Azure Active Directory should be used for authentication for Azure Service Fabric Cluster to improve infrastructure security, otherwise unauthorized access may be possible.
At this time, the console UI does not have remediation steps available. For possible CLI remediation, see the product documentation (below) or use Terraform.
In Terraform -
References:
https://learn.microsoft.com/en-us/azure/service-fabric/service-fabric-cluster-creation-setup-aad
https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/service_fabric_cluster#azure_active_directory