Checklists for software errors, setup, and tool workflows.

Git Detached HEAD Warning Explained: Causes and Fixes

You see a warning: "You are in 'detached HEAD' state." This happens when you chec...

Fix npm run build Failed Due to Missing Dependencies

When you run npm run build and it fails with errors about missing dependencies, the ...

Windows Security App Not Opening? Try These Steps

If the Windows Security app won't open, shows a blank screen, or crashes immediately, you'...

Windows Search Indexing Setup: A Practical Guide

If Windows Search is slow or returning no results, the indexing service may not be set up correct...

Fix Git 'index.lock' Error in VS Code

If you see the error 'fatal: Unable to create 'path/.git/index.lock': File exists'...

Fix 'package.json Not Found' After Cloning a Repository

Symptom

You clone a repository from GitHub (or another remote), change into the directory...