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If local DNS resolution is failing the likely cause is that either EDNS isn't supported or a firewall is blocking EDNS queries.

Follow these steps to resolve this issue.

1. In your device Terminal, open DNSFilter Agent daemon.conf
   a. see issue diagnostics for steps to navigate to the daemon.conf file
2. Add the following option to the top of the configuration file:
   
   

   IncludeLocalResolversEdnsRecords=false

   Before

   

   After

   

    

3. Restart the daemon.conf
   

   • launchctl unload /Library/LaunchDaemons/com.dnsfilter.agent.macos.helper.plist launchctl load /Library/LaunchDaemons/com.dnsfilter.agent.macos.helper.plist

   • launchctl unload /Library/LaunchDaemons/io.netalerts.agent.macos.helper.plist launchctl load /Library/LaunchDaemons/io.netalerts.agent.macos.helper.plist

4. Restart the machine to apply the change