Secure Event Connector Troubleshooting If none of these scenarios match yours, open a case with Cisco Technical Assistance Center. Troubleshooting SEC Onboarding FailuresTroubleshooting Secure Event Connector Registration FailureTroubleshooting NSEL Data FlowsEvent Logging Troubleshooting Log FilesGenerating SEC Bootstrap data failed.SEC Status is Inactive in CDOThe SEC is "online", but there are no events in CDO Event Logging PageSEC Cleanup CommandUse Health Check to Learn the State of your Secure Event Connector