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DNS_ERROR_RCODE_YXRRSET
DNS_ERROR_RCODE_YXRRSET means the requested update required a resource-record set not to exist, but the matching name and type already exist. The owner name can be valid; the conflict is specifically with the record set.
What to check
- Inspect the exact name and record type that the update tried to create.
- Check for duplicate dynamic registration or an automation job that treats an existing record as a new one.
- Change the update policy or replace the record deliberately only after confirming ownership and intended data.
Get-DnsServerResourceRecord -ZoneName "contoso.com" -Name "host"Microsoft: DNS system error codes
Microsoft: DNS logging and diagnostics
Microsoft: DnsServer PowerShell module
Microsoft: Get-DnsServerResourceRecord
Microsoft: Dynamic DNS Update in Windows and Windows Server
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