Cluster network name resource failed registration of one or more associated DNS names(s) because the access to update the secure DNS Zone was denied. Cluster Network name: 'Cluster Name' DNS Zone: '<DomainName>' Ensure that cluster name obiect (CNO) is granted permissions to the Secure DNS Zone.
Generally, Cluster IP addresses will register in the DNS server automatically when we set the Cluster IP addresses during cluster creation, so the IP addresses DNS record of Cluster is dynamic.
If we meet some issues registering the Cluster IP addresses automatically, as a workaround, we can create the DNS record manually in the DNS server.
Below is an example of Cluster IP address and Node IP DNS record in my lab:
I would suggest we use dynamic DNS records for both cluster IP addresses and Cluster nodes IP addresses, so that if they changed, they can be updated in the DNS server.
If your cluster A record is not that, please try to delete the wrong A record and try to offline the Cluster name and bring online the CNO again, the Cluster name A record will be re-register in the DNS server.