Troubleshooting Guide – How to Fix the ‘err_name_not_resolved’ Error Code




The ‘err_name_not_resolved’ error code is a common issue faced by internet users. This error occurs when a web browser is unable to resolve the DNS (Domain Name System) for a particular website. As a result, users are unable to access the desired website. Resolving this error is essential for a smooth browsing experience.

Understanding the Causes of the ‘err_name_not_resolved’ Error Code

DNS Server Issues

DNS is a system that translates domain names into IP addresses, allowing users to access websites using memorable names instead of numerical IP addresses. Various issues with DNS servers can lead to the ‘err_name_not_resolved’ error code.

Common DNS server problems include:

  • Server downtime or maintenance
  • Unresponsive DNS server
  • Incorrect DNS server configuration
  • DNS cache corruption

Incorrect Network Configuration

Network configuration problems can also trigger the ‘err_name_not_resolved’ error code. These issues can occur due to incorrect settings or misconfigurations in the network infrastructure.

Some specific causes include:

  • DHCP (Dynamic Host Configuration Protocol) configuration issues
  • Router misconfiguration or faulty settings

Browser and Cache Problems

The web browser itself and its cache can also contribute to the ‘err_name_not_resolved’ error code. Corrupted browser cache or conflicting browser extensions can hinder the browser’s ability to resolve DNS for a website.

Some common browser and cache problems include:

  • Corrupted browser cache
  • Browser extensions causing conflicts

Troubleshooting Steps to Fix the ‘err_name_not_resolved’ Error Code

Step 1: Troubleshoot DNS Server Issues

To resolve DNS server-related problems causing the ‘err_name_not_resolved’ error code, follow these steps:

  1. Check DNS server status and connectivity: Ensure that your DNS server is functioning correctly and that there is no connectivity issue preventing the browser from reaching the DNS server.
  2. Test alternative DNS servers: Try using alternative DNS servers such as Google Public DNS or OpenDNS to see if the issue lies with the specific DNS server you are currently using.
  3. Clear DNS cache: Clearing the DNS cache can sometimes resolve any corruption or outdated information that may be causing the error. Instructions for clearing the DNS cache vary depending on the operating system you are using.

Step 2: Verify Network Configuration

If the ‘err_name_not_resolved’ error code persists, it is essential to check your network configuration:

  1. Check DHCP settings: Ensure that your DHCP settings are properly configured and that your devices are obtaining the correct IP address and DNS server information.
  2. Restart the router: Sometimes, a simple router restart can resolve network configuration issues. Turn off your router, wait for a few seconds, and then turn it back on.
  3. Disable or reconfigure proxy settings: Proxy settings can sometimes interfere with DNS resolution. Disable any proxy settings or configure them correctly to resolve the error.

Step 3: Address Browser and Cache Problems

If the ‘err_name_not_resolved’ error code still persists, focus on troubleshooting browser and cache-related issues:

  1. Clear browser cache and cookies: Clearing the browser cache and cookies can help remove any corrupted or outdated data that may be causing the error. Each browser has different steps for clearing cache and cookies, so consult the browser’s documentation or settings.
  2. Disable browser extensions: Some browser extensions may conflict with the DNS resolution process. Disable any extensions one by one to identify if any of them are causing the error. Alternatively, you can try using the browser in safe mode, which disables all extensions.
  3. Reset the browser to default settings: If all else fails, resetting the browser to its default settings can often resolve the ‘err_name_not_resolved’ error code. Keep in mind that resetting the browser will remove any custom settings and preferences.

Additional Tips and Best Practices

Here are some additional tips and best practices to ensure a smooth browsing experience:

  • Updating browser and system software: Keeping your browser and operating system up to date ensures that you have the latest bug fixes and security patches.
  • Flushing DNS cache on the operating system level: In addition to clearing the browser’s DNS cache, you can also flush the DNS cache on the operating system level for a more thorough resolution.
  • Running malware scans to detect potential threats: Malware infections can sometimes interfere with DNS resolution. Regularly running antivirus and malware scans can help detect and remove any threats.
  • Checking firewall and antivirus settings for interference: Firewall and antivirus software sometimes block certain websites or interfere with DNS resolution. Ensure that the settings are correctly configured to allow proper browsing.


The ‘err_name_not_resolved’ error code can be frustrating, but with the troubleshooting steps and tips outlined in this guide, you can resolve the issue and enjoy a smooth browsing experience. DNS server issues, network configuration problems, and browser cache conflicts are among the common causes of this error. By following the steps provided and implementing best practices, you can overcome this error and maintain a seamless browsing experience.

Remember, if you encounter the ‘err_name_not_resolved’ error, don’t panic. Take a systematic approach to troubleshoot the issue, starting with DNS server checks, network configuration verification, and browser cache resolutions. With patience and persistence, you can quickly get back to browsing without interruptions.


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