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Ethernet doesn't have a valid IP configuration | 6 Ways to Fix It

How to Fix "Ethernet doesn't have a valid IP configuration" Error on Windows 10

If you're getting the "Ethernet doesn't have a valid IP configuration" error message, this article will show you how to fix it.

Ethernet doesnt have valid IP configuration

The "Ethernet doesn't have a valid IP configuration" message indicates that your Ethernet connection no longer has a valid IP configuration, and the Windows operating system fails to receive the necessary IP address from the DHCP (Dynamic Host Configuration Protocol).

Dynamic Host Configuration Protocol is a network protocol system responsible for enabling a server to automatically assign an IP address to your computer for a specific network. If you experience "Ethernet doesn't have a valid IP configuration", the computer cannot be assigned an IP address, is unable to connect to a network, and thus, you cannot connect to the Internet.

This error is usually caused by faulty, outdated, wrong network adapter drivers or an incorrect network configuration.

You may need to update or reinstall network drivers, configure network settings, and try other solutions to fix this error. In this guide, we provide possible solutions with descriptions and screenshots.

Video Showing How to Fix the "Ethernet doesn't have a valid IP configuration" Error:

Table of Contents:

Restart Your Computer and Router/Modem

We recommend that you start with the simplest solution that often helps fix the "Ethernet doesn't have a valid IP configuration" error. Save all unfinished work and then shut down the Windows operating system. Additionally, unplug your modem (or router) from the power plug and leave it unplugged for a couple of minutes.

Then plug the device back in and wait until it finishes the startup (self-test) process. Turn on the computer and see if the error is fixed.

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Reset TCP/IP

This method includes entering and executing "netsh" commands into Command Prompt. Netsh is a command-line scripting utility that allows you to, either locally or remotely, display or modify the network configuration of a running computer.

Netsh also provides a scripting feature to run a group of commands in batch mode on a specified computer.

The commands require an elevated Command Prompt opened with administrator privileges. To open an elevated Command Prompt, type "command prompt" in Search and right-click on the "Command Prompt" result. Choose "Run as administrator" to run it with administrative privileges.

reset tcp ip step 1

When you select "Run as administrator", a User Account Control prompt will appear asking if you allow the Command Prompt to make changes to your computer. Click "Yes".

reset tcp ip step 2

Elevated Command Prompt will appear. In the Command Prompt window, type these commands:

netsh winsock reset
netsh int ip reset

reset tcp ip step 3

Command Prompt will display a message stating that you must restart the computer to complete the reset after executing the first command - ignore it and execute both commands by pressing Enter after each.

Restart the computer and see if the "Ethernet doesn't have a valid IP configuration" error is fixed.

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Clear Network Cache

This method includes entering and executing "ipcofig" commands into Command Prompt. Ipconfig is a command-line tool that displays the current configuration of the installed IP stack on a networked computer. Using this tool, we can flush and reset the contents of the DNS client resolver cache and renew the DHCP configuration.

Open Command Prompt as administrator, type the commands below, and press Enter after each:

ipconfig /release
ipconfig /flushdns
ipconfig /renew

clear network cache

When all three commands are executed, restart the computer and see if the "Ethernet doesn't have a valid IP configuration" error is fixed.

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Configure TCP/IP Settings Manually

If resetting TCP/IP and clearing the network cache does not solve the problem, manually configure TCP/IP settings.

Open the Run dialog box by right-clicking the Start menu and selecting "Run" from the contextual menu or pressing Windows key + R.

configure tcp ip settings manually step 1

In the open Run dialog box, type the "ncpa.cpl" command and press Enter on the keyboard or click "OK". This will open the Network Connections window.

configure tcp ip settings manually step 2

In the Network Connections window, you should see all available connections. Find the Ethernet connection, right-click it, and then select "Properties" from the contextual menu.

reset tcp ip step 4

In Ethernet Properties, look for "Internet Protocol Version 4 (TCP/IPv4)" or "Internet Protocol Version 6 (TCP/IPv6)", depending on which one you are using. Select (highlight) it and click "Properties".

configure tcp ip settings manually step 3

If there is a configured static IP address, you are unable to connect to the Internet and you receive "Ethernet doesn't have a valid IP configuration" when using it, try to switch to the "Obtain an IP address automatically" and "Obtain DNS server address automatically" options, and then click "OK".

configure tcp ip settings manually step 4

If these options were set by default and you have not performed any configurations, you can try to enter the static IP address details, such as IP address, subnet mask, default getaway, the preferred and alternate DNS server. You can use our screenshot as an example.

Click "OK" and restart the computer to see if this solution fixes the "Ethernet doesn't have a valid IP configuration" error.

configure tcp ip settings manually step 5

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Reinstall or Update Network Adapter Driver

A device driver is software that informs the operating system and other software how to interact with particular hardware. If the appropriate driver is not installed, the device might not function properly. To reinstall a network adapter driver, use Device Manager.

To open Device Manager, right-click the Start button and select the "Device Manager" result from the contextual menu, or type "device manager" in Search and click the "Device Manager" result.

reinstall or update network adapter driver step 1

In Device Manager, you will see a list of devices connected to your computer. Find "Network adapters", expand it, and right-click on the networking device. Choose "Uninstall" from the drop-down menu.

reinstall or update network adapter driver step 2

You will be asked to confirm the uninstallation. Click "OK". Mark the "Delete the driver software for this device" checkbox if you see this option.

reinstall or update network adapter driver step 3

You will need to restart your PC for the changes to take effect. Restart your computer and see if this fixed the "Ethernet doesn't have a valid IP configuration".

If Windows does not install the missing (uninstalled) drivers, go to Device Manager and, right-click your computer name, select "Scan for hardware changes". It should detect missing drivers and install them.

reinstall or update network adapter driver step 4

To update network adapter drivers, follow the same steps and choose the "Update driver" from the contextual menu option when right-clicking on the network adapter device.

reinstall or update network adapter driver step 5

You will be asked to search for updated driver software automatically or to browse your computer for driver software. If you select the first option, Windows will search your computer and the Internet for the latest driver software for your device.

If you select the second option, you must manually locate and install the drivers. Using this option requires having previously downloaded the driver on your computer or USB flash drive. We recommend that you select the first option and then follow the instructions.

If the first option does not solve the problem, download the latest network adapter drivers from the manufacturer's website.

reinstall or update network adapter driver step 6

You can also use third-party software to update drivers automatically. In this case, we recommend the Snappy Driver Installer (SDI), a powerful free driver updater tool for Windows. You can download Snappy Driver Installer from here.

reinstall or update network adapter driver step 7

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Temporarily Disable Your Antivirus

If you recently installed some antivirus software, this may be causing the "Ethernet doesn't have a valid IP configuration" error. Some users have reported that uninstalling their antivirus (Avast, for example) solved the problem. If disabling (or uninstalling) your antivirus helps, we recommend that you switch to another antivirus software package.

If you are not sure how to disable your antivirus software, read this guide, which includes instructions on disabling some of the most popular antivirus programs.

We hope this guide was helpful and you were able to fix this error by applying one of the methods. If none of the methods solved the problem, contact your Internet Service Provider (ISP) and check if there are any issues with the local Internet connection.

If you know of other solutions to this problem not mentioned in our guide, please share them with us by commenting below.

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About the author:

Rimvydas Iliavicius

Rimvydas is a researcher with over four years of experience in the cybersecurity industry. He attended Kaunas University of Technology and graduated with a Master's degree in Translation and Localization of Technical texts. His interests in computers and technology led him to become a versatile author in the IT industry. At PCrisk, he's responsible for writing in-depth how-to articles for Microsoft Windows. Contact Rimvydas Iliavicius.

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