Checking The Health Of a Domain Controller After Promotion
After a Windows Server is promoted to a domain controller, these are some steps to verify all components are functioning properly.
Check inbound and outbound AD replication by using the command -> REPADMIN /SHOWREPL /REPSTO
If the DC is a Global Catalog Server, check it has finished the build of the GC partitions and it is advertising itself as such by using the command -> Get-WinEvent -LogName "Directory Service" | ?{$_.Id -eq 1119} | fl
Check the SYSVOL has been initialized and finished initial replication by using the command -> Get-WinEvent -LogName "DFS Replication" | ?{$_.Id -eq 4604} | fl
To obtain additional details, run the command -> DCDIAG /C /D /V