For e-commerce websites, where payments and sensitive data are being exchanged, it is nearly mandatory to have a valid SSL certificate.

Having an SSL certificate allows for an HTTPS (where “S” stands for “ secure”) connection on a website, which browsers display as a green padlock.

This protocol enables a secure internet communication channel between a web browser and a server, server to server, or application to server. The SSL certificates provide encryption, server authentication, as well as data integrity. SSL stands for Secure Socket Layer, which serves to secure online transactions and sensitive information. Read along to find out how to fix the ERR_SSL_PROTOCOL_ERROR on your website. If you are struggling with the error, this article will walk you through all the solutions step-by-step. It can be caused by SSL misconfigurations on your local computer, issues on the server side, or even both. Often, it appears with a “ This site can’t provide a secure connection” message. The ERR_SSL_PROTOCOL_ERROR is a common SSL issue and may prevent you from accessing your own or other websites.

How to fix “This site can’t provide a secure connection” err_ssl_protocol_error?.

Why ERR_SSL_PROTOCOL_ERROR Error Occurs?.

Insecure browser message