I've been trying to fix my buddy's laptop that gets SLL errors on all browser and all websites. did everything thats posted everywhere and had no luck. Chat GPT eventually gave me the fix. Also go to Startup tab in Task Manager and disable suspicious entries. To fix certificate mismatches: Here is a table that summarizes the most common SSL protocol errors and their causes: Configure security tools to allow SSL/TLS traffic or temporarily disable for testing. Before troubleshooting SSL errors, you’ll need to install essential diagnostic tools. Encountering ERR_SSL_PROTOCOL_ERROR can be frustrating because it disrupts the browsing experience and raises concerns about data security and privacy. This article will explain what ERR_SSL_PROTOCOL_ERROR is, why it happens, and how it looks across different browsers. Fix the ERR_SSL_PROTOCOL_ERROR by following this guide. The guide offers troubleshooting steps for both website visitors and website owners.