Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You're trying to install or update Visual Studio, but the installer fails with error code 0x80070...

You're browsing and suddenly get a 502 Bad Gateway error in Chrome. The page won't load, and you'...

When you try to create a new task in Task Scheduler and get a "404 Not Found" error, it usually m...

You open OneDrive and see 'Resolving changes' stuck for minutes or hours. Files won't sync, and t...

You try to open Windows Defender and get an error 404 – the page or resource can't be found. This...

You see 'permission denied' in OneDrive sync status on Windows or Mac. Files won't upload or down...