Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you're trying to use Microsoft Outlook with an IMAP account on Ubuntu, you'll need a third-par...

If you see 'token expired permission denied' in Task Scheduler logs, it usually means the task's ...

When you see ERROR 2003 (HY000): Can't connect to MySQL server on 'host' (111 Connection re...

Fix VS Code Extension Host Crashing on Startup
If Visual Studio Code opens but then immediately shows an error that the extension host has termi...

Fix SSH Host Key Verification Failed & Permission Denied
When you see Host key verification failed followed by Permission denied (publi...

Troubleshoot 502 Bad Gateway in Windows Terminal: Checklist
You're using Windows Terminal and suddenly see a 502 Bad Gateway error when tryi...