Mastering Active Directory

Verification

After the migration completes, we still need to verify whether it's completed successfully. The following command will show the current domain functional level of the domain after the migration:

Get-ADDomain | fl Name,DomainMode

The following command will show the current forest functional level of the domain:

Get-ADForest | fl Name,ForestMode

Also, you can use the following command:

Get-EventLog -LogName 'Directory Service' | where {$_.eventID -eq 2039 -or $_.eventID -eq 2040} | Format-List

The following screenshot shows the search of event ID 2039 and 2040 in the Directory Service log, which shows the forest and domain functional level updates:

Event ID 1458 will verify the transfer of the FSMO roles:

Get-EventLog -LogName ...