If you search on the internet, you’ll find many people have had difficulty connecting to the home/public Wi-Fi while using the Chromebook. They receive a DHCP lookup failed error and don’t know how to resolve the DHCP lookup issue. This post provided by MiniTool Solution will discuss the problem and give you some advice.
DHCP Lookup Failed Chromebook
Developed by Google, the Chromebook is used widely throughout the world. However, just like other laptops or tablets, there may be various errors occurred on Chromebook. Recently, I find many people complaining about the DHCP lookup failed issue on the internet; they said the Chromebook is disconnected after connecting to Wi-Fi for a while, but other devices connect just fine. You may be informed that the DHCP lookup failed Chromebook when trying to connect to a network.
What happened? Can you solve the DHCP lookup error? I’ll discuss these topics in this article. But first, let’s take a look at the following case; are you familiar with it?
Failed to connect to network: DHCP lookup failed
I am getting the ‘Failed to connect to network: DHCP failed’ message when a lot but not all of the students at school try to connect to the Wi-Fi. I have rebooted my firewall/router, I have tried restoring the Chromebook to an older version of Chrome OS, I have plenty of available IP addresses for the DHCP to use, I have looked over all of the configurations of my AP’s and Firewall as well. It’s really odd because some people can connect and others can’t. Any help or suggestions are greatly appreciated.– said Nate Bormann in Google Chromebook help forum
The most possible causes of DHCP lookup failure include:
- The Chrome OS is outdated.
- The firmware is corrupted.
- There’s problem with the modem/router.
- The frequency used by network is not supported.
The DHCP error shows up when users try to connect to a new network most of the time. But, there is still chance you encounter the error on a network that has been using for a long time. How to fix when DHCP lookup failed on Chromebook? Please follow the methods mentioned below.
You can find the possible reasons for DHCP error 0x79 and the best fixes for this error in this post.
Fix 1: Connect Chromebook Directly
In some cases, the Wi-Fi extender and repeater can be the real reason for causing DHCP lookup failed error on a Chromebook. If you’re using the extender or repeater when that error occurs, please try to connect your Chromebook directly to the Wi-Fi modem/router.
Fix 2: Restart Modem/Router and Reboot Chromebook
- Shut down your Chromebook completely by pressing & holding the power key for at least 3 seconds or selecting Power from the bottom right status area.
- Turn off the modem/router you’re using and then unplug it from the power supply.
- Wait for a while (at least 30 seconds) before you plug the router back to power.
- The router will be restarted; please wait until the lights are blinking on.
- Power on your Chrome book and try to connect it to the Wi-Fi network.
Fix 3: Reconnect to the Wi-Fi Network
- Click on the Wi-Fi icon at bottom right.
- Select the name of the network after Connected to.
- Click on the Settings icon (look like a gear).
- Select Wi-Fi in the network Settings window.
- Disconnect it.
- Click on the right arrow of the target network.
- Click on the FORGET button.
- Reboot the device and reconnect to the network.
Fix 4: Try to Use Google Name Servers
- Repeat step 1 ~ 4 in fix 3.
- Click on the right arrow of the network you’re using when see the error.
- Scroll down to find Name servers section.
- Choose Google name servers from the drop-down menu.
- Connect the network to see if the error is fixed.
- If not, please restart and repeat this process to try Automatic name servers again.
- If this still failed, please Scroll down to find the Network section and disable Configure IP Address Automatically. Then, set an IP address manually and try again.
You can also try to troubleshoot DHCP lookup failed by changing the sleep settings:
- Select Turn off display but stay awake (when idle).
- Select Stay awake (when lid is closed).
In addition, the following methods may be helpful.
- Clear DNS cache.
- Change DNS settings.
- Update the Chrome OS.
- Update the firmware of router.
- Use connectivity diagnostics tool.
- Remove preferred network connection.
- Reset the router/modem to default settings.