Switch the primary and secondary devices within an FTD HA pair by forcing a failover. 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.