What Do SSL Certificate Errors Mean: Causes & How to Fix Them
Summary
So in this post, I will share a list of the most common SSL certificate errors that can cause the browser to block your website and tips on how to prevent or fix them. When the browser connects to your secure website, the web server returns a list of SSL certificates to prove its identity. Earlier this year, to ensure a secure web environment to the user, CA/B Forum, decided to limit the lifespan of all newly issued certificates to 398 days. Starting from September 1st, 2020, all the major browsers (Google Chrome, Mozilla Firefox, and Apple Safari) will reject certificates issued after this date with a validity period of more than 398 days. If there is no match, then the client will assume it is talking to the wrong server, will reject the certificate and block the connection.