Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you see a message like “Your profile could not be opened correctly” or “Update failed” when st...

You open OneDrive and see a blank white or gray screen. The app doesn't load your files, and noth...

Windows Defender error 0x80070422 usually appears when you try to open Windows Security or run a ...

You type a query into the Start menu or File Explorer search box, but instead of results, you get...

If you see an error message saying 'Windows Update module not found' or 'wuapi.dll is missing', W...

If you see a 504 Gateway Timeout error when opening Windows Security after a recent update, it us...