DNS_ERROR_NOT_UNIQUE 0x80072553

Error code 9555 · HRESULT 0x80072553

WINDOWS

Record for given name and type is not unique.

Windows troubleshooting diagram: Device Manager warning and a system file scan
Windows errors: check drivers, system files and Event Viewer, in that order.

What it means

DNS_ERROR_NOT_UNIQUE is a Windows error code (system error 9555, returned as HRESULT 0x80072553) reported by Windows. Its official message is: “Record for given name and type is not unique.”

How to fix DNS_ERROR_NOT_UNIQUE

  1. Test connectivity to the remote host first (ping, then the exact port)
  2. Check firewall, VPN and proxy rules for the involved process
  3. Run 'ipconfig /flushdns' and 'netsh interface ip reset', then reboot

Related errors

DNS_ERROR_NOT_ALLOWED_ON_ROOT_SERVERDNS_ERROR_NOT_ALLOWED_UNDER_DELEGATIONDNS_ERROR_NOT_ALLOWED_ON_RODCDNS_ERROR_NOT_ALLOWED_UNDER_DNAMEDNS_ERROR_TRY_AGAIN_LATERDNS_ERROR_NON_RFC_NAMEDNS_ERROR_INVALID_PROPERTY

Source: Microsoft WinError.h

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