Exchange 2013‎ Troubleshooting: Unable to uninstall E13 or remove database

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