Nothing kills a morning faster than logging into cPanel to find an AutoSSL error staring at you from the dashboard. The little red badge next to SSL/TLS means that one of your domains just failed to get a free Let’s Encrypt certificate — and if you don’t fix it quickly, your visitors will see the dreaded “Not Secure” warning in their browser.
AutoSSL in cPanel is supposed to be a set-it-and-forget-it feature. And most of the time, it is. But when it breaks — whether from DNS misconfigurations, server rate limits, or certificate validation failures — it can be frustrating to diagnose, especially if you’re not sure where to start. This guide walks you through the most common AutoSSL errors, how to read the logs, and the exact steps to resolve each one.