Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you see "connection refused" or "permission denied" when trying to start or update Windows Def...

If Chrome won't load pages or gives proxy errors, the problem is often in the system proxy settin...

You’ve set COMPOSER_MEMORY_LIMIT=1024M or added memory_limit=1024M to <...

If an app can't connect to the internet or network, Windows Defender Firewall may be blocking it....

If Visual Studio Code opens but then immediately shows an error that the extension host has termi...

After a system update, you might find that a custom or third-party service fails to start. This i...