Today I renewed my Let’s Encrypt certificates using certbot on my nginx webserver. However, I received SSL errors, and the error messages was:
In Chrome: ERR_SSL_PROTOCOL_ERROR
In Firefox: SSL_ERROR_RX_UNEXPECTED_NEW_SESSION_TICKET
Recent updates seem to have made conflicts in the nginx configuration. And the solution is to simply delete or rename the file “default.conf” in the directory /etc/nginx/conf.d. And then restart nginx.
For example, in CentOS you can write the following to delete the file and restart nginx:rm /etc/nginx/conf.d/default.conf
service nginx restart
The issue should now be solved. Hope this help you get back online.
