I had a Exch2010, deployed two more mailbox servers for the purpose of migration and DAG - MBX01 & MBX02 which are Exchange 2013 on Win 2012. Then I created new 2 new users for testing, one in Ex2010 and another one MBX01 - all worked fine.
Tried to move the test user from Ex2010 to MBX01 - it failed with the error - The migration mailbox for the organization is either missing or invalid.
Looked into the forum and found the issue related to arbitration mailbox that is missing in MBX01 and MBX02.
I can see FederatedEmailbox & SystemMailbox only for Exch 2010 but I could not see anything linked to Exch2013 mailbox servers as below,
[PS] C:\Windows\system32> Get-Mailbox -Arbitration -server MBX01
[PS] C:\Windows\system32> Get-Mailbox -Arbitration -server MBX02
[PS] C:\Windows\system32> Get-Mailbox -Arbitration -server EXCH2010
Name Alias ServerName ProhibitSendQuota
---- ----- ---------- -----------------
FederatedEmail.4c1f4d8... FederatedEmail.4c... exch2010 1 MB (1,048,576 bytes)
SystemMailbox{1f05a927... SystemMailbox{1f0... exch2010 Unlimited
SystemMailbox{e0dc1c29... SystemMailbox{e0d... exch2010 Unlimited
Forums suggesting,
Run the setup with of Exch 2013 installtion package,
[PS] F:\>
[PS] F:\>setup /IAcceptExchangeServerLicenseTerms /preparead
Welcome to Microsoft Exchange Server 2013 Cumulative Update 2 Unattended Setup
Performing Microsoft Exchange Server Prerequisite Check
Prerequisite Analysis COMPLETED
Configuring Microsoft Exchange Server
Organization Preparation COMPLETED
The Exchange Server setup operation completed successfully.
I did but still no luck, I could not see the SystemMailbox or FederatedMailbox.
anyone help me?