Chrome network error · -203 · Certificate

ERR_CERT_CONTAINS_ERRORS

The server responded with a certificate that contains errors. This error is not recoverable.

Chromium's description

The server responded with a certificate that contains errors. This error is not recoverable.
MSDN describes this error as follows: "The SSL certificate contains errors." NOTE: It's unclear how this differs from ERR_CERT_INVALID. For consistency, use that code instead of this one from now on.

Chrome shows it as net::ERR_CERT_CONTAINS_ERRORS, error -203. puppeteer and Playwright report the same name when a page fails to load in Chromium.

ERR_CERT_CONTAINS_ERRORS 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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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

Screenshot API

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