Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you use multiple Chrome profiles—say, one for work and one for personal—sync can sometimes sto...

You run npm install or npm start and get something like:

...

How to Fix Git Detached HEAD Error
You run git status and see "HEAD detached at" followed by a commit hash. Thi...

Windows Explorer Not Responding? Here's How to Fix It
Windows Explorer (now called File Explorer) freezing or showing "not responding" is a com...

Fix Docker Desktop Engine Not Running on Windows
You open Docker Desktop on Windows, see the whale icon stuck in the system tray, and the engine s...

Fix 'git pull failed index.lock file exists' Error
When running git pull, you may see an error like:
fatal: Unable to create &#...