To resolve ERR_SSL_PROTOCOL_ERROR, first check your device date and time, then clear browser cache and cookies. Disable VPN, proxy, or antivirus HTTPS scanning. Update your browser and ensure SSL/TLS settings are enabled. If the site is yours, reinstall the SSL certificate and verify correct server configuration.
I ran into this too, and it usually comes down to browser or network issues. First, try clearing your browser cache and cookies, then restart the browser. If that doesn’t work, check your system date and time they need to be correct for SSL to work. Disabling QUIC protocol or temporarily turning off antivirus/firewall can also help. For persistent cases, try using a different browser or resetting network settings.
