What does Windows error code 9980 (DNS_ERROR_POLICY_LOCKED) mean?

 
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DNS_ERROR_SUBNET_ALREADY_EXISTS DNS_ERROR_POLICY_INVALID_WEIGHT

DNS_ERROR_POLICY_LOCKED

DNS_ERROR_POLICY_LOCKED means DNS has a configuration lock on the policy. The policy should not be edited while another policy operation is still applying or rolling back.

What to check

  • Ensure that another administrator, script, or configuration-management job is not changing DNS policies concurrently.
  • Refresh the policy list and wait for the earlier operation to complete before retrying.
  • If the condition persists, inspect DNS Server events for the operation that left the policy locked.
Get-DnsServerQueryResolutionPolicy
Get-DnsServerQueryResolutionPolicy -ZoneName "example.com"
Get-DnsServerClientSubnet

Microsoft: Get-DnsServerQueryResolutionPolicy

Microsoft: Add-DnsServerQueryResolutionPolicy

Microsoft: DNS Policies overview

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