Unable to uninstall E13 or remove database with Exchange 2013‎, This mailbox database contains one or more mailboxes …

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.

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.

to see  the Arbitration mailboxes ,

Get-Mailbox -Arbitration

Get-MailboxDatabase

Get-Mailbox -Arbitration |ft Name, Servername

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

Finally,

Get-MailboxDatabase | Remove-MailboxDatabase

Remove an Arbitration Mailbox

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

Respectfully,
Oz Casey, Dedeal ( MVP north America)
MCITP (EMA), MCITP (SA)
MCSE 2003, M+, S+, MCDST
Security+, Project +, Server +
http://smtp25.blogspot.com/ (Blog)
http://telnet25.wordpress.com/ (Blog)