Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

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Latest checklists

You updated Windows 11, and now you get a blue screen. If the error mentions hardware, it's o...

You set environment variables in a .env file next to your docker-compose.yml

Fix Nginx Upstream Connection Refused & Upstream Not Found
When you see upstream connection refused or upstream not found in your ...

Fix Git Push Rejected Non-Fast-Forward After Pull
You run git pull, then git push, and get: ! [rejected] non-fast-f...

How to Disable Windows Search Indexing Temporarily
If Windows Search is using too much CPU or disk I/O, or you're troubleshooting search issues,...

Fix VS Code Git Authentication Failed Keychain Error
If you see "Git authentication failed" in VS Code on macOS, the problem is often the macO...