How to Fix Errors After Renewing Let’s Encrypt Certificate

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.

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