DNS_ERROR_DWORD_VALUE_TOO_SMALL 0x8007255E

Error code 9566 · HRESULT 0x8007255E

WINDOWS

The specified value is too small for this parameter.

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_DWORD_VALUE_TOO_SMALL is a Windows error code (system error 9566, returned as HRESULT 0x8007255E) reported by Windows. Its official message is: “The specified value is too small for this parameter.”

How to fix DNS_ERROR_DWORD_VALUE_TOO_SMALL

  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_DWORD_VALUE_TOO_LARGEDNS_ERROR_INCONSISTENT_ROOT_HINTSDNS_ERROR_BACKGROUND_LOADINGDNS_ERROR_CANNOT_FIND_ROOT_HINTSDNS_ERROR_NOT_ALLOWED_UNDER_DELEGATIONDNS_ERROR_NOT_ALLOWED_ON_RODCDNS_ERROR_NOT_ALLOWED_ON_ROOT_SERVER

Source: Microsoft WinError.h

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