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Fix: ‘DHCP Lookup Failed’ issue

by Charles Anders
4 minutes read
Fix: 'DHCP Lookup Failed' issue

This article will describe you how to Fix ‘DHCP Lookup Failed’ issue. Chromebook is a new type of computer that is made to do things faster and easier than the ones that are already on the market. They run on Chrome OS, which has all of Google’s best features, as well as cloud storage and better data protection. Dynamic Host Configuration Protocol, or DHCP for short, is a way for devices on the internet to be set up. It gives IP addresses and lets default gateways be set up so that devices on the IP network can connect quickly and easily. This error message shows up when you try to connect to a network.

It means that your device, which in this case is a Chromebook, can’t get any IP address information from the DHCP server. A protocol called DHCP is used to set up devices on IP networks. This protocol lets the device use different network services like DNS and NTP that are based on UDP and TCP. The DHCP error can be caused by things like an old OS, broken router firmware, an invalid frequency, or a hidden SSID. If you’re using a VPN, it could also be because of the VPN. There’s also a chance that the router is from a different country and doesn’t work with your Chromebook. Before you try the solutions on the web to Fix ‘DHCP Lookup Failed’ issue, try connecting to other networks.

Reconnecting to the Wi-Fi Network

There could be a problem with the network that makes the connection between your device and the router unstable. To fix this kind of problem, you should disconnect from the network and then reconnect to it. Keep in mind that you will have to enter the password again.

  1. Click on the Wi-Fi icon in the bottom right corner of the window, and then click on the name of the network.
  2. Now, click on the gear icon to open the window for Network Settings.
  3. Then select Wi-Fi.
  4. Now, if you’re connected, disconnect from the network, and then click the right arrow next to the network you want to forget.
  5. Click the button that says “Forget.”
  6. Now, turn your device off and on again, and then connect it to the network to see if it works.

Extend the DHCP Range of Addresses of the Network

A DHCP server can only connect to a certain number of devices. If the maximum number of devices that can connect to the DHCP server has been reached, for example, if your DHCP server only allows up to 10 devices to connect and you try to connect the 11th device, you may get the DHCP error.

In this case, try taking some devices off the network or increasing the number of devices that can connect to the network. Depending on the brand and model of the router, the instructions may be different.

  1. Open your router’s web portal in a web browser and sign in with your credentials.
  2. Now, go to the Settings menu and click on the DHCP tab.
  3. Then, increase the DHCP IP range. If the highest range is, increase it to Some routers also tell you how many devices can be connected to a Wi-Fi network.
  4. Save the changes you’ve made and leave the portal.
  5. Now, try connecting to the network to see if the DHCP failed error is gone.

Change the Sleep Settings of Chromebook

Chromebook has a known bug where, if you put it to sleep and then wake it up, it might not be able to connect to the network and show the message “DHCP failed.” In this case, the problem might be solved by changing the Chromebook’s sleep settings so that it doesn’t go to sleep when the lid is closed.

  1. Start up your Chromebook and go to Settings.
  2. Now click on Device, followed by Power.
  3. Now, open the When Idle drop-down menu and choose Turn off Display but Stay Awake.
  4. Then, in the When Lid is Closed dropdown, choose Stay Awake.
  5. Now, save the changes you made and leave Settings.
  6. Then, turn your device back on and connect it to the network to see if the error is gone.

Use Google Name Servers for the Network

DNS servers are very important because they turn IP addresses into hostnames that people can understand. If your device can’t talk to the DNS server, it may give you the DHCP failed error. In this case, the problem might be solved by switching to Google Name Servers.

  1. Start up your Chromebook and go to Settings.
  2. Click on the Wi-Fi option under “Network.”
  3. Click the right arrow next to the network that is giving you trouble.
  4. Scroll down and click on “Name Servers” in the drop-down menu.
  5. Choose “Google Name Servers” from the menu.
  6. Connect to the Network and see if the problem with DHCP is fixed.
  7. If not, restart your computer, start the process over, and choose “Automatic Name Servers” in the network settings where you chose “Google Name Servers” before.
  8. Again, connect the Chromebook to the network and see if the error is gone.
  9. If not, open your connection’s Network Settings and turn off the “Configure IP Address Automatically” setting.
  10. Then, according to the IP scheme, give your device a manual IP address and restart the Chromebook.
  11. After you restart your device, check to see if the DHCP error is gone.

Restart Your Networking Equipment and Chrome

The DHCP error could be caused by a temporary communication or software problem. To make sure this isn’t the problem, you should restart your networking equipment and devices.

  1. Do a full Shut Down of your Chromebook. Don’t just close the lid to put it to sleep.
  2. Turn off your modem/router and disconnect it from the wall.
  3. Wait 30 seconds before plugging everything back in.
  4. Wait until the lights on the modem/router are steady.
  5. Now, turn on your Chromebook and then connect it to your Wi-Fi network to see if the error is gone.

Causes of DHCP Errors

A DHCP error can be caused by two things. One is how the computer or device is set up so that a DHCP server can give it an IP address. The other is how the DHCP server is set up. DHCP errors happen when a network’s DHCP server or router can’t automatically change the IP address of a device so it can connect to the network. This leads to a network connection error when you use a web browser to connect to the internet. Problems with DHCP are hard to figure out because the error message doesn’t always say anything about DHCP. If you want to know more information about this Visit Official Microsoft Support site.

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