This is typically due to a cached ssl state or misconfigured certificate. Whether you are the site owner or just trying to load a website, you can check a website's ssl certificate using qualys's ssl server test. Clear cache, check ssl, and update your browser for a quick fix.
This tutorial will show how to fix the err_ssl_protocol_error in the google chrome browser for both website owners and users. Err_ssl_protocol_error often indicates an expired, revoked, or improperly installed ssl certificate
