Windows error 9609 (DNS_ERROR_ZONE_ALREADY

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: A DNS zone with the requested name already exists on the server.

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DNS_ERROR_ZONE_CREATION_FAILED	DNS_ERROR_AUTOZONE_ALREADY_EXISTS

DNS_ERROR_ZONE_ALREADY_EXISTS

DNS_ERROR_ZONE_ALREADY_EXISTS means the server already hosts a zone with that name. The correct response is usually to inspect and reuse or modify the existing zone, not to create a second competing configuration.

What to check

List the matching zone and confirm its type, storage, and replication scope.
Check for a similarly named forward, reverse, or automatic reverse zone.
If the existing zone is wrong, plan a controlled migration or replacement that preserves needed records and delegations.

Get-DnsServerZone -Name "contoso.com"

Microsoft: DNS zone types and zone transfers

Microsoft: DNS architecture, SOA, and authoritative zones

Microsoft: DNS logging and diagnostics

Microsoft: Get-DnsServerZone

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