What does ERR_NAME_NOT_RESOLVED mean?

Chrome asked for the IP address of a host name and did not get one. It is the general error for a name that cannot be resolved. Chrome often runs a DNS probe next and shows a more exact code such as DNS_PROBE_FINISHED_NXDOMAIN.

What is the difference between ERR_NAME_NOT_RESOLVED and DNS_PROBE_FINISHED_NXDOMAIN?

They are two views of the same kind of failure. ERR_NAME_NOT_RESOLVED is the network error. DNS_PROBE_FINISHED_NXDOMAIN is the result of Chrome’s follow-up DNS probe, which found that the name does not exist.

Why does ERR_NAME_NOT_RESOLVED appear in the console but the page loads?

A resource on the page, such as an image, a script or an API call, points to a host name that does not resolve. The main page loads, but that one request fails. Fix the host name in the code or the configuration.

Can a VPN cause ERR_NAME_NOT_RESOLVED?

Yes. A VPN often sends your DNS questions to its own server. If that server is slow, blocks the name or has a broken setting, the lookup fails. Turn the VPN off to test.

ERR_NAME_NOT_RESOLVED

ERR_NAME_NOT_RESOLVED: what it means and how to fix it

ERR_NAME_NOT_RESOLVED is the error code Chrome gives when it cannot turn a host name into an IP address. It can appear for the page itself, or in the developer console for an image, a script or an API call on another host.

You may also see

DNS_PROBE_FINISHED_NXDOMAIN (Chrome, after its DNS probe)
DNS_PROBE_FINISHED_NO_INTERNET (Chrome, when there is no connection)
net::ERR_NAME_NOT_RESOLVED (developer console)

Common causes

1
The host name is wrong: a typo in the address, or a wrong API host in an environment variable or a config file.
2
The name has no DNS record, or the domain has expired.
3
The device has no working internet connection, or its DNS server does not answer.
4
A custom name for local development is missing from the hosts file, or a container cannot reach the DNS server of the host.
5
A blocker, VPN or security program stops the lookup.

If you are visiting the site: how to fix it

1
Check that you are online, and that other sites load.
2
Check the address for a typo, then try it on another network.
3
Clear the DNS cache of the system and of Chrome (chrome://net-internals/#dns), then reload.
4
Switch to a public DNS server such as 1.1.1.1 or 8.8.8.8, and turn off a VPN to test.

If you run the site: what to check

1
Open the developer console. The failing request shows the exact host name that did not resolve. Compare it with the one you expect.
2
For a site you run, look up the name and check that it has a record and that the domain is not expired.
3
For local development, add the name to the hosts file, or use a local DNS tool. In a container, check the DNS server the container uses.
4
If the name is right and it still fails only for some users, compare the answers of several resolvers.

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Frequently asked questions

What does ERR_NAME_NOT_RESOLVED mean?: Chrome asked for the IP address of a host name and did not get one. It is the general error for a name that cannot be resolved. Chrome often runs a DNS probe next and shows a more exact code such as DNS_PROBE_FINISHED_NXDOMAIN.
What is the difference between ERR_NAME_NOT_RESOLVED and DNS_PROBE_FINISHED_NXDOMAIN?: They are two views of the same kind of failure. ERR_NAME_NOT_RESOLVED is the network error. DNS_PROBE_FINISHED_NXDOMAIN is the result of Chrome’s follow-up DNS probe, which found that the name does not exist.
Why does ERR_NAME_NOT_RESOLVED appear in the console but the page loads?: A resource on the page, such as an image, a script or an API call, points to a host name that does not resolve. The main page loads, but that one request fails. Fix the host name in the code or the configuration.
Can a VPN cause ERR_NAME_NOT_RESOLVED?: Yes. A VPN often sends your DNS questions to its own server. If that server is slow, blocks the name or has a broken setting, the lookup fails. Turn the VPN off to test.

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