabs/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients/cn=189bd14f1ede49d7977
85e8f20d55edf-Shared Mail' with SID S-1-5-21-1458817636-171340609-1824194506-1207 and MasterAccountSid S-1-5-10
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Article ID: 3184064 - Last Review: Dec 29, 2016 - Revision: 1