Skip to main content

How to Fix an Invalid Ethernet IP Configuration

I enjoy sharing troubleshooting tips and advice to help solve various technical issues.

Ethernet problems? Try these 10 easy solutions.

Ethernet problems? Try these 10 easy solutions.

How to Fix an Ethernet Valid IP Configuration Error (10 Solutions)

"Ethernet doesn't have a valid IP configuration" is an error that occurs when your computer cannot connect to IP from the router side. But this error also occurs when a router has an issue.

Sometimes drivers, network devices, and auto-configuration services can't work properly for some reason and this error occurs.

Your Ethernet device may have a problem or problem with the router for IP configuration in rare cases. This error also occurs when the computer cannot communicate properly with the router.

Solution 1: Restart Computer and Router

This is the easiest way to start troubleshooting this issue.

Try to restart both the computer and router and check again for IP error. In 50 percent of cases, it solves the problem.

Solution 2: Check Network Adopter Settings

  1. Press Windows key + R key to open run window and type ncpa.cpl.
  2. The network connection window will open; right-click on Ethernet and click on properties.
  3. Now, double click on Internet Protocol Version 4 (TCP/IPv4).
  4. Now, select these options Obtain an IP Address Automatically and Obtain DNS Server Address Automatically.
  5. Now, restart your computer and router.

Solution 3: Reinstall Network Adopter

If there are any problems with the network adopter, this step will solve the issue.

  1. Press Windows key + R key to open RUN and type hdwwiz.cpl and hit enter.
  2. Now, in the network adaptors, right-click on Ethernet connection and click uninstall.
  3. Now, restart your computer, and it should reinstall drivers automatically. If it doesn't reinstall the drivers automatically, then download them from the manufacturer's websites and install them manually.
Sometimes the answer to your Ethernet problems is as simple as unplugging and plugging the cable.

Sometimes the answer to your Ethernet problems is as simple as unplugging and plugging the cable.

Solution 4: Renew IP Address From the Command Prompt

If you have tried to change the IP address manual but cannot solve the issue, try this solution.

  1. Press the Windows key and type CMD, right-click on it, and run as administrator.
  2. In the command prompt, type netsh Winsock reset and hit enter.
  3. Now, type netsh int IP reset and hit enter and restart your computer.
  4. Now, open the command prompt again and type IPconfig /release, IPconfig /flushdns, IPconfig /renew, hit enter after typing each of these commands.
  5. Now restart your computer.

Solution 5: Enable DHCP (if Disabled)

DHCP must be enabled to configure your network and assign your IP address automatically.

  1. Open services by pressing the Windows key and type services.
  2. Now, look for the DHCP client and start the service if it is disabled.

Solution 6: Run the Troubleshooter

  1. Open settings by pressing Windows key + I.
  2. Now, click on update and security.
  3. Now, choose to troubleshoot.
  4. Now, under internet options, click on run the troubleshooter.

Solution 7: Run a Disc Scan

  1. Open command prompt as administrator.
  2. Now, type chkdsk c: /f and hit enter.
  3. Wait for the scan to finish and see if the problem is solved.

Solution 8: Run SFC Scan

  1. Open command prompt as administrator.
  2. Now, type sfc /scannow.
  3. Please wait for the scan to finish and restart your computer.

Solution 9: Disable Your Antivirus Software

Sometimes antivirus software blocks some network files and other core system files, so to solve the error, try disabling the antivirus software.

Solution 10: Update BIOS (Use Extreme Caution)

Ethernet does not work properly in rare cases if there is a problem with BIOS, so updating it is necessary.

Be very careful about updating BIOS because a little mistake can break the entire BIOS setup.

More Ethernet Troubleshooting Tips

For a quick fix, first, restart the router, unplug and re-plug the Ethernet cable.

  • See if there is any sign of damage in the cable; change the cable if necessary.
  • Check Ethernet port for both router and computer.
  • Try reinserting the Ethernet cable couple of times and see if the problem solves.

In rare cases, it may be a problem with the router's firmware.

  • Try to upgrade the firmware of the router to the latest version. In the router settings, there are settings like access control settings (ACL).
  • Try disabling this setting and restart the router.
  • Swap the LAN port and try to connect again.
  • See if other devices are blocking your computer from accessing and assigning IP addresses.

This article is accurate and true to the best of the author’s knowledge. Content is for informational or entertainment purposes only and does not substitute for personal counsel or professional advice in business, financial, legal, or technical matters.

© 2021 Dhruv Joshi