When your computer can't connect to the network, you may see an error message that says "A network cable is disconnected" and a red "X" on your taskbar or in Windows Explorer. This message may appear only once every few days or once every few minutes, depending on the nature of the problem, and can even occur when you're on Wi-Fi.
How to Fix 'Network Cable Disconnected' Error in Windows 10/11
Disconnected network cable errors have several possible causes. Typically, the message appears on a computer when an installed Ethernet network adapter tries unsuccessfully to establish a local network connection.
Reasons for failure may include defective network adapters, bad Ethernet cables, or malfunctioning network device drivers.
Some people who upgraded from older versions of Windows to Windows 10 have also reported this issue.
