When I manually tried to make a failover I got the following errors: "SQL always on Cluster IP address resource listener cannot be brought online because a duplicate IP address was detected on the network. Please ensure all IP addresses are unique. event 1049"
As a result, all the resources of the Cluster\Listener\witness were in a failure state and could not be moved back to online state.
When I aborted the failover attempts Everything returned to normal.
version: SQL SERVER 2016 SP2 Enterprise edition 2 nodes (Primary and secondary)
appreciated to receive your response and suggestions
Thanks and Regards