Fixes for common hosts file, DNS and localhost errors on every platform.
Fix DNS_PROBE_FINISHED_NXDOMAIN in Chrome and Edge: flush DNS, check the hosts file, reset DNS servers and clear the browser cache. Step-by-step solutions.
Locahl Team
Developer tools team
Fix "This site can’t be reached" / ERR_CONNECTION_REFUSED on localhost: check the server is running, the right port, IPv6 vs IPv4, the hosts file and firewall.
Locahl Team
Developer tools team
Fix NET::ERR_CERT_AUTHORITY_INVALID with mkcert on Mac by reinstalling the local CA, regenerating certificates and checking hostnames.
Locahl Team
Developer tools team
Your hosts file changes not taking effect? Learn how to fix DNS cache issues, browser cache, file permissions, syntax errors, and encoding problems on macOS.
Locahl Team
Fix permission denied errors when editing the Mac hosts file: sudo access, SIP, file ownership, chmod permissions and disk checks.
Locahl Team
Hosts file changes gone after restarting Mac? Learn the causes, SIP limits, daemon overwrites and backup strategies to keep changes.
Locahl Team
Network troubleshooting guide for Mac developers: ping, nslookup, dig, traceroute, network settings, firewall and DNS debugging.
Locahl Team
Localhost refuses to load on your Mac? Here are 7 tested solutions: server check, hosts file, firewall, blocked ports. Step-by-step troubleshooting guide.
Locahl Team
Fix DNS_PROBE_FINISHED_NXDOMAIN or ERR_NAME_NOT_RESOLVED on Mac with 8 tested DNS, hosts file, browser and network checks.
Locahl Team