Fix ERR_SSL_PROTOCOL_ERROR in Chrome or Edge Checking the SSL configuring and making necessary changes in the browser settings can help us resolve the issue as detailed below: ...

If you receive This site can’t provide a secure connection, ERR_SSL_PROTOCOL_ERROR message when using Google Chrome on Windows 10, see this post.

Failed to load resource: net::ERR_SSL_PROTOCOL_ERROR Wikipedia-logo-v2@2x.png:1 Failed to load resource: net::ERR_SSL_PROTOCOL_ERROR ...

Check if ERR_BAD_SSL_CLIENT_AUTH_CERT error still occurs. After following the solutions mentioned, you will successfully fix Google Chrome ERR_BAD_SSL_CLIENT_AUTH_CERT error in Windows 10.