Обнаружение ошибок на сетевом подключении.

Добавить подраздел StatMon в 

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Network\Connections\

Добавить DWORD значение ShowLanErrors

https://www.raymond.cc/blog/detect-packet-errors-in-your-network-lan-connection-status/

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Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Network\Connections\StatMon]

"ShowLanErrors"=dword:00000001

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win+R>cmd>netstat -e