Although Chromebook is a very light and troublefree device, but it seems that the DHCP lookup failed Chromebook error is a little troublesome. Many Chromebook users have reported this problem in different forums and on many manufacturer’s support pages.As we have hand-on experience of using Chromebook and we have also come across this problem and resolved it quickly. We are writing this post to share how did we resolve this error efficiently.
Chromebook is certainly an awesome device that rarely gives you any trouble while using it, we can say by our experience. Surely other operating systems may give you a very advanced performance which everybody may not require but Chromebook really gives you peace of mind.
Read this post thoroughly to resolve DHCP lookup failed Chromebook error and to understand Chromebook a little better.
DHCP lookup failed Chromebook: Problem Overview
Many users have reported DHCP lookup failed Chromebook error.i his error when they try to connect their Chromebook with the WifI network they get an error notification in the status area “Failed to connect to network DHCP lookup failed”.
Dynamic Host Configuration Protocol (DHCP) is basically a network protocol that allows the server to assign an IP address automatically to the system connects with the network from the pre-defined range of numbers which is called Scope.
DHCP lookup failed, Simply means your Chromebook was not assigned the IP address. There could be several reasons for this issue but you will be able to fic this issue easily with the help of this guide.
There are few things which we need to check and be sure before going to advance troubleshooting. Sometime we may fix this kind of issue with few simple tweaks. Sometimes we may just need to avoid or get rid of a few things that can fix our problem.
Steps to fix DHCP lookup failed Chromebook
- Step-1 : Connect directly without WiFi extender or repeater
- Step-2 : Restart The Router And Chromebook
- Step-3 : Change Router Settings
- Step-4 : Router Firmware Update
- Step-5 : Use Chromebook connectivity diagnostics tool
- Step-6 : Change DNS Settings
- Step-7 : Clear DNS Cache
- Step-8 : Remove preferred network
- Step-9 : Proxy and VPN
Connect directly without WiFi extender or repeater
In many cases, we have observed that WiFi extender and repeater are the real culprits behind DHCP lookup failed error in Chromebook. So we would like to suggest you that try to connect to wifi directly fro the WiFi router without using extender or repeater.
If you able to connect directly and if it resolves your problem, it means extender is the actual cause of his issue. If you want better WiFi coverage and also do not want this problem then we would like to suggest you invest in a high range router or preferably a Google WiFi router.
Restart The Router And Chromebook
If you have not performed this step yet then this is one of the simplest but effective solutions in this kind of problem. A simple restart of the router would not be sufficient we need to perform proper power reset procedure while restarting. To power reset the router, follow the steps below.
- Turn off your Chromebook completely. Select Power from the bottom right (Status Area) or Press and hold the power key for 3 seconds.
- Turn off your router and you must unplug the power cord
- To power reset, you need to wait for a few seconds (approx 10 seconds)
- Now reconnect the power cord and let the router restarted completely
- Now power on Chromebook and let it boot up completely
- Your Chromebook will connect to the WiFi automatically
Now check if the problem has resolved. If you still facing the issue continue with the further fix.
Change Router Settings
Router settings could also be one of the reasons for the DHCP lookup failed error Chromebook. It might be that your other devices are working with the WiFi router you are using but Chromebook is not working and you are getting an error message. The Chromebook has specific router settings required that you need to check.
- Check Wifi security encryption is set to WPA2-PSK with AES Encryption
- Check TKIP, if enable then disable it
- WPA only will no work, select WPA/WPA2 option
- Disable WPS, WMM/QoS
- If you have a dual-band router assign different SSID for both bands. In 2.5 GHz channel set only 1,6 or 11channel, Connect with a different band and check if it works
- Temporarily disable firewall settings and check if it works
- If your router has Bluetooth capabilities then it may sometimes create interference, Turn it off temporarily.
Router Firmware Update
Sometimes router compatibility issue leads to DHCP lookup failed error in Chromebook. Especially if you are using a little old router and you have not updated the firmware of your router. Like any other internet-connected device router manufacturing company also regularly release an update which helps it to perform better, fixing bugs, and enhance security. To Update router firmware follow the steps below.
- Login to you router Admin panel
- Under router admin Panel
- You will find firmware update option under Maintenance, administration, or utilities depending on your router make and model.
- Check your router firmware version and date
- If require to update then you need to download the update file from the router’s manufacturer website as per your model.
- After downloading the update file you need to upload this file from the router firmware update section. In some models, you can directly update firmware from the router admin panel.
After updating the firmware of the router, you need to restart the router and check if it has resolved your problem.
Use Chromebook connectivity diagnostics tool
If you are still not able to connect and getting the same error message, then Chromebook has an inbuilt connectivity diagnostics tool that helps you diagnose and fix the connectivity issue. It is effortless to use and solves major connectivity problems. The new user interface is much more user friendly. To run the Chromebook connectivity diagnostics tool, follow the steps below.
- Click on the app launcher
- You will find get help icon, click on the icon
- On the left pane, you will find getting online
- Click on getting online
- On the right side click on Troubleshoot
- Let the tool diagnose the problem
The connectivity diagnostics tool will diagnose the problem and will try to fix it. You just need to follow the screen instructions.
Change DNS Settings
DNS settings could play a very crucial role in DHCP lookup failed error in Chromebook. Many users have reported simply changing the DNS settings to fix this issue easily. You get three options in the Chromebook of DNS: Automatic name server, Custom name server, and Google name server. You just need to change your DNS to Google Name Server. To change DNS, follow the steps below.
- Click on the status area of Chromebook
- Click on settings
- Under Network, click on WiFi option
- Select Name of the WiFi Network
- It will expand and you will get Name server option on the button screen
- Change name server to Google Name Server
Close this window and check if you can connect to the wifi network without any error.
Clear DNS Cache
As you have change DNS settings of Chromebook, Now you should Clear DNS cache to remove all previous DNS settings completely. It is really simple to perform. Open Chrome and type chrome://net-internals/#dns in the address bar and hit enter. A page will open click on clear host cache.
You have successfully clear DNS Cache. Now try to connect with the WiFi network.
Remove preferred network
Like any other operating system, Chromebook also saves network credentials to help you connect with the same network without asking for a password. As many Wifi network, we get connected, Chromebook saves the password and makes a list of preferred networks. When we encounter network connection then it is advisable to remove all the preferred networks one by one and try to connect again by putting a password of the WiFi. to remove the preferred network, follow the steps below.
- Click on the network icon in the status area
- Click on Settings
- Under internet connection, click on Wifi network
- Then click on preferred networks
- A list of the network will open
- As you will hover on the name of the network you will see X mark, click on it to remove.
- Remove all the preferred network one by one
Now try to connect with the WiFi network and check if it works.
Proxy and VPN
If you are using Proxy and VPN then it could create interference with the wifi network. In many cases, it has been seen that Proxy and VPN triggers DHCP lookup failed error in Chromebook. You should temporarily disable it. After disabling try to connect with the WiFi network.
Contact Official Customer support
If you have tried all the solutions suggested above and still, you are not able to fix this issue then you should contact official customer support. We have provided all the possible fixes for DHCP lookup failed error in Chromebook and most of the users have resolved their issue. If you want you can get additional information from the Chromebook Help center.
You can contact your Chromebook manufacturer support center also like Dell, HP, Lenovo, etc.
Final Words: Conclusion
We hope this post helps you fix the DHCP lookup failed error Chromebook. We have mentioned all the possible fixes which are tested and working and we have explained all the troubleshooting steps in detail to help you resolve this issue easily.
Do let us know if this guide has helped you. You can leave your comment about your experience. Please like & share this post to help others.