What does Windows error code 9984 (DNS_ERROR_INVALID_CLIENT_SUBNET_NAME) mean?

 
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DNS_ERROR_POLICY_MISSING_CRITERIA DNS_ERROR_POLICY_PROCESSING_ORDER_INVALID

DNS_ERROR_INVALID_CLIENT_SUBNET_NAME

DNS_ERROR_INVALID_CLIENT_SUBNET_NAME means the named client subnet is not valid for DNS Policy configuration. This is a naming/configuration issue before any query matching takes place.

Compare the proposed name with existing client-subnet objects and the exact name used by policy criteria. Correct the configuration identifier first; IP-prefix validity is a separate check performed after the object can be named.

What to check

  • Use a stable logical name for the group of IPv4 and/or IPv6 prefixes.
  • Check the exact spelling in both the client-subnet definition and the policy criterion.
  • Inspect the target server to make sure a similarly named subnet was not created under a different name.
Get-DnsServerClientSubnet

Microsoft: Add-DnsServerClientSubnet

Microsoft: Get-DnsServerClientSubnet

Microsoft: Add-DnsServerQueryResolutionPolicy


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