Many users searching for "enable DNS over HTTPS Firefox missing" are frustrated because the DoH setting isn't readily apparent in their Firefox browser. This comprehensive guide will walk you through the possible reasons why you can't find the DoH option and provide step-by-step solutions to enable it.
Several factors can prevent the DNS over HTTPS setting from showing up in Firefox's preferences:
The simplest solution is to ensure you're running the latest version of Firefox. Go to the Firefox menu (three horizontal lines), click on "Help" and then select "About Firefox." Firefox will automatically check for updates and install them if necessary. Restart your browser afterward.
If you're on a managed network, DoH might be blocked by a proxy server or group policy. Contact your network administrator to inquire about enabling DoH or using a different DNS provider. In your Firefox settings, review your network settings, particularly proxy settings. If proxy settings are interfering, disable them temporarily to see if that enables DoH access.
Temporarily disable all your browser extensions. Restart Firefox and check if the DoH setting appears. If it does, re-enable extensions one by one to isolate the conflicting extension.
A corrupted Firefox profile can cause unexpected behavior. Creating a new profile can resolve this issue. Follow these steps:
Caution: Modifying settings in `about:config` can lead to unexpected issues if done incorrectly. Only proceed if you are comfortable with advanced browser settings.
You can manually enable DoH using the `about:config` page. Type about:config in the Firefox address bar and press Enter. Search for network.trr.mode. If this preference is not found, DoH is probably not supported by your Firefox build or blocked by a more restrictive setting.
If you find the setting, double-click on it to change its value. A value of 1 will enable DoH. You can also set the desired DNS provider using `network.trr.uri` setting.
Incorrectly configuring `about:config` settings can damage your browser. Always back up your profile before making significant changes.
If you've tried all the steps above and still cannot enable DoH, contact Firefox support for assistance. They may have more specific troubleshooting steps or be able to diagnose a unique problem affecting your browser installation.
Once you've enabled DoH, you can choose a DNS provider. Popular options include Cloudflare (https://cloudflare-dns.com/dns-query), Google Public DNS (https://dns.google/dns-query), and others. Each provider offers different features and levels of privacy, so research to select the best one for your needs. Your chosen provider's URL needs to be specified in the Firefox settings or about:config as mentioned above.