Chrome network error · -100 · Connection

ERR_CONNECTION_CLOSED

The connection was closed by the other side in the normal way (a TCP FIN) before Chrome got a complete answer. The server, or something in front of it, hung up.

Chromium's description

A connection was closed (corresponding to a TCP FIN).

Chrome shows it as net::ERR_CONNECTION_CLOSED, error -100. puppeteer and Playwright report the same name when a page fails to load in Chromium.

Common causes

The server process closed the connection without answering, for example after an error.
A firewall, proxy or VPN closed the connection.
Network problems on the way.
A security service in front of the site refuses the client and closes the connection.

How to fix ERR_CONNECTION_CLOSED

Reload the page.
Turn off VPN and proxy, and try another network.
Reset the network settings (Windows: netsh winsock reset) and restart.
Site owners: check server and proxy logs for errors or idle timeouts at the time.

ERR_CONNECTION_CLOSED in the screenshot API

When the page itself fails to load with ERR_CONNECTION_CLOSED, the API answers 502 with the message The target website could not be loaded (ERR_CONNECTION_CLOSED). (target_unreachable). Not billed.

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_CONNECTION_CLOSED mean?

The connection was closed by the other side in the normal way (a TCP FIN) before Chrome got a complete answer. The server, or something in front of it, hung up.

How do I fix ERR_CONNECTION_CLOSED?

Reload the page.

Is a screenshot that fails with ERR_CONNECTION_CLOSED billed?

No. Requests the screenshot 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_QUIC_PROTOCOL_ERROR ERR_NAME_NOT_RESOLVED ERR_TOO_MANY_REDIRECTS ERR_NETWORK_CHANGED ERR_SSL_VERSION_OR_CIPHER_MISMATCH

All 249 Chrome network errors · Screenshot API errors

Screenshot API

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