It is one of the most frustrating networking problems you can encounter: your phone and laptop connect to Wi-Fi without a hitch, but your wired devices get no internet at all. If you are dealing with wired devices no internet but WiFi works, the problem almost always comes down to your Ethernet cable, network adapter settings, or a configuration mismatch between your router and the wired connection. The good news is that Wi-Fi working fine tells you your modem and internet service are both functional, which means you can narrow the problem down quickly.
Wired and wireless connections use completely separate network adapters, drivers, and pathways inside your operating system. That is why one can work perfectly while the other fails. In my experience troubleshooting this exact issue dozens of times, the fix lands on one of about seven common causes, and you can usually identify the culprit in under 30 minutes using a process of elimination.
Below I walk through a quick fix checklist, a breakdown of the most common causes, and a detailed 10-step troubleshooting guide that covers everything from cable swaps to the Windows Network Reset utility. Whether you are on Windows 10, Windows 11, or even a Mac or Linux machine, these steps will help you isolate and resolve the problem.
Table of Contents
Quick Fix Checklist: Wired Devices No Internet but WiFi Works
Before diving into deep troubleshooting, run through these quick fixes. Each one takes under five minutes and resolves a large percentage of cases.
- Unplug and replug the Ethernet cable at both ends. A loose RJ45 connection is the number one cause.
- Swap the cable with a known working one. Damaged cables often look perfectly fine on the outside.
- Try a different LAN port on your router. Individual ports can fail while others keep working.
- Restart your computer and then restart your router by unplugging it for 30 seconds.
- Check the Ethernet LED indicators on both your router port and your computer’s network jack. No lights means no physical link.
- Disable and re-enable the network adapter in Windows Settings under Network Connections.
- Temporarily disable your antivirus to test whether it is blocking the wired connection.
If none of those quick fixes resolve the issue, move on to the detailed troubleshooting steps below.
Common Causes: Ethernet Not Working but WiFi Is
Understanding why your Ethernet is not working but WiFi is requires looking at the components that are unique to the wired path. Here are the most frequent culprits I encounter.
Faulty or Damaged Ethernet Cable
Ethernet cables take physical abuse over time. Bending, pinching, or stepping on a cable can break the internal wires while leaving the outer jacket intact. Cat5e and Cat6 cables have eight individual copper wires inside, and if even one pair is damaged, the connection may drop entirely or fail to negotiate a link. I have seen cables that tested fine last week suddenly fail due to a kink developed behind a desk.
Always keep a spare cable handy for exactly this scenario. Swapping cables is the fastest way to rule out physical damage.
Loose or Worn RJ45 Port Connections
The RJ45 port on your computer, router, or switch can wear out after years of plugging and unplugging cables. The small metal contacts inside the port can bend or lose their spring tension, resulting in a connection that clicks in but does not make solid electrical contact. If your cable wiggles loosely in the port or the LED indicators flicker when you move the cable, a worn port may be the issue.
DHCP and IP Configuration Issues
DHCP (Dynamic Host Configuration Protocol) is the service your router uses to assign IP addresses to connected devices. If DHCP is not working properly for wired connections, your computer may pull a 169.254.x.x APIPA address, which is a self-assigned fallback that means no valid IP was received. This results in a status of “connected but no internet.” Static IP misconfigurations, where a device is set to an IP outside your router’s subnet, produce the same symptom.
Network Adapter Driver Problems
Ethernet drivers can become corrupted, outdated, or incompatible after a Windows update. I see this complaint constantly in tech support forums: everything worked fine until the system updated overnight, and now the wired connection is dead. The Ethernet adapter driver is separate from the Wi-Fi driver, so an update that breaks one will not affect the other.
Firewall or Antivirus Interference
Third-party security software, particularly antivirus suites like Avast, Norton, or McAfee, can install network filter drivers that block Ethernet traffic while leaving Wi-Fi untouched. This is one of the most overlooked causes, and it is a recurring complaint in Reddit threads on r/HomeNetworking and r/techsupport. The fix is often as simple as disabling the security software temporarily to test.
Router LAN Port Failure
Individual LAN ports on a router can fail due to power surges, age, or manufacturing defects. If your Wi-Fi works but every wired device connected to the same port fails, try moving the cable to a different port. If the problem follows the port, the router is the issue. If the problem follows the cable or the device, you know the router port is fine.
How to Fix Ethernet Connection Not Working: Step-by-Step
This is the detailed troubleshooting sequence I recommend. Work through the steps in order, since each builds on the previous one and the most common fixes come first.
Step 1: Check Cable Connections and Port LEDs
Start with the physical layer. Unplug the Ethernet cable from both your computer and your router, then plug it back in firmly until you hear the click. Now look at the LED indicators on the router port and on your computer’s network jack.
A solid green light typically means a connection at 1000 Mbps (Gigabit), while a solid amber or orange light usually indicates a 100 Mbps or 10 Mbps link. Blinking lights show data activity. No lights at all means there is no physical link, and you should move to the next step.
Step 2: Test With Another Device or Cable
This is the isolation step that saves the most time. Take the Ethernet cable from your non-working device and plug a different device into the same router port. If the second device connects fine, the problem is with your original device, not the cable or router. If the second device also fails, try swapping the cable. This process of elimination tells you exactly which component is at fault.
I always recommend keeping a spare Cat5e or Cat6 cable in a drawer for exactly this test. A 10-foot cable costs very little but saves hours of guesswork.
Step 3: Restart All Network Devices Properly
A proper restart is different from a quick reboot. Shut down your computer completely. Unplug your router and modem from power. Wait at least 30 seconds to allow capacitors to fully discharge and the router to clear its ARP cache and DHCP lease table. Plug the modem in first, wait for it to fully boot (usually 1-2 minutes), then plug in the router and wait for it to stabilize. Finally, turn your computer back on.
This sequence clears stale network state and forces a fresh DHCP negotiation. It sounds simple, but it resolves a surprising number of cases.
Step 4: Verify IP Address Settings (DHCP vs Static IP)
If your computer is set to a static IP that is outside your router’s subnet, it will show as connected but will have no internet access. To check on Windows, go to Settings > Network and Internet > Ethernet > IP assignment and make sure it is set to Automatic (DHCP).
For a deeper look, open Command Prompt and type ipconfig /all. Look for the Ethernet adapter section and check the IPv4 address. If you see an address starting with 169.254, your computer failed to get a valid IP from the router’s DHCP server.
Step 5: How to Read ipconfig Results
The ipconfig command is your diagnostic window into what is happening with your wired connection. Here is how to interpret the key fields.
IPv4 Address: If it starts with 192.168.x.x, 10.0.x.x, or 172.16.x.x, you have a valid private IP from your router. If it starts with 169.254.x.x, DHCP failed and you need to investigate the router or cable further.
Default Gateway: This should show your router’s IP address (commonly 192.168.1.1 or 192.168.0.1). If it is blank, your computer is not communicating with the router over the wired connection.
DHCP Enabled: Should read “Yes” unless you have a specific reason for a static IP. DHCP Server: Should show the router’s IP. If blank, your router is not responding to DHCP requests on the wired side.
DNS Servers: Should show your router’s IP or your ISP’s DNS servers. Missing or incorrect DNS entries can cause “connected but no internet” because your computer cannot resolve domain names.
Step 6: Update or Reinstall Network Adapter Drivers
Outdated or corrupted Ethernet drivers are a leading cause of wired connectivity issues, especially after Windows updates. To update your driver on Windows 10 or 11, right-click the Start button and select Device Manager. Expand the Network adapters section, right-click your Ethernet adapter (often labeled Realtek, Intel, or Killer), and select Update driver > Search automatically for drivers.
If Windows does not find an update, try uninstalling the driver completely and restarting your computer. Windows will reinstall a fresh driver on boot. For the most current version, visit your motherboard or computer manufacturer’s website and download the Ethernet driver directly.
I have fixed stubborn “ethernet connected but no internet” issues multiple times simply by rolling back to a previous driver version after a problematic Windows update installed an incompatible one.
Step 7: Check Firewall and Antivirus Settings
Third-party security software can install network filter drivers that silently block wired traffic. This is a well-documented issue with several popular antivirus programs, and users on r/techsupport frequently report that disabling their antivirus immediately restores Ethernet connectivity.
To test, temporarily disable your antivirus or firewall software and check whether the wired connection comes back. If it does, you need to add an exception for your Ethernet adapter or network, or switch to a different security solution. Do not leave your antivirus disabled permanently. Instead, use this test to identify the cause, then configure the software to allow wired traffic.
Windows Defender Firewall can also block wired connections in rare cases. Go to Settings > Privacy and security > Windows Security > Firewall and network protection and verify that your Ethernet (wired) network profile is not blocking outbound connections.
Step 8: Windows Network Reset Utility
Windows 10 and 11 include a built-in Network Reset utility that reinstalls all network adapters and resets all networking components to factory defaults. This is a powerful fix that resolves stubborn issues when nothing else works, and it is one of the most underused solutions I see in tech support forums.
To access it on Windows 11, go to Settings > Network and Internet > Advanced network settings > Network reset. On Windows 10, go to Settings > Network and Internet > Status > Network reset. Click Reset now and confirm. Your computer will restart, and all network adapters will be reinstalled. You will need to reconnect to Wi-Fi afterward.
This reset clears the ARP cache, flushes DNS resolver cache, resets Winsock catalog, and reinstalls TCP/IP. It is essentially a clean slate for your networking stack. After the reset, plug your Ethernet cable back in and test the connection.
If you prefer the command-line approach, open an elevated Command Prompt and run these commands one at a time: ipconfig /flushdns, netsh winsock reset, netsh int ip reset, arp -d *, and ipconfig /release followed by ipconfig /renew. These achieve a similar reset without the full reinstall.
Step 9: Factory Reset Your Router
If all the above steps fail, a factory reset of your router can resolve deep configuration issues that affect only the wired side. Locate the small reset button on the back or bottom of your router (usually recessed inside a pinhole). Use a paperclip to hold it for 10-15 seconds until the router’s lights flash and it reboots.
Be aware that a factory reset erases all custom settings including your Wi-Fi name, password, port forwarding rules, and any DHCP reservations. You will need to reconfigure everything. Only do this as a last resort, and note your important settings beforehand if possible.
After the reset, reconnect your wired device and test. If wired connections work on the fresh router configuration, something in your previous settings was blocking the Ethernet path.
Step 10: Hardware Failure vs Software Issue Diagnosis
If nothing has worked so far, you need to determine whether you are dealing with a hardware failure or a software issue that has not been caught yet. Here is how I approach it.
If the cable works on another device but not yours: The problem is your computer’s Ethernet adapter or driver. Try a USB-to-Ethernet adapter as a workaround. If that works, your built-in Ethernet port or controller may have failed.
If no device works on any router port: The router’s LAN switch may have failed. Test by connecting a device directly to the modem (if your modem has an Ethernet port). If that works, the router needs replacement.
If the problem started after a storm or power surge: Your Ethernet port or router LAN port may have been damaged by a surge. Ethernet ports are particularly vulnerable because the cables run between buildings and floors. A surge protector with Ethernet protection can prevent this in the future.
If the problem appeared after a Windows update: Try rolling back the update or using System Restore to a point before the update installed. If that fixes it, you can block the problematic update from reinstalling.
Prevention Tips for Wired Network Stability
Once you fix the issue, a few preventive habits will keep your wired connection reliable going forward.
Update drivers proactively. Check your motherboard manufacturer’s website every few months for Ethernet driver updates. Do not rely solely on Windows Update, which sometimes pushes older or buggy versions.
Use quality cables. Cat5e is sufficient for most home Gigabit connections, but Cat6 offers better shielding and future-proofs your setup for faster speeds. Avoid running cables parallel to power lines, which can cause electromagnetic interference.
Keep router firmware current. Log into your router’s admin panel (usually 192.168.1.1 or 192.168.0.1) every few months and check for firmware updates. Updated firmware fixes bugs that can affect LAN port behavior.
Use surge protection with Ethernet pass-through. Power surges can travel through Ethernet cables and damage network ports. A surge protector with RJ45 in and out jacks provides an extra layer of defense for your wired equipment.
Label and organize your cables. A tangled mess of unlabeled cables behind your desk leads to accidental disconnections and makes troubleshooting harder. Use cable ties and labels to keep things organized.
When to Contact Your ISP
In most cases of wired devices getting no internet while Wi-Fi works fine, the ISP is not the problem. However, there are a few scenarios where contacting your ISP makes sense.
If you have eliminated every device-side cause and your router’s LAN ports all fail, your ISP-provided gateway (modem-router combo) may have a hardware defect. Many ISPs replace these at no charge if the unit is still under their rental agreement.
If you recently changed internet plans and your wired speed dropped to zero while Wi-Fi continued working, your ISP may have pushed a configuration update that affected the Ethernet ports on their equipment. Call them and ask specifically about LAN port provisioning on their gateway.
When you call, be specific. Tell them Wi-Fi works fine but wired connections do not, and list the troubleshooting steps you have already performed. This saves time and helps the support agent escalate to the right tier quickly.
FAQ’s
Why does my Ethernet say no internet but Wi-Fi works?
Your Ethernet says no internet because the wired connection uses a separate network adapter, driver, and cable path from Wi-Fi. The most common causes are a damaged Ethernet cable, a loose RJ45 connection, a DHCP configuration issue, an outdated network adapter driver, or firewall software blocking wired traffic. Check the LED lights on your router port first, then swap cables and test another device to isolate the problem.
Why is my hardwired internet not working?
Hardwired internet stops working for several reasons: faulty Ethernet cables, worn RJ45 ports, DHCP not assigning a valid IP address, corrupted network adapter drivers, antivirus software blocking wired traffic, or a failed LAN port on your router. Start by checking cable connections and LED indicators, then restart your devices, verify DHCP is enabled, and update your Ethernet driver.
Why is my Wi-Fi working but not my cable connection?
Your Wi-Fi works but your cable connection does not because they operate on independent hardware paths. Wi-Fi uses a wireless adapter and radio signal, while your cable connection uses an Ethernet adapter, physical cable, and router LAN port. Test the cable on another device, try a different router LAN port, check IP address settings, and run the Windows Network Reset utility to identify and fix the issue.
Why does my device connect to Wi-Fi but no internet?
If your device connects to Wi-Fi but gets no internet access, the issue is typically a DNS problem, an IP address conflict, or a router configuration error rather than a cable issue. Try forgetting the Wi-Fi network and reconnecting, restart your router, flush your DNS cache using ipconfig /flushdns in Command Prompt, or check whether other devices on the same network can access the internet.
Conclusion
When you are facing the problem of wired devices getting no internet but Wi-Fi works fine, the key is understanding that your wired and wireless connections are completely independent systems. That independence is actually helpful because it tells you your internet service and modem are working, narrowing the problem to the cable, adapter, driver, or configuration on the wired side.
Work through the 10-step troubleshooting guide in order, starting with the quick physical checks like cable swaps and LED indicators before moving to software-level fixes like driver updates and the Windows Network Reset utility. In the vast majority of cases, the solution is found within the first five steps.
If you have tried every step and your wired connection still fails, the issue is likely a hardware failure in your Ethernet port, network adapter, or router LAN switch. A USB-to-Ethernet adapter is an inexpensive way to confirm whether the problem is your built-in port, and a replacement router resolves cases where the LAN switch has failed.