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Exchange 2013‎ Troubleshooting: Unable to uninstall E13 or remove database

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If you are unable to remove such database or in the process of trying to remove the Exchange 2013 server and receiving fallowing errors take a quick look how to deal with “Arbitration mailboxes?

See the steps listed below.

Steps

Remove-MailboxDatabase : This mailbox database contains one or more mailboxes, mailbox plans, archive mailboxes, public folder

mailboxes or arbitration mailboxes. To get a list of all mailboxes in this database, run the command Get-Mailbox -Database <Database

ID>. To get a list of all mailbox plans in this database, run the command Get-MailboxPlan.

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to see  the Arbitration mailboxes ,

Get-Mailbox -Arbitration

Get-MailboxDatabase

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Get-Mailbox -Arbitration |ft Name, Servername

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Copy and paste the name of the A_MB into fallowing PS and confirm the deletion until you get rid of all

Disable-Mailbox “SystemMailbox{bb558c35-97f1-4cb9-8ff7-d53741dc928c}” -Arbitration -DisableLastArbitrationMailboxAllowed

 

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Finally,

Get-MailboxDatabase | Remove-MailboxDatabase

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Remove an Arbitration Mailbox

http://technet.microsoft.com/en-us/library/dd298110(v=exchg.150).aspx