8 Solutions to Resolve the “DHCP Lookup Failed” Error on Windows?

When attempting to connect to a network, your Chromebook may discover a DHCP Lookup Failed. It is usually due to an old operating system, defective router firmware, or if your Network uses a frequency, your Device does not support. The afflicted user usually sees the issue when attempting to connect to a new network. However, some customers began to experience it on a web they had used for an extended period.

Before discovering more thorough remedies to the DHCP Lookup Failed

1. Connect to another network to see any Chromebook hardware issues.
2. Check to see if any other devices can connect to the afflicted Network. If you are using a device administered by a school or enterprise, contact the IT administrator of your organization since the Device may be limited to only connecting to specific networks.
3. Remove any additional electromagnetic interference, such as any Bluetooth device or another router in the area.
4. Ensure that the Network is not configured to utilize a hidden SSID.

Furthermore, turn off the VPN client if you are attempting to utilize a VPN. If you’re using a Wi-Fi extender, remove it because Chromebooks have a history of having problems with them. Furthermore, if a device designed for the United States is utilized in another nation, such as Germany, it may have compatibility concerns with the router.

Solution 1: Restart Chrome and your networking equipment.

A transient software or connectivity malfunction might blame the DHCP Lookup Failed. Therefore, it is a good idea to restart your networking equipment and Device to rule out any such problem.

1. Close down your Chromebook completely.
2. Please turn off your modem/router and unhook it from the power supply.
3. Wait 30 seconds before reconnecting anything to a power source.
4. Wait for the lights on the modem or router to stabilize.
5. Now, turn on the Chrome and connect it to the Wi-Fi network to see if the issue has been fixed.

Solution 2: Modify the Chromebook’s Sleep Settings

If your Chromebook goes to sleep, it may fail to connect to the Network and display the DHCP Lookup Failed message when it wakes up. In this scenario, altering the Chromebook’s sleep settings, so it does not sleep when the lid shuts may alleviate the problem.

1. Navigate to your Chromebook’s Settings.
2. Now, choose Device, followed by Power.
3. Now, enter the When Idle menu and select Turn off Display but Stay Awake.
4. Then, enter the dropdown menu when the lid is closed and choose to Stay Awake.
5. Save your changes and then quit Settings.
6. Then, restart your Device and reconnect to the Network to see whether the DHCP Lookup Failed has been resolved.

Please remember that this will prevent your Chromebook from going entirely to sleep when you close the lid. Only the screen will go dark. It is a workaround, not a solution.

Solution 3: Reconnecting to the Wi-Fi Network

There might be a network outage, causing the connection between your Device and router to be unstable. To eliminate any such issues, disconnect from the Network and rejoin it. Please keep in mind that you will have to re-enter your password.

1. Click on the Wi-Fi symbol in the bottom right corner of the window, then on the network name.
2. Click the gear icon to open the Network Settings window.
3. Then choose Wi-Fi.
4. Now, disconnect from the Network (if you are connected) and click the right arrow next to the Network you wish to forget.
5. Select the Forget button.
6. Now restart your smartphone and connect to the Network to see whether everything is working correctly.

Solution 4: For the Network, use Google Name Servers.

DNS servers are critical in converting IP addresses into human-readable hostnames. Therefore, the DHCP Lookup Failed may be returned if your Device cannot query the DNS server. Switching to Google Name Servers may address the problem in this case.

1. Navigate to your Chromebook’s Settings.
2. Now, under Network, select the Wi-Fi option.
3. Then, on the faulty Network, click the right arrow.
4. Now scroll down and choose “Name Servers” from the dropdown menu.
5. Now pick the “Google Name Servers” option.
6. Connect to the Network again to see whether the DHCP Lookup Failed problem has been repaired.
7. If not, restart your machine, then repeat the process and choose “Automatic Name Servers” in the network settings.
8. Connect to the Network once more to see if the Chromebook is free of the error.
9. If not, go to your connection’s Network Settings and uncheck “Configure IP Address Automatically.”
10. Then, according to the IP scheme, configure a manual IP address for your Device and restart the Chromebook.
11. Check to see if your Device has recovered from the DHCP Lookup Failed problem after restarting.

Solution 5: Extend the Network’s DHCP address range.

A DHCP server can only connect to a limited number of devices. If the number of devices that may relate to the DHCP Lookup Failed server is reached, for example, if your DHCP server has a limit of 10 instruments and you try to join the 11th Device, the DHCP Lookup Failed may occur.

In this instance, removing specific devices from the Network or increasing the number of devices connected to the Network may resolve the issue. In addition, because of the brand and model of the equipment, the instructions may change from router to router.

1. Open your router’s web portal in a web browser and log in using your credentials.
2. Navigate to the DHCP settings tab now.
3. Raise the DHCP IP range; for example, if the higher range is 192.168.1.200, increase it to 192.168.1.253. Some routers also declare the number of devices connected to a Wi-Fi network.
4. Save your modifications before exiting the portal.

Now connect to the Network to see if the DHCP Lookup Failed problem has been resolved.

Solution 6: Modify Your Wi-Fi Network’s Frequency Band

Because network standards and speeds are constantly changing, routers can now broadcast at a more incredible frequency/band channel than ever before. Therefore, if your router broadcasts at a frequency your Device does not support, you may receive the DHCP Lookup Failed.

Switching to a network frequency advised by your Device may remedy the problem of DHCP Lookup Failed in this scenario. Depending on the making and model of your router, the instructions may change.

1. To log in, open your router’s web interface and input your credentials.
2. Go to the Wireless settings tab now.
3. Change the band; for example, if 2.4 GHz is selected, move to 5 GHz; if 5 GHz is selected, go back to 2.4 GHz.
4. Save your modifications before exiting the portal.
5. Now restart your PC and connect to the Network to see whether everything is working correctly.

Solution 7: Update Your Chromebook’s Chrome OS

Your Device’s operating system is constantly updated to keep up with the ever-changing technological advances and to repair reported issues. If your Device’s Chrome OS is out of date, this might be the source of the problem. In this case, upgrading your Device’s operating system to the most recent build may resolve the issue.

1. Connect your Device to the internet using either an Ethernet connection or Wi-Fi.
2. Now go to your Chromebook’s Settings.
3. Click on About Chrome OS in the window’s left pane.
4. Then choose to Check for Updates.
5. Restart your Device after upgrading the operating system.
6. Then, reconnect to the affected Network to see if the Device is free of errors.

Solution 8: Reset Your Router/Modem to Factory Defaults

The DHCP Lookup Failed issue might be caused by corrupt firmware on your router or modem. In this scenario, rebooting your router/modem to factory settings may resolve the issue of DHCP Lookup Failed. It is typically a simple method that aids in the resolution of many network-related difficulties. However, due to the wide variety of router/modem makes and models, it is nearly challenging to cover all of the procedures to reset your modem/router, but the overall approach is the same.

Two easy ways to reset your router/modem are via the Device’s button (on specific versions, the power button may also be used to reset the Device) or the Device’s online portal.

1. Turn on your router/modem.
2. Locate the Reset button, which is usually placed on the Device’s bottom or rear.
3. Now, for at least 30 seconds, hit the reset button. After that, you might need to use something a little sharp, such as a paperclip.
4. Then, without pressing the power button, wait for the router to reset and turn on. It usually takes between 30 and 60 seconds.
5. If your gadget lacks a button, see the user manual to see if the power button may be used to reset it.

You may also do the reset procedure on your gadget using its online site.

1. Navigate to the default gateway in a web browser (you may locate the default gateway by using the IPConfig command in the Command Prompt or by checking the router’s back).
2. Then provide your login information to access the online portal (the default login and password is ‘admin’).
3. Locate the reset option now. It is usually found in the General or System tabs. Locate and choose the option Reset Settings. Then confirm the reset and wait for the procedure to finish.
4. After restarting the router/modem, restart your machine and connect to the Network to see whether the DHCP Lookup Failed problem has been fixed.

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If nothing else has worked, try upgrading or downgrading the firmware on your router. If the problem of DHCP Lookup Failed persists, take your Chromebook to an authorized technician shop of the manufacturer to have it checked for any hardware faults.