Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

When you click the Windows Security icon in the Start menu or taskbar and nothing happens, it’s u...

When running Python in Git Bash on Windows, you may see bash: python: command not found

Fix Git SSL Certificate Problem: Unable to Get Local Issuer
You run git clone https://example.com/repo.git and get:
fatal: unable to acc...

Docker Container Exits Immediately: No Error, Common Fixes
You run docker run and the container starts, then exits within a second. No error me...

Taskbar Icons Missing But Taskbar Visible: Fixes
You see the taskbar at the bottom of your screen, but the icons—like the Start button, search bar...

Fix Bluetooth Device Not Detected on Windows 11
You try to pair a Bluetooth mouse, keyboard, or headphones, but Windows 11 doesn't see the de...