Error Message :
In a multi-node configuration, the SQL Agent will not attempt to make a connection to another CP if the CP it is connected to fails.
Root Cause: SQL Agent not identifying other CP's on reconnect.
Update to a fix version listed below or a newer version if available.
Fix Status: Released
Agent SQL 12.0.1 - Available
Agent SQL 11.2.3 - Available
Automation.Engine 12.0.1 – Available
Automation.Engine 11.2.3 - Available
Stop and restart the Agent manually