"The Mailbox you are trying to access isn't currently available" error when you use OWA Premium to try to delete an item that is in a shared mailbox

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Article ID: 2489822 - View products that this article applies to.
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Consider the following scenario:
  • You create a user account that does not have a mailbox in a Microsoft Exchange Server 2010 environment.
  • You configure the user account to have full access permissions for a shared mailbox.
  • The user logs on to the shared mailbox by using the Premium interface of Microsoft Outlook Web App (OWA Premium).
  • The user tries to delete an item that is in the shared mailbox.
In this scenario, the user receives the following error message:
The Mailbox you are trying to access isn't currently available. Please try again in a few minutes.


This issue occurs because OWA Premium requires the user to have a mailbox when OWA Premium tries to create the security context. If the user does not have a mailbox, a UserHasNoMailboxException exception is thrown.


To resolve this issue, install the following update rollup:
2529939 Description of Update Rollup 3 for Exchange Server 2010 Service Pack 1


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


Article ID: 2489822 - Last Review: April 6, 2011 - Revision: 2.0
  • Microsoft Exchange Server 2010 Service Pack 1, when used with:
    • Microsoft Exchange Server 2010 Enterprise
    • Microsoft Exchange Server 2010 Standard
kbqfe kbfix kbhotfixrollup kbexpertiseinter kbsurveynew KB2489822

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