Troubleshooting Website Security Certificates on Windows

When a secure website suddenly blocks your access after a system update, the culprit is often an outdated or misconfigured security certificate. This text-based course guides you through the foundational concepts of web security, explaining how SSL/TLS certificates establish trust between your browser and secure servers. You will learn to recognize the root causes of certificate warnings and connection failures on Windows operating systems, especially when legacy systems fail to update their trusted root stores. What you will learn: Understand the core mechanics of SSL/TLS handshakes and public key infrastructure; Identify the difference between browser-specific errors and system-wide certificate failures; Update and manage the Windows Root Certificate Store manually; Configure modern security protocols like TLS 1.2 and TLS 1.3 on older operating systems; Clear SSL states and resolve browser conflicts safely. The course begins with essential security definitions and clear terminology before walking you through practical, step-by-step diagnostic workflows to restore secure access to financial and secure portals. This course is designed for beginner computer users and IT hobbyists looking to solve persistent connectivity issues without any prior networking experience. Gain the knowledge to keep your system-level security certificates current and access secure websites reliably.