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  • Writer's pictureChris Keim

Active Directory Replication Diagnostics

Updated: May 11, 2023

Have you ever found yourself submerged in a deluge of event log errors related to Active Directory replication? If you're wondering how to initiate the process of diagnosing Active Directory replication, let's explore some fundamental steps that I've developed for my own reference.


  1. Test Active Directory (AD) Replication. a command prompt as an administrator and run the following commands "dcdiag /test:replications". This verifies AD replication.

  2. Perform an AD synchronization. Run the following command "repadmin /syncall".

  3. Show current replication status. Run the following command "repadmin /showrepl".

  4. Show objects in queue for replication. Run the following command "repadmin /queue".

  5. Show a summary of AD health replication. Run the following command "repadmin /replsummary".

  6. Verify DNS connectivity. Run the following command "dcdiag /test:connectivity".

  7. Check the event viewer on each domain controller.



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