Disable DNS over HTTPS (DoH) in Google Chrome: A Comprehensive Guide

DNS over HTTPS (DoH) is a privacy-enhancing technology that encrypts your DNS queries, making it harder for your internet service provider (ISP) or other third parties to see which websites you're visiting. While this offers significant privacy benefits, some users may prefer to disable DoH for various reasons, such as compatibility issues or a preference for using a custom DNS resolver.

This guide provides a comprehensive overview of how to disable DoH in Google Chrome, covering different methods and addressing potential challenges.

Why Disable DoH?

• Compatibility Issues: Some older network configurations or specific applications might not work correctly with DoH.
• Network Management: Network administrators may want to control DNS resolution for security or monitoring purposes.
• Custom DNS Resolver: You may prefer to use a specific DNS resolver (like Cloudflare or Google Public DNS) which isn't automatically supported by DoH in your current configuration.
• Troubleshooting: Disabling DoH can help troubleshoot network connectivity problems.

Methods to Disable DoH in Chrome

1. Using Chrome Flags (Experimental):

This is the most direct method, but remember that Chrome flags are experimental and might change or be removed in future updates. Proceed with caution.

1. Type chrome://flags in the Chrome address bar and press Enter.
2. Search for "DNS over HTTPS" or "DoH".
3. You'll find multiple flags related to DoH. The key ones to look for are usually related to enabling or disabling DoH globally or for specific providers. Look for options that allow you to disable DoH. The exact flag names might vary slightly across Chrome versions. Common flags include: dns-over-https, dns-over-https-mode
4. Set the selected flag to "Disabled".
5. Restart Chrome for the changes to take effect.

Warning: Using Chrome flags involves potential risks. Always back up your data before making changes to flags.

2. Using Your Operating System's DNS Settings (Recommended):

This is the most reliable and recommended method. By configuring your system's DNS settings, you override Chrome's DoH settings completely. This approach ensures that all applications, not just Chrome, use your preferred DNS server.

1. Access your operating system's network settings (this varies based on your operating system – Windows, macOS, Linux, etc.).
2. Locate the DNS settings (usually under 'Network' or 'Wi-Fi' settings).
3. Specify your preferred DNS server addresses (e.g., 8.8.8.8 and 8.8.4.4 for Google Public DNS, or 1.1.1.1 and 1.0.0.1 for Cloudflare DNS).
4. Save the changes and restart your computer or router, if necessary.

3. Using a VPN:

A VPN (Virtual Private Network) encrypts your entire internet traffic, including DNS queries. Since the DNS requests are already encrypted by the VPN, the DoH setting in Chrome becomes somewhat redundant.

4. Disabling DoH on your Router (Advanced):

Some routers allow you to disable DoH at the router level. Consult your router's manual for instructions on how to do this. This approach affects all devices connected to the router.

Verifying DoH is Disabled

After attempting any of the above methods, you can verify that DoH is disabled. You can use online tools that detect which DNS resolver your browser is using, or check your browser's network settings (though the information displayed may not always be conclusive). Look for clues indicating that your preferred DNS server address is being used rather than the DoH server provided by your browser.

Conclusion

Disabling DoH in Chrome can be necessary for various reasons. While using Chrome flags provides a direct approach, modifying your operating system's DNS settings is generally preferred for its reliability and system-wide effect. Carefully choose the method that best suits your needs and technical expertise. Remember to always back up your data and proceed with caution when making system-level changes.