--- title: "Browser and DNS Errors: Meaning and Fixes" description: "Guides to common browser and DNS errors such as DNS_PROBE_FINISHED_NXDOMAIN and ERR_CONNECTION_REFUSED. Causes and fixes for visitors and site owners." url: https://uptrack.app/errors ---

# Browser and DNS errors

What a browser or DNS error means, what you can try as a visitor, and what to check if you run the site. For the numbers a server sends, see the [HTTP status codes](https://uptrack.app/http). - [DNS\_PROBE\_FINISHED\_NXDOMAINDNS\_PROBE\_FINISHED\_NXDOMAIN means Chrome asked a DNS server for the IP address of the site and the server answered NXDOMAIN: no such domain.](https://uptrack.app/errors/dns-probe-finished-nxdomain) - [ERR\_NAME\_NOT\_RESOLVEDERR\_NAME\_NOT\_RESOLVED is the error code Chrome gives when it cannot turn a host name into an IP address.](https://uptrack.app/errors/err-name-not-resolved) - [DNS server not respondingThe Windows network troubleshooter says “Your computer appears to be correctly configured, but the device or resource (DNS server) is not responding” when your computer sent a DNS question and got no answer.](https://uptrack.app/errors/dns-server-not-responding) - [ERR\_CONNECTION\_REFUSEDERR\_CONNECTION\_REFUSED means your browser reached the server’s address, and the server answered that it will not accept the connection on that port.](https://uptrack.app/errors/err-connection-refused) - [ERR\_CONNECTION\_RESETERR\_CONNECTION\_RESET means the connection to the site was set up, and then something on the path broke it with a reset while the page loaded.](https://uptrack.app/errors/err-connection-reset) - [ERR\_CONNECTION\_CLOSEDERR\_CONNECTION\_CLOSED means the server closed the connection before it sent a page.](https://uptrack.app/errors/err-connection-closed) - [ERR\_SSL\_PROTOCOL\_ERRORERR\_SSL\_PROTOCOL\_ERROR means the browser started a secure (TLS) connection and the server’s answer was not valid.](https://uptrack.app/errors/err-ssl-protocol-error) - [NET::ERR\_CERT\_AUTHORITY\_INVALID“Your connection is not private” is the warning Chrome shows when it cannot trust the certificate of a site.](https://uptrack.app/errors/your-connection-is-not-private)