Switch the active and standby devices within an FTD HA pair by forcing a failover. Note that if you recently applied a new certificate to the active device and have not deployed changes, the standby device retains the original certificate and failover will fail. The active and standby devices must have the same certificate applied. Use the following procedure to manually force a failover:
- In the navigation bar, click Devices & Services .
- Select the active device of the FTD HA pair.
- In the Management pane, click High Availability.
- Click the options icon .
- Click Switch Mode. The active device is now on standby, and the standby device is now active.