Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You open Windows Security and see a message that real-time protection is turned off or has a conf...

You run docker-compose up and see an error like Error: Port 8080 is already al...

Docker Compose .env File Not Loading: Common Fixes
You set environment variables in a .env file next to your docker-compose.yml

How to Restore Missing Windows Taskbar Icons
You open Windows and notice some taskbar icons are gone—maybe the volume, network, or battery ico...

Fix ERR_CERT_AUTHORITY_INVALID in Chrome Incognito Mode
You open Chrome incognito and hit a warning: NET::ERR_CERT_AUTHORITY_INVALID. Th...

Fixing Nginx 502 Bad Gateway in Docker Networks
You have an Nginx container proxying requests to another container (like a PHP-FPM or Node app), ...