نحوه رفع خطای جستجوی DHCP Failed در Chromebook

Do you get the DHCP lookup failed error in Chromebook when you are attempting to connect to a network? No need to worry! Through this guide, you are going to learn how to fix DHCP Lookup Failed error in Chromebook.

Chromebook چیست؟ What is DHCP Lookup Failed error in Chromebook?

Chromebook is a new generation of computers that are designed to execute tasks in a manner that is quicker and easier than the existing computers. They run on Chrome سیستم عامل that includes the finest features of Google along with cloud storage, and enhanced data protection.

Dynamic Host Configuration Protocol, abbreviated as DHCP, is a mechanism for device configuration on the internet. It allocates IP addresses and allows default gateways to facilitate quick and smooth connections between various devices on the IP network. This error pops up while connecting to a network. It basically means that your device, in this case, Chromebook, is not able to retrieve any information related to IP addresses from the DHCP server.

نحوه رفع خطای جستجوی DHCP Failed در Chromebook

What causes DHCP Lookup Failed خطا in Chromebook?

There are not many known causes of this issue. However, some of them are:

• VPN – VPN masks your IP address and may cause this issue.
• Wi-Fi extenders – They generally don’t gel well with Chromebooks.
• Modem/Router Settings – This too, will cause connectivity problems and result in DHCP Lookup failed error.
• سیستم عامل کروم قدیمی – Using an outdated version of any operating system is bound to create problems on the associated device.

Let’s get to fixing this error with the easiest and quickest methods explained below.

Method 1: Update Chrome OS

Updating your Chromebook from time to time is a great way to fix any errors related to Chrome OS. This would keep the operating system in tune with the latest software and will also prevent glitches and crashes. You can rectify Chrome OS-related issues by upgrading the firmware as:

1. برای باز کردن اخطار منو، روی زمان icon from the bottom-right corner.

2. اکنون ، روی را کلیک کنید چرخ دنده icon to access تنظیمات Chromebook.

3. From the left panel, select the option titled درباره سیستم عامل Chrome.

4. کلیک کنید بر روی بررسی برای به روز رسانی button, as highlighted.

5. راه اندازی مجدد the PC and see whether the DHCP lookup issue is resolved.

همچنین خواندن: نحوه حذف حساب از Chromebook

Method 2: Restart Chromebook and router

Restarting devices is an efficient way to fix minor errors, as it gives your device time to reset itself. Hence, in this method, we are going to restart both, router and Chromebook to possibly fix this issue. Just follow these simple steps:

1. اول ، خاموش Chromebook

2.خاموش the modem/router and جدا کردن آن را از منبع تغذیه

3. صبر کنيد a few seconds before you دوباره به هم متصل it to the power source.

4. صبر کنيد for the lights on the modem/router to stabilize.

5. اکنون ، روشن کن the Chromebook and اتصال it to the Wi-Fi network.

Verify if the error DHCP lookup failed in Chromebook is fixed. If not, try the next solution.

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Method 3: Use Google Name Server or Automatic Name Server

The device will display the DHCP lookup error if it is unable to interact with the DHCP server or IP addresses on a سرور DNS. Therefore, you can use the Google Name server or Automatic Name Server to solve this problem. Let’s see how to do this:

Option 1: Using Google Name Server

1 هدایت به Chrome Network settings از منوی اعلان همانطور که در توضیح داده شده است روش 1.

2 زیر تنظیمات شبکه، را انتخاب کنید از Wi-Fi گزینه.

3. در را کلیک کنید فلش راست available next to the شبکه to which you are unable to connect.

4. Scroll down to locate and select the سرور نام گزینه.

5. کلیک کنید بر روی کشویی جعبه و انتخاب کنید Google Name Servers from the given menu, as shown.

Check whether the Samsung TV Wi-Fi connection issue has been rectified by reconnecting it to the Wi-Fi network.

Option 2: Using Automatic Name Server

1. If the DHCP lookup failed error persists even after utilizing Google Name Server, شروع دوباره Chromebook

2. حال به ادامه مطلب بروید تنظیمات شبکه page as you did earlier.

3. به پایین بروید نام سرورها label. This time, choose Automatic Name Servers from the drop-down menu. Refer to pic given above for clarity.

4. دوباره متصل شوید to the Wi-Fi- network and verify if the DHCP problem has been resolved.

Option 3: Using Manual Configuration

1. If using either server didn’t solve this problem, go to the تنظیمات شبکه یک بار دیگر.

2. Here, toggle off the آدرس IP را پیکربندی کنید بطور خودکار گزینه، همانطور که نشان داده شده است.

3. حال، تنظیم کنید Chromebook IP address manually.

4. راه اندازی مجدد the device and reconnect.

The DHCP lookup failed error in Chromebook error should be fixed by now.

Method 4: Reconnect to the Wi-fi network

Another easy method to fix DHCP lookup failed error in Chromebook is to disconnect it from your Wi-Fi network and reconnect it afterward.

Let’s see how you can do this:

1. کلیک کنید بر روی از Wi-Fi symbol in the lower right corner of the Chromebook screen.

2. خود را انتخاب کنید از Wi-Fi network name. Click on تنظیمات.

3. In the Network Settings window, قطع شدن شبکه.

4. راه اندازی مجدد Chromebook شما

5. سرانجام ، اتصال it to the same network and continue using the device as usual.

Move to the next method if this does not fix the DHCP lookup failed error in Chromebook.

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Method 5: Change Frequency Band of the Wi-Fi network

It is possible that your computer doesn’t support the Wi-Fi frequency that your router offers. However, you can change frequency settings manually to meet the frequency standards of the network, if your service provider supports this change. Let’s see how to do this:

1 راه اندازی کروم و حرکت به router website. ورود به حساب خود.

2 به سمت تنظیمات بی سیم زبانه و انتخاب کنید تغییر نوار گزینه.

3. را انتخاب کنید 5GHz، if the default setting was 2.4GHzو یا بالعکس.

4. در نهایت ، صرفه جویی all changes and exit. 

5. راه اندازی مجدد your Chromebook and connect to the network.

Check whether the DHCP issue is now rectified..

Method 6: Increase DHCP range of Network Address

We observed that removing certain devices from the wi-fi network or manually increasing the number of devices limit helped rectify this issue. Here’s how to do it:

1. In any مرورگر وب، به مسیر خود بروید router website و ورود با اعتبار شما

2. به ادامه مطلب بروید تنظیمات DHCP تب.

3. گسترش دهید DHCP IP range.

For example, if the higher range is 192.168.1.250, expand it to شماره ۱۰۲۹، همانطور که نشان داده شده است.

4. ذخیره the changes and خروج صفحه وب

If the error DHCP lookup failed still pops up, you could try any of the succeeding methods.

Method 7: Disable VPN to fix DHCP Lookup Failed error in Chromebook

If you use a proxy or a VPN to connect to the internet, it may cause conflict with the wireless network. Proxy and VPN have been known to cause DHCP lookup failed error in Chromebook on numerous occasions. You can turn it off temporarily to fix it.

1. بر روی کلیک راست کنید VPN client.

2. تعویض خاموش the VPN, as highlighted.

3. Alternatively, you can حذف it, if it is no longer needed.

همچنین خواندن: دسترسی به سایت ثابت امکان پذیر نیست، IP سرور پیدا نشد

Method 8: Connect without Wi-Fi Extender and/or Repeater

Wi-fi extenders or repeaters are great when it comes to extending the Wi-Fi connectivity range. However, these devices have also been known to cause certain errors like the DHCP lookup error. Therefore, make sure that you connect to Wi-Fi straight from the router.

Method 9: Use Chromebook Connectivity Diagnostics

If you can still connect to the DHCP server and are still getting the same error message, Chromebook comes with an in-built Connectivity Diagnostics tool that will assist you in diagnosing and resolving connectivity issues. Here’s how you can use it:

1. Search for diagnostics in the Start Menu.

2. Click on the Chromebook Connectivity Diagnostics from the search results.

3. کلیک کنید بر روی Run Diagnostics link to start running the tests.

4. The app performs the following tests one by one:

• پورتال اسیر
• DNS
• فایروال
• خدمات Google
• شبکه محلی

5. Allow the tool to diagnose the issue. The connection diagnostics tool will perform a variety of tests and rectify issues در صورت وجود

Method 10: Remove all Preferred Networks

Chromebook OS, like any other operating system, retains network credentials to allow you to connect to the same network without entering the password every time to do so. As we connect to more Wi-Fi networks, Chromebook keeps storing more & more passwords. It also creates a list of preferred networks depending on past connections and data usage. This causes network stuffing. Hence, it is advisable to remove these saved preferred networks and check if the issue persists. Follow the steps given below to do the same:

1. برو به منطقه وضعیت on your screen and click the شبکه ارتباطی Icon then select تنظیمات.

2. در داخل اتصال به اینترنت option, you will find a از Wi-Fi network. Click on it.

3. سپس ، را انتخاب کنید شبکه های ترجیحی. A complete list of all saved networks will be shown here.

4. When you hover over the names of the network, you will see an X mark. Click on it to برداشتن the preferred network. 

6. Repeat this process to حذف کردن each Preferred Network به طور جداگانه.

7. Once the list is cleared, connect to the desired Wi-Fi network by verifying the password.

This should solve the DHCP lookup failed issue. If it doesn’t, proceed to the next solution.

Method 11: Reset the Router to fix DHCP Lookup Failed error in Chromebook

The DHCP problem might be caused by corrupt firmware on your router/modem. In such cases, you can always reset the router by pressing the reset button of the router. This restores the router to default settings and might fix the DHCP lookup failed in Chromebook error. Let’s see how to do it:

1. روشن کن your router/modem 

2. مکان را پیدا کنید دوبارهt button. It is a tiny button located on the backside or right-hand side of the router and looks like this:

3. اکنون دکمه را فشار دهید تنظیم مجدد button with a paper pin/safety pin. 

4. Wait for the router to reset completely for approximately 30 seconds.

5. سرانجام ، روشن کن the router and reconnect Chromebook.

Now check if you’re able to fix DHCP lookup failed error in Chromebook. 

Method 12: Contact Chromebook Customer Support

If you have tried all of the methods listed above and are still unable to resolve the lookup problem, you should contact official customer support. You can also receive more information from the Chromebook Help center.

توصیه می شود:

امیدواریم توانسته باشید fix the DHCP lookup failed error on Chromebook. Let us know which method worked for you the best. Have any queries/suggestions? Drop them in the comment section below.