Ethernet Doesn’t Have A Valid IP Configuration

Ethernet Doesn't Have A Valid IP Configuration

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An IP address is an address unique to your computer. It identifies a device on a local network or the internet. Anytime you want to connect to the internet, you must have a valid IP address.

If not, you will struggle to connect to the internet, and will not be able to continue the tasks you have set out to do.

IP connection issues happen when your ethernet does not have a valid IP configuration. This is often caused by the Network Interface Card (NIC).

However, this is solved in various ways. In this article, we will discuss how exactly you can solve IP address configuration issues.

Read On For More!


How To Fix IP Configuration Issues

The following suggestions should help to fix the issues you’re having with your IP address!



Connect your device to the modem

Sometimes, the issue is simple, and the fix is even simpler.

You may be having ethernet connection issues if certain things aren’t connected.

See if connecting to the source (the modem) fixes the issue.



Update your firmware

Sometimes, connectivity issues happen because of the firmware.

You need to find the firmware of your router and modem online, and follow the instructions to update them.

This may solve your connectivity issues.



Flush your DNS

If you use the command prompt to flush the DNS, then this can solve your ethernet connection issues. Here’s how to do it:

  1. Open the command prompt
  2. Type the following three things:
    1. IPconfig/release
    2. IPconfig/flushdns
    3. IPconfig/renew
  3. Once you have completed this step, restart the device



Reboot your computer

Did you try turning it on and off again?

All jokes aside, sometimes, issues on your PC can be fixed by rebooting it.

You can also disable the Fast Startup because this will sometimes cause IP configuration problems. Here’s how to do it:

  1. Press “WIN + S”
  2. Enter the control panel
  3. Select “Control Panel” from the list of results.
  4. Now, click “Power Options”
  5. Once this step is complete, click “Choose what the power button does”
  6. Tap the option to “Change Settings” and find all the settings that are unavailable
  7. Turn off “Fast Startup”

Now you can go ahead and reboot your computer!



Network adapter configuration

If that doesn’t work, you can try configuring your network adapter settings.

Here’s how to do it:

  1. On your PC, go to the “Win + R” run program and run “ncpa.cpl”
  2. Now, you need to right-click the network adapter you have currently selected and go to “properties”
  3. Next, go to “TCP IPV4” in your current modules and select “properties” again
  4. If the options here are automatically set to obtain an IP address, then you should set your own IP address. You should talk to your network admin about completing this step.
  5. If the IP address is set to something else, then you should try setting it to a different address. Alternatively, you can try switching to an automatic assignment.



Restarting the router

If the internet connection issues you’re having lie with all of your devices, and you’re still getting a message stating the issue is “ethernet doesn’t have a valid IP configuration”, then you can try restarting the router.

Turn off your router, modem, and all your devices, and then turn them back on in the following order:

  • Modem
  • Router
  • Device

If this does not fix your IP address connectivity problems, then you may need to invest in a new router. If you still have problems after doing this, then the issue may be with the network card.

If you suspect this to be the issue at hand, then you need to perform a factory reset to your network card and replace it if this still does not fix the issue.



Reinstall the network adapter

Once you have completed the above steps, you should uninstall and then reinstall the network adapter. Here’s how to do it in a few basic steps:

  1. Go to your PC and open “Win + R”
  2. Enter “hdwwiz.cpl” to the input field, and then click “OK”
  3. Locate the ethernet card (you will find it in the network adapter)
  4. Right-click it and then uninstall
  5. Now, you need to reinstall the drivers from the OEM’s website. There are two ways to do this: via a USB device or a Bluetooth transfer.

If you follow these steps, then the problem should be solved!



Disable IPv6

The aim of disabling the IPv6 is to force an IPv4.

There are so many IP addresses on the internet, and while there are millions of combinations of numbers, sometimes it is not enough, and so IPv6 was created to allow for billions of combinations of numbers.

However, with older devices, this can cause infrastructural problems.

So, by disabling IPv6, you may be able to find an IPv4 address that allows you to get back onto the ‘net!

Here’s how to do it:

  1. Open your network
  2. Open the sharing center
  3. Click “change adapter settings”
  4. Right-click your network connection
  5. Click “properties”
  6. Uncheck “TCP/IPV6”
  7. Now, all you need to do is restart the computer. You should re-enable IPv6 if your internet connection issues persist.



Use a MAC address

Sometimes, you will be able to assign a MAC address to the network card. A MAC address will help both local and global networks identify your device.

Many devices will permit you to spoof a different MAC address, even though it is normally hardcoded to the devices. So, if you’re having ethernet issues, it could be because of a conflict with the MAC address. Here’s how to fix it!

  1. Open the command prompt on your computer
  2. Type in “/IPconfig/all”
  3. Find the physical address value on your network adapter and make a note of it
  4. Log onto your network card and enter the MAC address into the field

Once your MAC address has been changed, then the problem should be solved!



Enable the DHCP

This method should only be used on home networks.

First, you must ensure your DHCP is on.

Then, you need to go into the router settings and find the IP addresses.

Once you are inside, make sure you disable Static IP and enable DHCP.

Then, in the PC’s configuration setting, you should enable the option that will automatically retrieve IP addresses.

Finally, restart your PC, and see if this solves the problem.

Final thoughts

If you follow these steps, you should get back on the internet in no time! Sometimes, however, you may need to combine the steps above to get everything in working order again. Try different methods to see what works!

Kevin is the Editor of PC Guide. He has a broad interest and enthusiasm for consumer electronics, PCs and all things consumer tech - and more than 15 years experience in tech journalism.