DNS_ERROR_ALIAS_LOOP 0x800725FA

Error code 9722 · HRESULT 0x800725FA

WINDOWS

An alias loop has been detected with either CNAME or DNAME records.

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_ALIAS_LOOP is a Windows error code (system error 9722, returned as HRESULT 0x800725FA) reported by Windows. Its official message is: “An alias loop has been detected with either CNAME or DNAME records.”

How to fix DNS_ERROR_ALIAS_LOOP

  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_DNAME_COLLISIONDNS_ERROR_NODE_IS_DNAMEDNS_ERROR_NO_BOOTFILE_IF_DS_ZONEDNS_ERROR_DS_ZONE_ALREADY_EXISTSDNS_ERROR_DS_UNAVAILABLEDNS_WARNING_DOMAIN_UNDELETEDDNS_INFO_AXFR_COMPLETE

Source: Microsoft WinError.h

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