Article ID: 2890814 - View products that this article applies to.
After you install Cumulative Update 2 (CU2) for Exchange Server 2013 in your on-premises environment, you notice that Outlook Web App redirection no longer works in your Exchange hybrid deployment.
For example, when a user who has an Exchange Online mailbox connects to the on-premises Exchange Server 2013 CU2 server and authenticates, the user isn't redirected to the following location as expected:
http://outlook.com/owa/<DomainName>.comInstead, the user receives the following error message:
something went wrong.
A problem occurred while you were trying to use your mailbox.
To resolve this issue, install Cumulative Update 3 for Exchange 2013. For more info, see the following Microsoft Knowledge Base article:
(https://support.microsoft.com/kb/2892464/ )Description of Cumulative Update 3 for Exchange Server 2013
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Article ID: 2890814 - Last Review: July 9, 2014 - Revision: 4.0