Get Your Router Working: Fixing DNS Server Issues Made Easy

If you’re experiencing internet connection problems, the culprit may be your DNS server. A Domain Name System (DNS) server translates web addresses into IP addresses, but when it fails, you may have trouble accessing websites. The good news is that fixing DNS server issues on your router is easier than you might think. In this article, we’ll cover common issues and provide step-by-step solutions to help you troubleshoot and repair your router.

DNS server issues are common, and they can occur for a variety of reasons, from outdated firmware to incorrect settings. Some common symptoms of DNS server issues include slow internet speeds, inability to connect to specific websites, and intermittent connectivity. However, by following a few simple steps, you can diagnose and fix the problem quickly and easily.

Whether you’re a beginner or an experienced network administrator, this article will guide you through the process of fixing DNS server issues on your router. By the end of this post, you’ll have a better understanding of what causes these problems and how to resolve them. Keep reading to learn more!

Don’t let DNS server issues slow down your internet experience. With our easy-to-follow guide, you’ll be able to diagnose and fix these issues quickly and efficiently. Whether you’re a tech-savvy user or a beginner, we’ve got you covered. So, let’s dive in and get your router working again!

What Causes DNS Server Issues on Routers?

When your internet suddenly slows down or disconnects completely, it can be incredibly frustrating. One of the most common culprits is DNS server issues on your router. Understanding what causes these problems can help you troubleshoot the issue and get back to browsing the web with ease.

Incorrect Router Configuration: One of the main causes of DNS server issues is an incorrect router configuration. This can happen when settings are changed, or when updates are made to the router software. If your router is not properly configured, it can cause DNS errors.

Outdated Router Firmware: Outdated router firmware can also cause DNS server issues. If your router software is not up-to-date, it can be vulnerable to bugs and security vulnerabilities, which can affect its performance and cause DNS errors.

ISP Issues: Your Internet Service Provider (ISP) can also be a cause of DNS server issues on your router. Your ISP may experience outages or other problems that can affect your connection and cause DNS errors. Checking your ISP’s status can help identify whether this is the cause of your issues.

Malware or Viruses: Malware or viruses can also cause DNS server issues. If your computer or network is infected with malicious software, it can affect the performance of your router and cause DNS errors. Running regular virus scans and using anti-malware software can help prevent this issue.

Physical Damage: Physical damage to your router can also cause DNS server issues. Damage to the router can affect its performance and cause connectivity problems. Checking for physical damage and ensuring that your router is in good condition can help prevent this issue.

If you’re experiencing DNS server issues on your router, it’s important to understand what may be causing the problem. By troubleshooting these potential causes, you can get your internet connection back up and running smoothly.

Outdated Router Firmware

  1. What is outdated firmware? Firmware is software that is embedded in your router. Outdated firmware occurs when your router’s firmware has not been updated to the latest version, leading to potential security risks and performance issues.

  2. Why does outdated firmware cause DNS server issues? An outdated firmware can cause DNS server issues by preventing your router from communicating properly with the DNS server. This can cause intermittent connection problems, slow speeds, or even a complete loss of internet access.

  3. How can you check if your router firmware is outdated? You can check if your router firmware is outdated by logging into your router’s web interface and checking for any available firmware updates. Alternatively, you can download and run firmware update tools provided by your router’s manufacturer.

  4. How can you update your router firmware? To update your router firmware, you need to download the latest firmware from your router manufacturer’s website and follow the installation instructions provided. Some routers may have an automatic firmware update feature that you can enable.

  5. Why is it important to keep your router firmware updated? Keeping your router firmware updated is important to ensure the security and stability of your network. Outdated firmware can leave your network vulnerable to security threats, and can also cause performance issues and connection problems.

By updating your router firmware, you can prevent many DNS server issues that might be caused by outdated firmware. However, if updating your firmware does not solve the issue, there may be other causes that need to be addressed.

ISP DNS Outages

One of the most common causes of DNS server issues on routers is outages from your internet service provider (ISP). These outages can cause a range of problems, from slow internet speeds to complete loss of connectivity. When your ISP is experiencing a DNS outage, your router won’t be able to connect to the internet, and you’ll need to wait for your ISP to fix the problem.

What causes ISP DNS outages? DNS outages can be caused by a variety of issues, including hardware failures, software bugs, and network congestion. In some cases, natural disasters, like hurricanes or earthquakes, can also cause outages.

How can you check for ISP DNS outages? To check if your ISP is experiencing a DNS outage, you can visit their website or social media accounts for updates. Additionally, you can contact your ISP’s customer support for assistance.

What can you do to fix ISP DNS outages? Unfortunately, there’s not much you can do to fix an ISP DNS outage. Your best bet is to wait for your ISP to fix the problem. However, you can try resetting your router or modem to see if that helps restore connectivity.

How can you prevent ISP DNS outages? Unfortunately, you can’t prevent ISP DNS outages from happening. However, you can take steps to minimize their impact on your internet connectivity. This includes having a backup internet connection, using a mobile hotspot, or having a secondary DNS server configured on your router.

Interference from Other Devices

Another potential cause of DNS server issues on routers is interference from other devices. This can be particularly problematic in households or offices with many devices, as interference can disrupt the signal between the router and the device trying to access the internet.

Some of the most common sources of interference include microwaves, cordless phones, Bluetooth devices, and other routers in close proximity. If you suspect that interference is causing DNS server problems, try moving the router to a different location or adjusting the placement of other devices to reduce signal interference.

  • Device Placement: Ensure your router is placed in an open area away from other devices.
  • Interference: Move cordless phones, microwaves and other electronic devices away from the router.
  • Channel Interference: Use a Wi-Fi scanner to check for nearby routers on the same channel and switch to a less congested one.
  • Bandwidth: Limit the number of devices connected to your router to reduce bandwidth congestion.
  • Compatibility: Check that your router is compatible with the devices that you are trying to connect.

By taking steps to reduce interference, you can help ensure that your router can provide a stable and reliable DNS connection to all of your devices.

Simple Steps to Diagnose Router DNS Problems

Step 1: Check Your Network Status

The first step in diagnosing DNS server issues is to check your network status. Look at the lights on your router to ensure they are all solid green. Check your modem to ensure it is connected to the internet, and if necessary, reset it.

Step 2: Test Your Network Connection

The next step is to test your network connection. Use the ping command in the command prompt to ping a website like Google. If the ping is successful, then your network connection is good. If the ping fails, then there may be an issue with your DNS server.

Step 3: Check Your Router’s DNS Settings

Check your router’s DNS settings to ensure they are correct. Open your router’s configuration page and verify that the DNS settings are set to “automatic” or that they match the DNS settings provided by your ISP.

Step 4: Try Using an Alternate DNS Server

If your router’s DNS settings are correct, but you are still experiencing issues, try using an alternate DNS server. Google Public DNS and OpenDNS are both popular choices.

Step 5: Reset Your Router to Factory Settings

If none of the above steps work, you may need to reset your router to its factory settings. This will erase all of your settings and configurations, so make sure to back up any important data before proceeding.

Check Other Devices for Connection Issues

Step 1: Verify that other devices can connect to the internet. If they can’t, the issue may not be with your router’s DNS server.

Step 2: If other devices can connect to the internet, but the device in question cannot, try restarting the device or resetting its network settings.

Step 3: Check the device’s network settings to ensure that it is configured to obtain DNS server addresses automatically.

Step 4: If the device’s network settings are correct and other devices can connect to the internet, try manually setting the DNS server address on the device to the same address as your router’s DNS server.

By following these steps, you can determine if the issue is with your router’s DNS server or with the device itself. If the issue is with your router, move on to the next steps to diagnose and fix the issue.

Run Network Troubleshooter

If you’re still experiencing DNS issues, running the network troubleshooter can be helpful in diagnosing and fixing the problem. The network troubleshooter is a built-in tool in Windows that scans your network for any issues and provides solutions to fix them.

To run the network troubleshooter, go to your “Settings” and click on “Network & Internet”. From there, click on “Network troubleshooter” and follow the prompts to scan and diagnose any issues.

The troubleshooter will scan your network for issues such as connectivity problems or outdated drivers, and it will automatically provide solutions to fix them. If the troubleshooter is unable to fix the issue, it will provide you with additional steps to take.

Running the network troubleshooter is an easy and convenient way to diagnose and fix DNS issues on your router. It’s always a good idea to run the troubleshooter before attempting any manual fixes, as it may be able to identify and fix the problem quickly.

If you’re still experiencing issues after running the network troubleshooter, you can move on to other troubleshooting steps, such as resetting your router or contacting your internet service provider for assistance.

Perform a DNS Flush

If you’re experiencing DNS server issues with your router, flushing the DNS cache can often resolve the problem. This clears out any corrupt or outdated entries and forces your device to retrieve new ones.

To perform a DNS flush, start by opening the Command Prompt on your computer. Type “ipconfig /flushdns” and press Enter. Wait a few seconds for the process to complete, then restart your computer and try accessing the internet again.

If you’re using a Mac, open the Terminal app and type “sudo killall -HUP mDNSResponder” and press Enter. Wait a few seconds for the process to complete, then try accessing the internet again.

Performing a DNS flush can help fix common DNS server issues such as slow or unresponsive internet, and it’s a simple step you can try before resorting to more advanced troubleshooting methods.

Note that if you’re using a router, you may need to perform a DNS flush on the router itself, which typically involves accessing the router’s settings through a web interface and finding the option to flush the DNS cache.

How to Fix Router DNS Server Issues

If you’ve diagnosed the problem and determined that your router is the source of the DNS issues, here are a few steps you can take to fix it.

Update Router Firmware: Outdated router firmware can cause DNS problems. Check your router manufacturer’s website for updates and install them.

Change DNS Settings: You can try changing your DNS settings to use a different server, such as Google DNS or OpenDNS. This may resolve any issues with your current DNS server.

Reset Router: Resetting your router to its default settings can also fix DNS issues. Check your router’s manual for instructions on how to do this.

Contact Your ISP: If you’re still experiencing DNS issues after trying the above steps, contact your Internet Service Provider (ISP). They may be able to provide additional support or identify a problem with their network.

Manually Change DNS Server Settings

If you suspect that your ISP’s DNS server is causing issues, you can manually change the DNS server settings on your router or individual devices. This can help improve your internet speed and fix DNS errors.

Here are some simple steps to manually change DNS server settings:

  • Step 1: Log in to your router’s configuration page.
  • Step 2: Look for the DNS settings section.
  • Step 3: Enter the IP address of a reliable DNS server, such as Google’s Public DNS (
  • Step 4: Save the changes and restart your router.
  • Step 5: Alternatively, you can change the DNS server settings on individual devices by going to the network settings and entering the DNS server address.

Changing the DNS server settings can help fix internet connection problems and improve speed. If you continue to experience DNS errors, try switching to a different DNS server or contacting your ISP for further assistance.

Updating Router Firmware for Better DNS Stability

If you are experiencing DNS stability issues with your router, updating its firmware is a good way to address the problem. Firmware updates often include bug fixes and other improvements that can help improve the performance of your router.

Before you begin the firmware update process, make sure you have the correct firmware for your router model. You can usually find this information on the manufacturer’s website.

Once you have downloaded the correct firmware, connect to your router’s web interface and navigate to the firmware upgrade section. Follow the on-screen instructions to update your router’s firmware.

During the update process, do not turn off your router or disconnect it from the power source. Doing so could cause permanent damage to the device.

After the firmware update is complete, reset your router to its default settings and reconfigure your network settings. This will ensure that your router is properly set up and ready to use with the new firmware.

Checking for and Installing Firmware Updates

If you’re experiencing router DNS issues, updating your router firmware can help improve stability and performance. To check for updates, visit your router manufacturer’s website and search for the latest firmware version for your router model.

Before updating the firmware, make sure to read the instructions carefully and back up your router settings. Follow the manufacturer’s instructions to install the firmware update, which typically involves downloading a file and uploading it to the router.

After the update is complete, restart your router and test your DNS connection. If you continue to experience issues, consider resetting your router to its default settings and starting the configuration process from scratch.

Keep in mind that updating your router firmware can improve security as well as performance, as firmware updates often address known security vulnerabilities. So, it’s a good practice to check for and install firmware updates periodically.

If you’re unsure how to check for firmware updates or need assistance with the update process, reach out to your router manufacturer’s support team for guidance.

Resetting Your Router to Default Settings

If all else fails, resetting your router to its default settings can often fix DNS issues. This is a drastic measure, as it will erase all of your custom settings, such as passwords, port forwarding configurations, and more. However, it can help resolve persistent DNS problems.

To reset your router to default settings, locate the reset button on the back or bottom of your router. Hold it down for at least 10 seconds until the lights on the router start flashing. This indicates that the router has been reset. Wait for the router to restart, then reconnect your devices to the network and configure your settings from scratch.

Using Third-Party Firmware for Greater Control

If you’re looking for more control over your router’s settings, you may want to consider using third-party firmware. Third-party firmware, such as DD-WRT or Tomato, can provide you with advanced features and greater flexibility.

Before installing third-party firmware, you should do some research to make sure your router is compatible with the firmware you want to use. You should also be aware that installing third-party firmware can be risky, and it may void your router’s warranty.

If you decide to install third-party firmware, be sure to follow the instructions carefully. Make sure you download the correct firmware for your router model, and back up your router’s settings before you begin the installation process.

Preventing Future DNS Server Problems on Your Router

Regular Maintenance: Keep your router updated and check for firmware updates on a regular basis. This can prevent DNS server issues and improve network performance.

Use Reliable DNS Servers: Use reliable and trusted DNS servers to avoid issues with your router. Consider using a paid service with a good reputation to ensure stability and reliability.

Secure Your Network: Make sure your network is secure with strong passwords, encryption, and other security measures. This can prevent unauthorized access to your router and network, which can lead to DNS server issues.

Monitor Your Network: Keep an eye on your network and router activity to identify any unusual or suspicious behavior. This can help prevent DNS server problems and other issues before they occur.

Regular Router Maintenance and Cleaning

Performing regular router maintenance is important to keep it functioning at its best. Check for firmware updates, clean the router regularly, and monitor its performance to ensure it is working properly.

Cleaning your router is also important as dust and dirt can accumulate on the device and affect its performance. Use a soft, dry cloth to wipe down the exterior of the router and avoid using water or any cleaning products that may damage the device.

It’s also important to keep the router in a well-ventilated area to prevent it from overheating. Avoid placing it in a cabinet or other enclosed spaces and make sure it has enough room to breathe.

Keeping Firmware and Software Up to Date

Firmware and software updates can improve the performance and security of your router. Regularly checking for updates is essential for keeping your router up to date. Check your router manufacturer’s website or admin panel for updates. Firmware updates can fix known issues and add new features to your router. You should also regularly check for software updates on your devices, as these can improve compatibility with your router and fix issues that may be causing connectivity problems.

Make sure to follow the manufacturer’s instructions when updating your router’s firmware or software. In some cases, you may need to download a file and manually install it, while in other cases, your router may have an automatic update feature. Be aware that interrupting the update process could damage your router and result in a non-functional device. It’s best to update your router when you have enough time to complete the process.

If you’re having trouble with your router’s connectivity or performance, checking for updates should be one of the first steps you take. Updating your firmware and software can often solve connectivity problems and improve the performance of your network.

When to Call in the Experts for Router DNS Server Help

If you’ve tried all the basic troubleshooting steps and your router is still experiencing DNS server issues, it may be time to call in the experts.

One sign that you may need professional help is if you’re experiencing frequent or recurring DNS server issues despite your best efforts to fix them.

If you’re not comfortable manually changing settings or updating firmware, it’s best to call in a professional to avoid accidentally causing more harm than good.

If you suspect that your router’s hardware is damaged or malfunctioning, it’s best to consult with a professional rather than attempting to fix it yourself.

Finally, if you’re not sure what the problem is or you’ve exhausted all other troubleshooting options, it’s best to call in an expert who can diagnose and fix the issue.

When Multiple Routers Are Involved

If you have multiple routers in your home or office, setting up DNS servers can be a bit tricky. You may experience issues with connectivity, speed, or stability if the settings are not configured correctly. Here are some tips:

  • Ensure each router has a unique IP address: If you have multiple routers, make sure each one has a unique IP address to avoid conflicts and connection issues.
  • Configure each router as a separate network: Configure each router as a separate network to avoid conflicts and to ensure that all devices can communicate with each other.
  • Set up DNS servers on each router: Each router should have its own DNS server settings, even if they are using the same ISP. This will help ensure that all devices on the network can access the internet and communicate with each other efficiently.
  • Use a wired connection for the main router: If possible, use a wired connection for the main router, and connect the other routers as access points. This will help ensure a stable and reliable network.

With these tips, you should be able to set up multiple routers in your home or office without experiencing any major issues with DNS servers or connectivity. However, if you’re still having trouble, it may be best to consult with a professional network administrator or IT specialist for assistance.

When There Are Hardware Issues

If you suspect that the DNS server problem on your router is due to a hardware issue, there are several things you can do to troubleshoot the issue before calling in a professional.

Check all cables and connections: Make sure all cables are properly connected and undamaged. A loose or damaged cable can cause connectivity issues that could be mistaken for a hardware issue.

Check the power supply: A faulty power supply can cause all sorts of issues with your router, including DNS server problems. Make sure your router is receiving power from a reliable source.

Try resetting the router: Sometimes, a hardware issue can be resolved by resetting the router. This can clear any glitches or errors that may be causing the problem. Refer to your router’s manual for instructions on how to perform a reset.

Test with a different device: If you suspect a hardware issue, try connecting a different device to your router to see if the problem persists. This can help determine if the issue is with your router or the device itself.

Contact the manufacturer: If you have exhausted all troubleshooting options and still suspect a hardware issue, it may be time to contact the manufacturer for further assistance. They may be able to provide additional troubleshooting steps or advise you on repairs or replacements.

When the Problem Persists Despite Troubleshooting

If you have tried all the troubleshooting methods and the problem persists, then it may be time to call in the experts. This is particularly true if the issue has been going on for an extended period or if the router is experiencing problems that are beyond your technical knowledge.

When you call in an expert, make sure to provide them with as much information about the problem as possible. This may include details about the router model and firmware version, the symptoms you have observed, and any troubleshooting steps you have already taken.

The expert will likely begin by diagnosing the issue and determining the root cause of the problem. Depending on the issue, they may recommend a software update, a hardware replacement, or a complete overhaul of your network setup.

It is essential to work with a reputable and experienced professional to ensure that your router issues are resolved correctly. Make sure to ask for referrals or read reviews before hiring someone to work on your network.

Finally, if the issue is with your internet service provider (ISP), then they may be responsible for resolving the problem. Contact your ISP to report the issue and follow their recommended troubleshooting steps. If they are unable to resolve the problem, they may need to dispatch a technician to your location.

Frequently Asked Questions

What are some common reasons why DNS server problems occur on routers?

There are several reasons why DNS server problems can occur on routers, such as outdated firmware or software, configuration errors, or issues with the internet service provider.

What are some steps to troubleshoot DNS server problems on a router?

Some steps to troubleshoot DNS server problems on a router include resetting the router, updating firmware and software, checking DNS settings, and contacting the internet service provider.

How can resetting a router help fix DNS server problems?

Resetting a router can help fix DNS server problems by clearing any temporary configuration errors or conflicts that may be causing the issue. This can be done by pressing the reset button on the router or using the router’s web interface to reset to factory settings.

Is it possible to use third-party firmware to fix DNS server problems on a router?

Yes, it is possible to use third-party firmware to fix DNS server problems on a router. Third-party firmware can provide greater control over the router’s settings and allow for more advanced troubleshooting options.

When should you call in a professional to fix DNS server problems on a router?

You should call in a professional to fix DNS server problems on a router if you are not comfortable troubleshooting the issue yourself, or if the problem persists despite your best efforts to fix it.

What are some hardware issues that could cause DNS server problems on a router?

Some hardware issues that could cause DNS server problems on a router include damaged cables, faulty hardware components, or issues with the power supply. In some cases, replacing the hardware may be necessary to resolve the issue.

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