Applies to: Exchange Server 2016

This cmdlet is available only in on-premises Exchange Server 2016.

Use the Set-MigrationConfig cmdlet to edit migration configurations on Exchange servers.

For information about the parameter sets in the Syntax section below, see Exchange cmdlet syntax.

Set-MigrationConfig [-Confirm [<SwitchParameter>]] [-DomainController <Fqdn>] [-Features <None | MultiBatch | Endpoints | UpgradeBlock | PAW>] [-MaxConcurrentMigrations <Unlimited>] [-MaxNumberOfBatches <Int32>] [-Partition <MailboxIdParameter>] [-WhatIf [<SwitchParameter>]]

This example sets the migration system to have a maximum of 50 batches at any time.

Set-MigrationConfig -MaxNumberOfBatches 50

This example sets the migration system to only allow 100 concurrent migrations.

Set-MigrationConfig -MaxConcurrentMigrations 100

You need to be assigned permissions before you can run this cmdlet. Although all parameters for this cmdlet are listed in this topic, you may not have access to some parameters if they're not included in the permissions assigned to you. To see what permissions you need, see the "Mailbox move and migration permissions" section in the Recipients Permissions topic.


Parameter Required Type Description




The Confirm switch specifies whether to show or hide the confirmation prompt. How this switch affects the cmdlet depends on if the cmdlet requires confirmation before proceeding.

  • Destructive cmdlets (for example, Remove-* cmdlets) have a built-in pause that forces you to acknowledge the command before proceeding. For these cmdlets, you can skip the confirmation prompt by using this exact syntax: -Confirm:$false.

  • Most other cmdlets (for example, New-* and Set-* cmdlets) don't have a built-in pause. For these cmdlets, specifying the Confirm switch without a value introduces a pause that forces you acknowledge the command before proceeding.




The DomainController parameter specifies the domain controller that's used by this cmdlet to read data from or write data to Active Directory. You identify the domain controller by its fully qualified domain name (FQDN). For example,




The Features parameter specifies the set of features to enable for the migration system. Use one of the following values:

  • None

  • MultiBatch

  • Endpoints

  • UpgradeBlock




The MaxConcurrentMigrations parameter specifies the maximum number of active migrations that your organization can run at any specific time.




The MaxNumberOfBatches parameter specifies the maximum number of batches that your organization can migrate at any time.




This parameter is reserved for internal Microsoft use.




The WhatIf switch simulates the actions of the command. You can use this switch to view the changes that would occur without actually applying those changes. You don't need to specify a value with this switch.

To see the input types that this cmdlet accepts, see Cmdlet Input and Output Types. If the Input Type field for a cmdlet is blank, the cmdlet doesn’t accept input data.

To see the return types, which are also known as output types, that this cmdlet accepts, see Cmdlet Input and Output Types. If the Output Type field is blank, the cmdlet doesn’t return data.