Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You open Chrome, click the puzzle icon, and your extensions are grayed out or missing. This is co...

You run git merge and get an error: fatal: refusing to merge unrelated histories...

Fix 'node sass build failed' During npm install
When running npm install, you might see an error like "node sass build f...

Fix VS Code Git Authentication Failed Keychain Error
If you see "Git authentication failed" in VS Code on macOS, the problem is often the macO...

Fix Firefox Secure Connection Failed on Windows 10
You're browsing in Firefox on Windows 10 and get a full-page error: Secure Connection Fai...

Fix Windows Security App Blocked by Antivirus
You open Windows Security (formerly Windows Defender) only to see an error or blank screen becaus...