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DNS_ERROR_ADDRESS_REQUIRED
Not allowed to remove all addresses.
DNS_ERROR_ADDRESS_REQUIRED is Win32 error 9573 (0x00002565) in Windows DNS client or DNS Server management.
Likely impact: The previous address set remains necessary until a valid replacement is committed.
Typical causes
- an update tries to remove the final address.
- replacement addresses were not added first.
- filtering removed every candidate.
- a transaction orders delete before add.
Troubleshooting steps
- Verify that the server, zone, forwarder, or WINS integration retains an address required for operation.
- Collect target object and address list before change and requested additions and removals.
- Correlate address family and validation results with the DNS Server event log, DNS analytical logging when enabled, packet capture, zone metadata, server configuration, and the exact DNS API request.
Useful evidence
- Collect transaction ordering.
- Collect server event explaining the requirement.
Recovery and retry
Add and validate the replacement address before removing the final existing address.
Related errors
DNS_ERROR_NEED_WINS_SERVERS specifically requires WINS addresses; this code is the general all-addresses removal guard
Example
An automation job replaces forwarders by deleting all old entries first. Changing the transaction to add and validate new addresses before deletion avoids the empty state.
References
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