Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

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

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 npm run build Failed on macOS: Common Causes and Solutions

Fix npm run build Failed on macOS: Common Causes and Solutions

If you're on macOS and npm run build fails, you're not alone. This command o...

Fix DNS Probe Finished NXDOMAIN Not Working on WiFi

Fix DNS Probe Finished NXDOMAIN Not Working on WiFi

If you see "DNS_PROBE_FINISHED_NXDOMAIN" in Chrome while connected to WiFi, your browser ...

Cloudflare DNS Not Propagating to All Nameservers: Common Fixes

Cloudflare DNS Not Propagating to All Nameservers: Common Fixes

You changed a DNS record in Cloudflare, but some resolvers still show the old value while others ...

Git Detached HEAD Warning Explained: Causes and Fixes

Git Detached HEAD Warning Explained: Causes and Fixes

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

Fix VS Code Source Control Not Detecting Changes with Permission Denied

Fix VS Code Source Control Not Detecting Changes with Permission Denied

You open VS Code, make edits, but the Source Control panel shows no changes. Or you see a "pe...