Connection check planner
Choose the symptom and scope to build a careful first-check plan. This planner cannot inspect your device or network; it turns your selections into a checklist you can complete and download.
Observe before changing
Compare a second device, a small test document or a separate application. The useful test depends on the symptom. A successful comparison can be as informative as a failure.
One small step at a time
Mark the checks you complete and note their results separately. This tool does not run commands, inspect devices, change settings or diagnose a definite cause.
Keep a useful support record
Download the selected plan and check marks as a text file. Nothing you select here is sent to a diagnostic service. For a managed network, use its administrator for restricted changes.
From the tool to the explanation
Inputs are processed in your browser. Read the related guides to understand the assumptions, worked examples and limits of a result.
Explore the complete guides ↗