Migrate arbitration mailboxes from Exchange 2010 to Exchange 2016

Instant Solution - Kernel Migrator for Exchange

Exchange/Office 365 migrations are quite easy with professional tools like Kernel Migrator for Exchange. This tool helps to manage mailbox and public folder migrations involving different Exchange versions and deployment types. Also, this tool helps with all tasks starting from the pre-migration analysis to the preparation of reports after the migration.

Move arbitration mailboxes

As a part of Exchange 2016 services configuration (for more, see Part 4 of this series), you can move arbitration mailboxes from Exchange 2010 to Exchange 2016.

Moving arbitration mailboxes is essential to log Exchange 2016 cmdlets in administrator audit log and also to perform eDiscovery searches. These system mailboxes help Exchange 2016 organization to store a lot of information like administrator audit logs, Unified Messaging data (dial plans, custom greetings, & menus), eDiscovery search metadata, etc. This is how you can move arbitration mailboxes:

  • Step 1: Move the Migration mailbox (using Exchange 2016 Management Shell)
  • Step 2: Move the system mailboxes (using Exchange 2016 EAC)

Step 1: Move the migration mailbox (using Exchange 2016 Management Shell)

Migration mailbox is the first system mailbox to be moved to Exchange 2016 server. This is done using the Exchange Management Shell cmdlets on the Mailbox Server.

  1. In the Mailbox Server, open the Exchange Management Shell.
  2. Run the cmdlets to view the list of Exchange 2016 mailbox databases:
    Get-MailboxDatabase | Where {$_.AdminDisplayVersion -Like “*15.1*”} |
    Format-Table Name, ServerName

  3. Now copy the name of the required mailbox database (the database to where the migration mailbox is to be moved).
  4. Now, run the cmdlets in the syntax:
    New-MoveRequest “Migration.8f3e7716-2011-43e4-96b1-aba62d229136”
    -TargetDatabase “<mailbox database name>”

  5. To verity the migration, run the cmdlets:
    Get-Mailbox “Migration.8f3e7716-2011-43e4-96b1-aba62d229136”
    -Arbitration | Format-List Name, Database, ServerName,

  6. Check the value of AdminDisplayVersion property. If it is Version 15.1 (Build xxx.xx), the migration is successful.

Step 2: Move the system mailboxes (using Exchange 2016 EAC)

The migration of the other mailboxes can be done only after the migration of the Migration mailbox as in the previous step. This is how you can migrate the remaining migration mailboxes:

  1. In EAC, go to recipients > migration. Click + (New), and click on Move to a different database.
  2. Select the users you want to move and click + (Add) (on the new local mailbox move page).
  3. Now add the system mailboxes (on the Select Mailbox page), one by one and click Add.

    When all the mailboxes are selected, click OK.
  4. Click Next when all the system mailboxes are added.
  5. Give a name for the migration batch, and provide the Target database name; click Next.
  6. Now (on the Start the batch page), provide the notification settings, and choose the required options and click New.
  7. To verify the migration, run the cmdlets on Exchange Management Shell.
    Get-Mailbox -Arbitration | FL Name, Database, ServerName,

  8. Now, see the value of the property AdminDisplayVersion. If you find it Version 15.1 (Build xxx.xx), the migration is done.

In addition to configuring internal/external URLs and migrating system mailboxes, you need to configure SCP and change the DNS records (for this, see part 6 of this series).


You can move your migration mailbox from Exchange 2010 to Exchange 2016 using the Exchange management shell. And the other system mailboxes can be moved using EAC.

Instant Migration Tips : A single Exchange Migration solution for migration in different scenarios

Migration requirements of many organizations are different. Kernel Migrator for Exchange helps you simplify:

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  • To-and-fro between any version of Exchange (2003 to 2016)

Intra-forest migrations (Same domain/Different domain)

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To-and-fro migrations between

  • On-premises and Hosted Exchange/Exchange Online (Office 365)
  • Hosted Exchange and Hosted Exchange/Exchange Online (Office 365)
  • Exchange Online (Office 365) and Exchange Online (Office 365)