Quick troubleshooting view
One or more domain controllers no longer respond correctly.
- Lister replication
- Control DNS
- Test RPC
- Correct DNS
- Repairing RPC Connectivity
- Dealing with errors according to code
Contextual technician plan
Identify partners and errors.
repadmin /replucummary.The command should complete without an unexpected error and return data consistent with the intended service.
If the result is normal, keep this layer lower in the hypothesis ranking and continue with the next discriminating check.
If the result is abnormal, preserve the output and investigate this layer before making broader changes.
Each DC must properly resolve the others.
repadmin /showrepl.The command should complete without an unexpected error and return data consistent with the intended service.
If the result is normal, keep this layer lower in the hypothesis ranking and continue with the next discriminating check.
If the result is abnormal, preserve the output and investigate this layer before making broader changes.
Check connectivity and time.
dcdiag / test:dnsThe command should complete without an unexpected error and return data consistent with the intended service.
If the result is normal, keep this layer lower in the hypothesis ranking and continue with the next discriminating check.
If the result is abnormal, preserve the output and investigate this layer before making broader changes.
Repeat the same validation test after the correction and confirm the original symptom is gone. Validate stability before closing the incident.
Before changing configuration, record the current value and a way back.
Escalader before forced deletion of a domain controller.
One or more domain controllers no longer respond correctly.
Causes probables
- DNS
- PRC/firewall
- topology or USN
Diagnostic étape par étape
- 1
Lister replication
Identify partners and errors.
- 2
Control DNS
Each DC must properly resolve the others.
- 3
Test RPC
Check connectivity and time.
Commands utiles
repadmin /replucummary.repadmin /showrepl.dcdiag / test:dnsSolutions possibles
- Correct DNS
- Repairing RPC Connectivity
- Dealing with errors according to code
Escalader before forced deletion of a domain controller.