Comprehensive guide to the most common DNS filtering issues: content not being blocked, misconfiguration, DNS hijacking, IPv6 conflicts, and more.
Read Guide
Step-by-step instructions to flush the DNS cache on Windows (all versions) and macOS. Essential after changing DNS settings.
Read Guide
Clear DNS Cache (Browser)
Flush the internal DNS cache in Chrome, Firefox, Edge, and Safari to ensure your browser uses the new DNS settings.
Ubiquiti DNS Override
Fix DNS override issues on Ubiquiti devices where the built-in content filtering overrides your CleanBrowsing DNS settings.
Debug DNS on ChromeBook
Debug and troubleshoot DNS filtering issues on Google ChromeBooks and ChromeOS devices.
Lock SafeSearch & Disable Blur
Force Google SafeSearch on and disable the Blur Off option across all browsers using registry and GPO settings.
Harden Microsoft Edge
Disable Secure DNS and harden browser security in Microsoft Edge to prevent DNS bypass.
Harden Google Chrome
Disable Secure DNS and harden browser policies in Google Chrome to maintain DNS filtering.
Chrome Secure DNS (DoH)
Configure DNS-over-HTTPS in Google Chrome to use CleanBrowsing's encrypted DNS servers.
Debug with Browser DevTools
Use browser Developer Tools to inspect blocked requests, capture HAR files, and diagnose DNS filtering issues.
Diagnose DNS Issues
Fix videos not playing, embedded content failing, and other DNS resolution issues caused by content filtering.
Command-Line DNS Tools
Complete reference for nslookup, dig, PowerShell, and host — query DNS records and verify CleanBrowsing from the terminal.
Apple iOS & macOS Conflicts
Fix Screen Time, Safari Private Browsing, and iCloud Private Relay conflicts with DNS filtering on Apple devices.
Install Root CA Certificate
Install the CleanBrowsing Root CA to avoid certificate errors on block pages served over HTTPS.
Remote Support (TeamViewer)
Connect with our support team via TeamViewer for hands-on troubleshooting of your configuration.
Still having issues?
Our support team can help troubleshoot your specific configuration.
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