Error code
Chrome ERR_SSL_PROTOCOL_ERROR
CHROMEERR_SSL_PROTOCOL_ERROR
Browser Error Code· An error code shown in a web browser when a page fails to load.
What it means
The SSL or TLS handshake failed and a secure channel could not be established.
How to fix it
- Check that your system clock is set correctly.
- Disable QUIC at chrome://flags/#enable-quic.
- Clear SSL state in Windows Internet Options.
- Update Chrome to the latest version.
Not affiliated with Chrome. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
More Chrome codes
- ERR_ABORTEDThe request was cancelled before it completed
- ERR_ADDRESS_UNREACHABLEChrome cannot route a packet to the destination IP address
- ERR_BLOCKED_BY_ADMINISTRATORA network policy or device management policy blocked this URL
- ERR_BLOCKED_BY_CLIENTA browser extension blocked this request
- ERR_CACHE_MISSThe resource was expected from the browser cache but was not found there
- ERR_CERT_AUTHORITY_INVALIDThe certificate was signed by an authority Chrome does not trust
- ERR_CERT_COMMON_NAME_INVALIDThe certificate hostname does not match the site you requested
- ERR_CERT_DATE_INVALIDThe server's SSL certificate has expired or is not yet valid
- ERR_CERT_REVOKEDThe certificate has been revoked by its issuing authority
- ERR_CONNECTION_CLOSEDThe server closed the connection unexpectedly before sending a complete response
- ERR_CONNECTION_REFUSEDThe server actively refused the connection request
- ERR_CONNECTION_RESETThe connection was cut mid-session by the remote host