Can't access a shared mailbox after you migrate from Exchange Server 2010 to Exchange Server 2013
Assume that you assign Full Access permission to a shared mailbox that's configured as an additional account in Microsoft Outlook for some users. After you migrate the mailbox from a Microsoft Exchange Server 2010 environment to a Microsoft Exchange Server 2013 environment in an Exchange resource forest, these users can't access the shared mailbox in Outlook. Additionally, the shared mailbox can't be accessed as a primary mailbox.
This issue occurs because of a configuration in the security logic of Exchange Server 2013.
To fix this issue, install Cumulative Update 10 for Exchange Server 2013.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Article ID: 3078404 - Last Review: 09/15/2015 15:58:00 - Revision: 1.0
Microsoft Exchange Server 2013 Enterprise, Microsoft Exchange Server 2013 Standard
- kbqfe kbsurveynew kbfix kbexpertiseinter KB3078404