Mastering Active Directory - Second Edition

Verification

Although the migration is complete, 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 after migration:

Get-ADForest | fl Name,ForestMode

You can also use the following command to verify the forest & domain functional level updates:

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

The following screenshot shows events 2039 and 2040 in the Directory Service log, which verify the forest and domain functional level updates:

Event ID 1458 verifies ...