Checklists for software errors, setup, and tool workflows.

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Fix Windows 11 Update Stuck at 0% with Service Not Running

You click Check for updates, see 0% for ages, and maybe an error like 'Windows Update service...

Fix 'nginx: configuration test failed unexpected end of file'

When running nginx -t or nginx -t -c /path/to/nginx.conf, you might see...

Fix Git 'index.lock' Error in VS Code

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

How to Fix Cloudflare 521 Error (Port 443 Blocked)

When you see a Cloudflare 521 error, it means Cloudflare’s servers cannot connect to your origin ...

How to Set npm Prefix to Avoid Permission Denied Errors

If you've seen EACCES: permission denied when running npm install -g

Windows 11 Taskbar Icons Missing? Fixes That Actually Work
You boot up Windows 11 and notice the taskbar icons are gone—no Start button, no search, no syste...