Chrome network error · -107 · Connection

ERR_SSL_PROTOCOL_ERROR

The secure (HTTPS) connection could not be set up: Chrome and the server could not complete the TLS handshake, or the server sent something Chrome did not understand as TLS.

Chromium's description

An SSL protocol error occurred.

Chrome shows it as net::ERR_SSL_PROTOCOL_ERROR, error -107. puppeteer and Playwright report the same name when a page fails to load in Chromium.

Common causes

The server speaks plain HTTP on the HTTPS port (443), or HTTPS on a port where Chrome expects HTTP.
A broken or incomplete TLS configuration on the server or CDN.
An antivirus, firewall or proxy that intercepts HTTPS and breaks it.
A wrong system date and time.

How to fix ERR_SSL_PROTOCOL_ERROR

Check the system date and time.
Turn off HTTPS scanning of your antivirus and any proxy, then retry.
Clear the SSL state (Windows: Internet Options, Content, Clear SSL state) and the browser cache.
Site owners: test the site with an SSL checker, make sure port 443 serves TLS with a valid certificate chain and supports TLS 1.2 or 1.3.

ERR_SSL_PROTOCOL_ERROR in the screenshot API

When the page itself fails to load with ERR_SSL_PROTOCOL_ERROR, the API answers 502 with the message The target website could not be loaded (ERR_SSL_PROTOCOL_ERROR). (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_SSL_PROTOCOL_ERROR mean?

The secure (HTTPS) connection could not be set up: Chrome and the server could not complete the TLS handshake, or the server sent something Chrome did not understand as TLS.

How do I fix ERR_SSL_PROTOCOL_ERROR?

Check the system date and time.

Is a screenshot that fails with ERR_SSL_PROTOCOL_ERROR 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_CONNECTION_CLOSED 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

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