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Exchange 2013 : What is an arbitration mailbox? / Unable to Decommission an Exchange server. [Solved]

When Decommissioning an old Exchange server you may receive this error massage :

 

Configuring Prerequisites COMPLETED

Prerequisite Analysis FAILED

Uninstall can’t continue.

Errors:

This mailbox database contains one or more mailboxes, mailbox plans, archive mailboxes, public folder mailboxes or arbitration mailboxes. To get a list of all

Read more… Exchange 2013 : What is an arbitration mailbox? / Unable to Decommission an Exchange server. [Solved]

How to remove a disabled/softdeleted mailbox

How to create an user overview, incl mailbox and mailbox guid

Get-MailboxStatistics -server ‘xch01.dmain.local’ | Select DisplayName, Database, LastLoggedOnUserAccount, ItemCount, TotalItemSize, LastLogonTime, LastLogoffTime, MailboxGUID | Export-CSV c:\scripts\mailbox-server-xch01-8-4-2012.csv

Full username Mailbox Database 0018485193 domainuser1 11 152.6 KB (156,304 bytes) 3/20/2012 10:50:00 AM 3/20/2012 10:50:02 AM 6b4d2897-2ad4-4255-9660-df737d691ecd Full username Database1 domainuser1 7115

Read more… How to remove a disabled/softdeleted mailbox