Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You see error 0x800f081f when running Windows Update, often with a message like 'The source f...

When you run git clone and see connection timed out after 30 seconds, i...

You open Windows Security and see a yellow warning: "Real-time protection is off. Your device...

You're in the middle of a Git operation—commit, merge, or rebase—and Git stops with: fa...

How to Fix Git Index Lock File Exists Error
If you see an error like fatal: Unable to create 'path/to/repo/.git/index.lock': Fi...

Docker Build Context Canceled: Fix .dockerignore Mistakes
You're running docker build and after a long wait you see: context cance...