Input Diagnostics
Visual Diagnostics
Audio Diagnostics
System & Network
Troubleshooting Hub
Find a fix, then verify it.
Troubleshoot common issues with our step-by-step Fix Guides. Whether it's a blurry webcam, silent microphone, or spotty Wi‑Fi, our guides help you solve the problem so you can pass your test.
Your Privacy Matters
All diagnostics run locally in your browser environment. Camera and microphone access is only requested when you start a test, and no audio or video data is ever uploaded or stored. For the best experience, we recommend using the latest version of Chrome, Firefox, or Edge.