The error "ERR_NAME_NOT_RESOLVED" when using a VPN usually indicates a problem with domain name resolution, meaning the browser cannot find the IP address corresponding to the domain name requested. This often happens because the VPN's DNS servers are not functioning properly or there is a conflict in network configurations when the VPN is active. Common causes and fixes include:
- The VPN server may be experiencing connectivity issues or be overloaded.
- Misconfigured VPN settings can lead to DNS resolution failures.
- Conflicting network configurations, such as multiple active network connections, can interfere with DNS resolution.
- Outdated or corrupted local DNS cache can cause the problem; flushing the DNS cache often helps.
- Firewall or antivirus software may block DNS requests when the VPN is active.
- Changing DNS settings to reliable public DNS servers (e.g., Google DNS or Cloudflare) can resolve issues.
Steps to troubleshoot this error when using a VPN include verifying VPN server status, ensuring VPN settings are correct, disabling other active network connections, flushing DNS cache, temporarily disabling firewall/antivirus, and changing DNS servers to public ones.
