- In the navigation bar, click Devices & Services .
- Select the active device of the FTD HA pair.
- In the Management pane, click High Availability.
- Click Failover History. CDO generates a window that details the failover history for both the primary and secondary device since the HA pair was formed.
Note: Failover history is also displayed in the pair's change log, available from the Devices & Services page.