The specified Windows Server Failover Clustering (WSFC) cluster, '%1!s!', is not ready to become the cluster context of Always ...

The specified Windows Server Failover Clustering (WSFC) cluster, '%1!s!', is not ready to become the cluster context of Always On Availability Groups (Windows error code: %2!s!). The possible reason could be that the specified WSFC cluster is not up or that a security permissions issue was encountered. Fix the cause of the failure, and retry your ALTER SERVER CONFIGURATION SET HADR CLUSTER CONTEXT = 'remote_wsfc_cluster_name' command.