Understanding the Error
Chrome's specific error for NXDOMAIN (domain not found).
Quick Browser Fixes
# Clear Chrome DNS cache
chrome://net-internals/#dns
# Clear Chrome host cache
chrome://net-internals/#sockets
# Restart Chrome completelySystem-Level Fixes (Windows)
# Run as Administrator
ipconfig /release
ipconfig /renew
ipconfig /flushdns
netsh winsock reset
netsh int ip reset
Restart computerSystem-Level Fixes (macOS/Linux)
# macOS
sudo dscacheutil -flushcache
sudo killall -HUP mDNSResponder
# Linux
sudo systemctl restart NetworkManager
sudo systemd-resolve --flush-cachesCheck Third-Party Security Software
Antivirus, VPN, or firewall can block DNS:
- Temporarily disable VPN
- Disable HTTPS scanning in antivirus
- Check proxy settings
Change DNS Server
Change from ISP DNS to:
- Google: 8.8.8.8, 8.8.4.4
- Cloudflare: 1.1.1.1, 1.0.0.1
- Quad9: 9.9.9.9
On Windows: Network Settings → Change adapter options → IPv4 properties.
Check Hosts File for Old Entry
Windows: C:WindowsSystem32driversetchosts
macOS/Linux: /etc/hosts
Remove any stale entries for your domain.