Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You see "OneDrive authentication failed" when signing into Office 365. This usually means OneDriv...

You may need to manually install an SSL certificate in Chrome when testing a local development si...

When you run npm install in a React project and see warnings or errors about unmet p...

If Chrome shows a DNS error like "DNS_PROBE_FINISHED_NXDOMAIN" or "ERR_NAME_NOT_RESOLVED" on ever...

If you see a 504 Gateway Timeout error in Outlook (often when connecting to Exchange Online or a ...

Windows Terminal stores its settings in a JSON file. If that file gets corrupted—often after a cr...