What does Windows error code 9971 (DNS_ERROR_POLICY_ALREADY_EXISTS) mean?

 
Previous Next
DNS_ERROR_SCOPE_ALREADY_EXISTS DNS_ERROR_POLICY_DOES_NOT_EXIST

DNS_ERROR_POLICY_ALREADY_EXISTS

DNS_ERROR_POLICY_ALREADY_EXISTS means a query-resolution or zone-transfer policy with the same name already exists at the server or zone level where the new policy is being created.

What to verify

  • Check whether the policy is server-level or zone-level; the same intended policy may be looked up at the wrong level.
  • Inspect its current action, criteria, processing order, and scope references before modifying it.
  • Do not create parallel policies with near-identical names to work around the error; this makes processing order harder to audit.
Get-DnsServerQueryResolutionPolicy
Get-DnsServerQueryResolutionPolicy -ZoneName "example.com"
Get-DnsServerClientSubnet

Microsoft: Get-DnsServerQueryResolutionPolicy

Microsoft: Add-DnsServerQueryResolutionPolicy

Microsoft: DNS Policies overview

Looking for a different code? Search another status or error code.