Troubleshoot FDM-Managed HA Creation

Event Description Error

If you attempt to onboard or create an FDM-managed HA pair in Security Cloud Control, the HA pair may fail to form and you may see an error with the following message:

Event description: CD App Sync error is Cisco Threat Response is enabled on Active but not on Standby

If you see this error, then one or both of the devices within the HA pair is not configured to allow the devices to send events to the a Cisco cloud server such as Security Cloud Control, Firepower Threat Response, Or the Cisco Success Network.

You must enable the Send Events to the Cisco Cloud feature from the Firewall device manager UI. See the Configuring Cloud Services chapter of the Firepower Device Manager Configuration Guide of the version you are running for more information.

One of my devices is in a bad state after creating HA

If one of the devices falls into an unhealthy or failed state during HA creation, break the HA pair and resolve the device's state, then recreate HA. The failover history might help diagnose the issue.