DNS_ERROR_NOT_ALLOWED_ON_UNSIGNED_ZONE 0x800723A1

Error code 9121 · HRESULT 0x800723A1

WINDOWS

This operation is not allowed on an unsigned zone.

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_ALLOWED_ON_UNSIGNED_ZONE is a Windows error code (system error 9121, returned as HRESULT 0x800723A1) reported by Windows. Its official message is: “This operation is not allowed on an unsigned zone.”

How to fix DNS_ERROR_NOT_ALLOWED_ON_UNSIGNED_ZONE

  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_ACTIVE_SKDDNS_ERROR_NOT_ALLOWED_ON_ZSKDNS_ERROR_NOT_ALLOWED_ON_SIGNED_ZONEDNS_ERROR_NOT_ALLOWED_ON_ROOT_SERVERDNS_ERROR_ROLLOVER_ALREADY_QUEUEDDNS_ERROR_BAD_KEYMASTERDNS_ERROR_INVALID_SIGNATURE_VALIDITY_PERIOD

Source: Microsoft WinError.h

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