Getting StartedLevel 1 — BasicInformational severity
How to Read Your Diagnostic Report
Start here: what health scores, severity levels, and PASS/WARNING/FAIL mean, and which guide to read next.
Overview
Before diving into any specific check, it helps to understand how these reports are scored and what the labels mean - both on this website's Live Diagnostics tool and in the guides below.
Related Guides
DNS Resolution: Why Won't This Domain Resolve?Ports & Firewall: Is Something Blocking the Connection?HTTP Reachability: Why Won't This Website Load?TLS & Certificates: Is the HTTPS Certificate Valid?Security Headers: What Is This Site Actually Protecting Against?Cookie Security: Are Cookies Configured Safely?Cache & CDN: Am I Seeing an Old Cached Version?Performance: Which Phase Is Actually Slow?Local Machine Fixes: Clearing DNS Cache, Firewall, and Network ServicesPing & Packet Loss: Is the Network Path Dropping Traffic?Certificate & PFX Management: Validating and Bundling a CertificateVLAN & Switch Troubleshooting: Tracing a Connectivity Issue Over SSH