Hi,@SiddheshSawant-1300
Judging from the error report, the network problem has caused the failure to contact the DC to be migrated.
Whether the port required for the normal work of ADMT is open can not be confirmed through PING/NSLOOKUP. Please refer to the following connection to confirm that the necessary ports have been opened, and the influence of blocked ports on ADMT has been excluded.
- How to configure a firewall for Active Directory domains and trusts:
- ADMT Migration and Network Ports: http://techgenix.com/admt-migration-and-network-ports/
- ADMT Series – 1. Preparing Active Directory : https://blog.thesysadmins.co.uk/admt-series-1-preparing-active-directory.html
Hope this information can help you
Best wishes
Vicky