You cannot access an Exchange Server 2013 mailbox if your mailbox is located in Exchange Server 2010

Symptoms

Issue 1

Consider the following scenario:

  • You have a mailbox on a Microsoft Exchange Server 2010 server.

  • You have the permissions to a shared mailbox that is located on a Microsoft Exchange Server 2013 server.

  • You log on to your mailbox in Microsoft Outlook, and you can see the shared mailbox.

In this scenario, you cannot expand the shared mailbox in Outlook.

Issue 2

Assume that you log on to an administrator mailbox that exists on an Exchange Server 2010 server. You create a profile for a mailbox that is located on an Exchange Server 2013 server. In this situation, the profile is created. However, you cannot log on through the profile.

Resolution

To resolve this issue, install the following update rollup:

2917508 Description of Update Rollup 5 for Exchange Server 2010 Service Pack 3

Cause

This issue occurs because Exchange Server 2010 generates an incorrect Autodiscover response for the Exchange Server 2013 mailbox. Specifically, the AlternativeMailbox part of the Autodiscover response shows a server name that is not valid for an Exchange Server 2013 mailbox.

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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