How to fix ‘Ethernet doesn’t t have a valid IP configuration’ errors in Windows

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One minute you’re happily surfing the internet or playing a game online and the next you see an error ‘Ethernet doesn’t have a valid IP configuration’. Your network connection has a yellow triangle next to it and you cannot connect to the internet. So what’s going on?

Usually, it means a configuration error between your Windows and the DHCP server. The syntax is its usual descriptive self and while it tells you what is wrong, it doesn’t say where the error is likely to be. That means another process of elimination to get to the bottom of it.

Fix ‘Ethernet doesn’t have a valid IP configuration’ errors in Windows

Usually, a two (or three) pin reset can get everything back working again and fix any ‘Ethernet doesn’t t have a valid IP configuration’ errors. So let us begin there.

  • Reboot your PC and retest.
  • Switch of your modem or router, leave it powered off for 30 seconds and switch it back on again. Retest.
  • If you use Wi-Fi, turn it off and connect your computer using a cable. Retest.

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If none of those fix the error, let’s have a look at your network configuration.

  1. Open a command prompt as an administrator.
  2. Type ‘ipconfig /all’ and hit Enter.
  3. Look for an IPv4 address. It should be a 192.168.xxx.xxx address unless you have it manually configured for something else. If you see 169.xxx.xxx.xxx then the problem is with IPv4.
  4. Type ‘ncpa.cpl’ into the Search Windows (Cortana) box. This will open the Network Connections window.
  5. Right click your network adapter and select Disable.
  6. Right click your network adapter and select Enable.
  7. Let Windows reload the adapter driver and network configuration and retest.

If you’re still seeing the error:

  1. Go back to the Network Connections window.
  2. Right click your network adapter and click properties.
  3. Highlight Internet Protocol Version 4 and click the Properties box underneath.
  4. If ‘Obtain an IP address automatically’ is selected, select the other option and type in the same IP address you see in step 3 above. Add 255.255.255.0 as the Subnet mask and type the numbers for the default gateway you see in Step 3.
  5. Click OK, then Close and then retest your internet connection.

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If it still isn’t working, undo the changes you just made and then update your network drivers.

  1. Go back to the Network Connections window.
  2. Right click your network adapter and click properties.
  3. Click Configure.
  4. Select the Driver tab and then click Update driver.
  5. Select Search automatically and let Windows find an updated driver.
  6. If Windows doesn’t find one, go to the manufacturer’s website and download it manually and install.
  7. Reboot your computer and retest.

As you can see, there are potentially quite a few steps involved in fixing ‘Ethernet doesn’t have a valid IP configuration’ errors in Windows. Fortunately, they are all quite straightforward and with a little perseverance, should have you connected in no time.

If you have any other fixes for this error, let us know below!

Posted by Jamie on October 14, 2016

1 thought on “How to fix ‘Ethernet doesn’t t have a valid IP configuration’ errors in Windows”

Ewan

December 11, 2016 at 11:27 am

So what do we do if the problem is with our IPv4 adress?

Reply

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