Ethernet is one of the most common and perhaps popular technology of LAN and it connects computers in a small geographical area.
The “Ethernet doesn’t have a valid IP configuration” error means that the Dynamic Host Configuration Protocol (DHCP) was unable to get an IP address from NIC, Network Interface Card.
However, this issue can be caused by many things such as, a faulty router, and a wrong IP address given to your computer. Most of the time,this issue is caused by your ISP (internet service provider) but to make sure the problem is not caused by some other reason, we can follow some methods to try to solve this error.
Method 1: Install Reliable Multicast Protocol
- Press both your Windows and X key together and then select Network connections from the context menu.
- Next, on your network adapter, perform a right click and select Properties from the context menu. If you’re using Wi-Fi connection then you may perform this procedure on the relative network adapter.
- Proceed by clicking the Install button below.
- Click on Protocol from the given options and continue by clicking on Add.
- Proceed by selecting the option of Reliable Multicast Protocol and then click the OK button to install it.Connect to your network again to see if the connectivity issue still persists.
Method 2: Uninstalling, and re-installing Network Adapter Driver
- Visit the website of your network adapter manufacturer. Look for the drivers you want to install, preferably the latest one. You need not hurry with the install.
For instance, if you have a Realtek Network adapter, then you must visit the official website of Realtek.
- Press both the Windows and X keys together, and then select Device manager from the context menu.
- Look for Network Adapters and then double click on it to expand the category. Then uninstall your network adapter driver by doing a right click on it and selecting Uninstall from the context menu.
- Proceed by clicking on the OK.
- Lastly, locate your device driver setup file and double click on it. Proceed by following the instructions to download and install the driver.
When the installation process is finished, restart your computer for the relevant changes to show the desired effect. Check to see if the error has been fixed.
Method 3: Modifying Network Adapter settings
- Press both your Windows and X keys together and then select Network Connections from the context menu.
- On your Network adapter, right-click to choose Properties from the pop-up menu.
- Next from the options, choose Internet Protocol Version 4 (TCP//IPv4). Click on it and then click on the Properties.
- Ensure both of these are checked:
Obtain an IP Address automatically and Obtain DNS server address automatically.
- If your error has not been fixed by this, then proceed by selecting Use the following IP address. Next, type in the given IP address in the spaces provided.
Again, select Use the following DNS server addresses and proceed by typing in the following address shown in the image.
Note: Before making any changes, note down your IP addresses in case you might need them in the future.Lastly, click on the OK button to save the relevant changes. Check to see if your issue has been resolved.
Method 4: Using Command Prompt
- Press both your Windows and X keys together then choose Command Prompt (Admin) from the context menu.
Then, when asked to allow to make changes, click on Yes.
- When Command Prompt opens, type in the commands given below. Ensure that no typing errors or mistakes have been made. Press Enter after writing each command.
Now, restart your computer so that changes are implemented.
- Press both your Windows and X keys together at the same time and select Network connections from the pop-up menu.
- Next, right click on your Network adapter and select Disable from the context menu options. Grant permission as an administrator to proceed.
- Again, right click on your network adapter and select Enable from the context menu.
Now, check to see if your problem has been fixed.
If none of the methods have worked for you, then please check your cables and wires and ensure they are properly connected and are not faulty. You can also contact your ISP to complain and assist/guide you.