DHCP Lookup Failed: How To Fix It

Human society today has evolved to remarkable heights. The land on which once stone tools were used for tearing animal hides now nurtures a civilized and sophisticated society. Great thinkers, innovators, and scientists have predominantly shaped the world that we see around us. Well, that is all ancient talk. In today’s world, technology governs almost all the day-to-day processes that take place in our lives. It yields such power over us that it is pretty much impossible for us to imagine even a day without. Especially the internet, which is a very crucial part of our lives. In this article, you shall know how you can get rid of ‘DHCP lookup failed‘ issue. But first of all, what is DHCP? And click here to know about DHCP Lease Time. 

We all use the internet on different devices, from a PC to a smartwatch! That too, no one wants a 2G internet connection; I mean, would you settle for that? Absolutely not! So, the demand for services that provide fast and stable internet connection has been increasing every single day! One such device is a router.

Imagine you forgot you had an online meeting with your colleagues and you’re very late for it. You rush to your device and try to connect it to the router for the meeting. But lo and behold, it doesn’t connect! It says that the ‘DHCP lookup failed‘. This is a pretty common issue and might be very frustrating. If you have a Chromebook or a Windows PC, you might sometimes face a connection issue like this. Read on to know more:

What is DHCP?

Dynamic Host Configuration Protocol, or DHCP, assigns an IP to the device connected to the router. The DHCP server stores the IP, and when the device requests to connect to the router, it dynamically assigns an IP to it. In this way, the device communicates with other IP devices on the network. This IP may be temporary or permanent according to your requirements. 

dhcp Server
DHCP Server

See also: Wireless PAN DHCP Server | Completely Explained

Why Does the ‘DHCP Lookup Failed’ Issue Occur?

This is a connection issue. It occurs because the DHCP server cannot assign an IP to your device. There are some other reasons for why it occurs too:

  • Your operating system is outdated.
  • Your router’s firmware is corrupted.
  • The network’s frequency is not recognized by the devices.
  • The router notes down the assigned IPs in a table, and it is not freed.

Now that you have a brief concept of the DHCP Lookup Failed issue, go through the solutions given below to solve your problem.

How Do I Solve the ‘DHCP Lookup Failed’ Issue?

Solution No. 1: 

The ‘DHCP Lookup Failed’ error might have arisen because of a minor communication issue. To get rid of this error, you can simply reboot your device and the router by following the steps given below:

  1. Shut down your device by clicking on the Start button and then Shut Down.
  2. Now, switch off your router or modem and then disconnect its chords from the power source.
  3. Next, wait for around 15 seconds.
  4. After waiting for some time, re-plug all the cables back in and start your device and the router.
  5. Wait for some time (around five minutes) until all the lights on the router are blinking/turned on.
  6. Try connecting your device to the router and see if it connects.

    reboot your device or router
    Reboot your device or router

 Solution No. 2:

The second method involves extending your router/modem’s range. The DHCP Range determines how many IPs can be allotted to different devices. You just need to log onto your router’s IP address. If you don’t know how to do that, read the steps given below:

  1. Enter your router’s IP address in the location bar of your web browser. The IP can be found at the bottom of your router.
  2. Now, you will need to enter the credentials for logging in.
  3. After logging in, under the Network/LAN title, look for DHCP settings.
  4. Now, extend the DHCP Range. If the upper limit is 192.168.1.200, raise it to 192.168.1.253.
  5. Click on Save to save the changes.
  6. After exiting the portal, try connecting again.

    extending your router range
    Extending your router range

Solution No. 3:

The third method to solve the ‘DHCP Lookup Failed’ issue is to update the firmware. As mentioned above, one of the main reasons this issue might occur is because of a corrupted firmware or due to outdated OS. These updates fix the bugs in your devices and patch security issues. Hence, your network must be up-to-date.

You can update your Chrome OS by following the steps given below:

  1. First of all, make sure your Chromebook is connected to the router.
  2. Now, open Settings on your Chromebook.
  3. Select Advanced and then click on About Chrome OS.
  4. Press on Check for Updates.
  5. The Chromebook will update now. After it has been updated, restart it.
  6. Now, try connecting your Chromebook to the router to see if the issue has been fixed.

    update your firmware
    Update your firmware

Note that this fix is for Chromebook users only.

Solution No. 4:

This fix is for Windows users. First, try rebooting your PC. If that does not help, then follow the steps given below:

  1. Right-click on Start(or hold Windows Key + X).
  2. Now click on the Network Connections option>Change Adapter Options.
  3. Select which network adapter you’re using.
  4. Select Properties and then double-click on the Internet Protocol version 4 (TCP/IPv4) option.
  5. Check if both the settings have been set to ‘Obtain an IP Address automatically.
  6. Close the settings and look if the problem has been resolved.

    Set IP address as automatic
    Set IP address as automatic

Solution No. 5:

The fifth fix requires you to reset your router. It fixes most of the firmware related issues:

  1. Locate a tiny hole at the rear of the router. 
  2. Next, fetch a slender but sturdy tool like a toothpick.
  3. Then, insert this tool into the reset button and keep it pressed for around thirty seconds. 
  4. When you do this, the router will automatically power off, and then it will switch back on. This means that the router has been reset.
  5. Set up your router and now try connecting your device to it.

    resetting the router
    Resetting the router

See Also : Quick Fixes To Solve Netgear Router Orange Internet Light Issue

Conclusion:

These methods must pretty much solve the ‘DHCP Lookup Failed’ issue on your device. As you can see from them, not all methods are suitable for all the devices. The third method is helpful only for Chromebook users and the fourth one only for Windows users.

 

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