Home > Exchange 2010, Exchange 2010 AKA E14 > #Exchange error “Unable to execute the task. Reason: The discovery mailbox, a hidden default mailbox that is required to search mailboxes, can’t be found. It may have been inadvertently deleted. This mailbox must be re-created before you can search mailboxes”

#Exchange error “Unable to execute the task. Reason: The discovery mailbox, a hidden default mailbox that is required to search mailboxes, can’t be found. It may have been inadvertently deleted. This mailbox must be re-created before you can search mailboxes”


When I try to use the Discovery Search Mailbox from the Exchange Control Panel (ECP) I get the following error:

“Unable to execute the task. Reason: The discovery mailbox, a hidden default mailbox that is required to search mailboxes, can’t be found. It may have been inadvertently deleted. This mailbox must be re-created before you can search mailboxes”

Solution:

Run Setup.com /PrepareAD
then

Enable-Mailbox “SystemMailbox{e0dc1c29-89c3-4034-b678-e6c29d823ed9}” -Arbitration

  1. March 25, 2011 at 9:52 am

    Hi Busbar,
    Could you edit “-Arbitratio” value with “-Arbitration”
    Thank you for the useful trcik&cmdlet 🙂

    • March 25, 2011 at 2:50 pm

      Thanks for pointing it out, nice catch

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