Ethernet Not Working? How to Fix Wired Connection
Wired connection not working? Check the cable, port, adapter and IP settings in order with these fixes.
A wired connection should be the most reliable link you have, so when Ethernet fails it is usually something physical or a simple setting. Messages like “Network cable unplugged”, “Unidentified network” or “No internet” each point to a different step below.
A wired connection should be the most reliable link you have, so when Ethernet fails it is usually something physical or a simple settings mistake. Start with the cable and port, then move to the device and router.
Start with the cable and port, then move to the device and router.
Fixes in order
- Reseat the cable at both ends until it clicks.
- Try another cable. Damaged clips and bent cables fail often.
- Try another router port and check that its LAN light turns on.
- Restart the router and computer.
- Check the adapter is enabled. Windows: Network Connections, right-click Ethernet, Enable.
- Update or reinstall the Ethernet driver in Device Manager.
- Set IP to automatic. A leftover static IP causes “Unidentified network”.
- Renew the address: run
ipconfig /releaseandipconfig /renew. - Reset the network stack:
netsh winsock resetandnetsh int ip reset, then restart. - Check speed and duplex. If the link is stuck at 10 or 100 Mbps, replace the cable with Cat5e or better.
I start with the cable and port before I touch a single setting.
What the error tells you
| Message | Likely cause |
|---|---|
| Network cable unplugged | Cable, port or adapter |
| Unidentified network | No IP from router, static IP set |
| 169.254.x.x address | DHCP failed. See our 169.254 guide |
| Connected, no internet | Router or ISP problem |
| Slow wired speed | Old cable or 100 Mbps port |
The 169.254 address is the clue I look for first when the error names itself.
Mac and console tips
- Mac: System Settings, Network, Ethernet, Details, TCP/IP, Renew DHCP Lease.
- USB-C adapters: try another adapter or port.
- Consoles: run the network test and set IP to automatic.
For me, the Renew DHCP Lease button is the first Mac fix I try.
Cable and port quick checks
- Look at the port lights on the router and computer. No light usually means no physical connection.
- Swap the cable for one you know works.
- Try a different port on the router.
- Look for bent pins inside the port on the computer.
- Make sure the cable clicks in firmly. Broken clips cause intermittent drops.
Cables do fail, especially thin flat ones and those that have been bent around furniture or stepped on. A dark port light is the first thing I check before I blame the cable.
Ethernet cable categories
- Cat5: old, 100 Mbps. Replace it.
- Cat5e: gigabit, fine for most homes.
- Cat6: gigabit and up to 10 Gbps over short runs.
- Cat6a and Cat7/8: 10 Gbps and more; only needed for multi-gig setups.
If your computer shows a 100 Mbps link on a gigabit plan, the cable or a damaged wire inside it is the likely cause. The Cat5e row is the one I point at for most homes.
Check the link speed on Windows
- Open Settings, Network & internet, Ethernet.
- Look for Link speed (Receive/Transmit).
- 1000/1000 Mbps means gigabit. 100/100 means something is limiting it.
- Try a different cable or port if you see 100 Mbps.
When I check a wired link, the 1000/1000 reading is the number I want to see.
Fix Ethernet on Windows
- Open Device Manager and check the Ethernet adapter has no warning icon.
- Right-click it and Disable, then Enable.
- Update the driver from the motherboard or laptop maker.
- Run
netsh int ip resetandnetsh winsock resetas administrator, then restart. - Check no VPN or virtual adapter is set as the main connection.
My first stop is the Disable-then-Enable trick, before any driver reinstall.
Ethernet on consoles and TVs
Consoles and smart TVs usually connect over Ethernet automatically, but if WiFi was set up first they may keep trying WiFi. Go to the network settings and choose Wired or LAN connection, then run the connection test. If it fails, try another port on the router and a different cable before assuming the device is faulty.
The Wired-or-LAN setting is the one I check first when a console keeps using WiFi.
Ethernet through walls and floors
If you want a wired connection in a room far from the router, you don’t always need to drill holes. Flat Ethernet cables run neatly under carpets and along skirting boards. Powerline adapters use your electrical wiring, and MoCA adapters use TV coax. Each gives a more stable connection than WiFi for consoles, PCs and TVs.
For a far room, the flat cable under the carpet is the route I try first.
