Troubleshooting DNS Errors

When faced with DNS errors, it is essential to begin by checking your internet connection. Often, a weak or unstable connection can lead to difficulties in resolving domain names. Ensure that your Wi-Fi or Ethernet connection is stable and running smoothly. Consider restarting your router or modem to refresh the connection.

Once you have established that your internet connection is not the issue, the next step is to verify your DNS server settings. Incorrect or misconfigured DNS server settings can result in error messages like ERR_NAME_NOT_RESOLVED. Double-check the settings in your network preferences or control panel, ensuring they match the recommended settings provided by your internet service provider.

Common Causes of ERR_NAME_NOT_RESOLVED Errors

ERR_NAME_NOT_RESOLVED is a common error message that internet users often encounter when trying to visit a website. This error indicates that the domain name system (DNS) was unable to resolve the website's domain name to its corresponding IP address. There are several common causes for ERR_NAME_NOT_RESOLVED errors.

One possible cause is an issue with the DNS server settings. If the DNS server settings on your device are incorrect or outdated, it can result in the inability to resolve domain names. Another common cause is a problem with your internet connection. A slow or unreliable internet connection can lead to difficulty in reaching DNS servers and therefore result in ERR_NAME_NOT_RESOLVED errors. Additionally, DNS cache issues can also cause this error. When the DNS cache becomes corrupted or outdated, it can prevent proper resolution of domain names, leading to the ERR_NAME_NOT_RESOLVED error.

Understanding DNS Resolution

The process of DNS resolution is an essential aspect of how the internet functions. When you enter a website URL into your browser, it sends a request to a DNS server to translate the URL into an IP address. This translation is necessary because computers communicate using IP addresses, which are numerical representations of websites or servers. The DNS server then returns the corresponding IP address to your browser, allowing it to establish a connection and load the website.

Without DNS resolution, accessing websites would be much more complicated. Instead of typing in user-friendly URLs like "," users would need to remember and input the IP addresses of websites they wish to visit. The DNS system simplifies this process and allows users to access websites by using easy-to-remember domain names. Understanding how DNS resolution works is helpful in troubleshooting any potential issues that may arise, such as ERR_NAME_NOT_RESOLVED errors.

Checking Your Internet Connection

In order to troubleshoot and resolve DNS errors, it is essential to first check your internet connection. A stable and reliable connection is necessary for proper communication with the DNS servers and to ensure a successful resolution of domain names. Begin by checking if other devices on your network are experiencing internet connectivity issues. If they are, then the problem may lie with your internet service provider (ISP) or the network equipment. Restarting your router or modem can often resolve temporary connectivity problems. Additionally, ensure that all cables are securely connected and not damaged. If your connection appears to be stable, proceed to verify the DNS server settings on your device.

Verifying DNS Server Settings

To ensure that your DNS server settings are correctly configured, it is essential to verify them periodically. This step is crucial as incorrect settings can lead to issues with website access, email delivery, and overall connectivity. The process of verifying DNS server settings is relatively simple and can be done through the network settings on your computer or directly on your router or modem.

First, you need to access the network settings on your device. On Windows, this can be done by navigating to the Control Panel and selecting the Network and Sharing Center. From there, click on the "Change adapter settings" link and locate the network connection you are currently using. Right-click on the connection and select "Properties." Look for the Internet Protocol Version 4 (TCP/IPv4) or Internet Protocol Version 6 (TCP/IPv6) options, depending on your network configuration. Here, you can manually set the DNS server addresses or opt to obtain them automatically from your internet service provider. Double-check the entered values and click "OK" to save the changes. On other operating systems, such as macOS or Linux, the process may vary slightly, but the general steps involve accessing the network settings and updating the DNS server addresses accordingly.

Clearing DNS Cache

One common solution to troubleshooting DNS errors is to clear the DNS cache on your device. The DNS cache is a temporary storage of the IP addresses and domain names that your device has recently accessed. Clearing this cache can sometimes resolve ERR_NAME_NOT_RESOLVED errors, as it forces your device to retrieve fresh DNS information.

To clear the DNS cache on a Windows computer, you can open the Command Prompt by pressing the Windows key + R and typing "cmd" followed by Enter. In the Command Prompt window, type "ipconfig /flushdns" and press Enter. This will clear the DNS cache on your Windows machine. On a Mac computer, you can open the Terminal and type "sudo killall -HUP mDNSResponder" followed by Enter to clear the DNS cache. Remember to enter your administrative password when prompted.

Flushing DNS Settings

Flushing DNS settings is a common troubleshooting step to resolve DNS errors. When you flush the DNS cache, you essentially clear out any outdated or corrupted DNS records that may be causing issues. This can help in cases where you are experiencing difficulties in accessing certain websites or getting the ERR_NAME_NOT_RESOLVED error.

To flush DNS on a Windows computer, you can open the Command Prompt and type in the command "ipconfig /flushdns" followed by pressing the Enter key. On macOS, you can open the Terminal and enter the command "sudo killall -HUP mDNSResponder". These commands will initiate the process of flushing the DNS cache, and you should see a confirmation message once it is completed.

By flushing the DNS settings, you are essentially starting with a clean slate, allowing your computer to fetch updated DNS information from your ISP or DNS server. This can often resolve issues related to DNS resolution and provide a smoother and more reliable browsing experience. However, if the problem persists even after flushing the DNS settings, you may need to explore other troubleshooting steps or consider reaching out to your internet service provider for further assistance.

Resetting TCP/IP Stack

One effective method for troubleshooting DNS errors is to reset the TCP/IP stack. The TCP/IP stack is a set of protocols that allows communication between computers over a network. Sometimes, due to various factors, the TCP/IP stack can become corrupted or misconfigured, leading to DNS errors and other network issues. By resetting the TCP/IP stack, you can restore the network settings to their default values, resolving any problems that may have arisen.

To reset the TCP/IP stack, you can use the built-in Windows command prompt. First, open the command prompt as an administrator by right-clicking on the Start menu and selecting "Command Prompt (Admin)." Then, type the following command: "netsh int ip reset." This command will reset the TCP/IP stack, and you will need to restart your computer for the changes to take effect. After the restart, your network settings should be reverted to their default values, hopefully resolving any DNS errors you were experiencing. Keep in mind that resetting the TCP/IP stack will also reset any custom network configurations you may have had, so you may need to reconfigure them after the reset.

Disabling Proxy Settings

Disabling proxy settings can be a useful troubleshooting step when encountering DNS errors, particularly the ERR_NAME_NOT_RESOLVED error. Proxy servers act as intermediaries between your device and the internet, handling requests on your behalf. However, in some cases, misconfigured or unreliable proxy settings can lead to DNS resolution issues.

By disabling proxy settings, you can bypass the proxy server and establish a direct connection to the DNS server. This can help determine whether the proxy settings were responsible for the error. To disable proxy settings, access the network settings on your device and navigate to the proxy configuration section. Depending on the operating system and device, you may find the option to disable proxy settings or choose the "direct connection" option. Once you've made the necessary changes, restart your device and check if the DNS error persists.

Using Public DNS Servers

Public DNS servers can be a helpful solution when troubleshooting DNS errors or encountering ERR_NAME_NOT_RESOLVED errors. These servers, operated by various organizations, offer an alternative to your default DNS server provided by your internet service provider (ISP). By using public DNS servers, you can potentially overcome issues related to DNS resolution and improve your internet connection reliability.

One popular public DNS server option is Google Public DNS. It promises speed, security, and stability, aiming to provide users with an enhanced browsing experience. To use Google Public DNS, you need to manually change the DNS server settings on your device or router to the specified IP addresses. Another option is OpenDNS, which offers similar benefits with a focus on family protection by blocking harmful or inappropriate websites. OpenDNS also requires manual configuration of DNS settings on your device or router. These public DNS servers can be particularly useful if you suspect that your default DNS server is causing issues or if you want to utilize alternative DNS services for improved performance and security.


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