Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

When Windows Update returns a 404 Not Found error, it usually means the update server can't locat...

You're trying to download an app or update from the Microsoft Store, but you get an error about r...

You've lost your Chrome profile, upgraded to a new computer, or need to reset Chrome without losi...

You've backed up your Chrome profile, but when you try to restore it—often after a reinstall or m...

If you get a proxy error in Command Prompt—for example, when running curl, git...

Windows Security Configuration Checklist
If you're setting up a new Windows machine or reviewing an existing one, a security checklist hel...