RESOLUTION 1:
Use IP address for monitoring the SQL Server host and both SQL Server or Windows domain account authentication can be used in the hostname field in the Agent Status Properties of the SQL Server agent and the Host Name Override field of the WindowsAgent.
Note: The hostname may be replaced by the IP address in the database, hosts, and infrastructure dashboard with this change. An alternative may be to update the hosts file on the FglAM to include the IP address, servername, and fully qualifield domain name.
RESOLUTION 2:
Execute SQL Server Management Studio when querying "select @@servername". Use this specific name output for in the hostname field of the Agent Properties monitoring the host.
RESOLUTION 3:
Use the SQL Server authentication instead of Windows Authentication (domain/user )in the properties of the monitored agent.