DNS_ERROR_ZONESCOPE_ALREADY_EXISTS 0x800726DF

Error code 9951 · HRESULT 0x800726DF

WINDOWS

The scope already exists for the 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_ZONESCOPE_ALREADY_EXISTS is a Windows error code (system error 9951, returned as HRESULT 0x800726DF) reported by Windows. Its official message is: “The scope already exists for the zone.”

How to fix DNS_ERROR_ZONESCOPE_ALREADY_EXISTS

  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_ZONESCOPE_DOES_NOT_EXISTDNS_ERROR_ZONESCOPE_FILE_WRITEBACK_FAILEDDNS_ERROR_ZONESCOPE_IS_REFERENCEDDNS_ERROR_DEFAULT_ZONESCOPEDNS_ERROR_INVALID_ZONESCOPE_NAMEDNS_ERROR_NOT_ALLOWED_WITH_ZONESCOPESDNS_ERROR_LOAD_ZONESCOPE_FAILED

Source: Microsoft WinError.h

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