Chrome network error · -200 · Certificate

ERR_CERT_COMMON_NAME_INVALID

The certificate the server presented was issued for a different host name than the one in the address bar, so Chrome cannot verify it belongs to this site.

Chromium's description

The server responded with a certificate whose common name did not match the host name. This could mean:
1. An attacker has redirected our traffic to their server and is presenting a certificate for which they know the private key.
2. The server is misconfigured and responding with the wrong cert.
3. The user is on a wireless network and is being redirected to the network's login page.
4. The OS has used a DNS search suffix and the server doesn't have a certificate for the abbreviated name in the address bar.

Chrome shows it as net::ERR_CERT_COMMON_NAME_INVALID, error -200. puppeteer and Playwright report the same name when a page fails to load in Chromium.

Common causes

The certificate covers example.com but not www.example.com, or the other way round.
A server or CDN that serves the default certificate of another site on the same IP.
An HTTPS-intercepting proxy or antivirus.
Opening a site by IP address instead of by its name.

How to fix ERR_CERT_COMMON_NAME_INVALID

Use the exact host name the site normally uses (with or without www).
Site owners: issue a certificate that lists every host name in its Subject Alternative Names, and check SNI on the server.
Turn off HTTPS scanning of the antivirus.

ERR_CERT_COMMON_NAME_INVALID in the screenshot API

Certificate errors do not stop a render: the API's browser accepts the certificate and captures the page the server sends, so a screenshot of a site with this error works. It does not tell you whether the certificate is valid; use an SSL checker for that.

Only the page's own load can fail a render. An image, script or frame of the page that fails with a network error does not: the page is captured as the browser shows it without that resource.

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Frequently asked questions

What does ERR_CERT_COMMON_NAME_INVALID mean?

The certificate the server presented was issued for a different host name than the one in the address bar, so Chrome cannot verify it belongs to this site.

How do I fix ERR_CERT_COMMON_NAME_INVALID?

Use the exact host name the site normally uses (with or without www).

Is a screenshot that fails with ERR_CERT_COMMON_NAME_INVALID billed?

The render is not stopped by this error: the API's browser accepts the certificate, and the screenshot counts like any other. Only requests the API answers with an error are not billed.

Other common errors

ERR_CONNECTION_RESET ERR_CONNECTION_REFUSED ERR_CONNECTION_TIMED_OUT ERR_CACHE_MISS ERR_ADDRESS_UNREACHABLE ERR_TIMED_OUT ERR_SSL_PROTOCOL_ERROR ERR_CONNECTION_CLOSED ERR_QUIC_PROTOCOL_ERROR ERR_NAME_NOT_RESOLVED ERR_TOO_MANY_REDIRECTS ERR_NETWORK_CHANGED

All 249 Chrome network errors · Screenshot API errors

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