Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You try to activate Windows 10, but the progress bar stays at 0% for minutes or hours. This can h...

Outlook error 0x80040610 usually appears when you try to send or receive email. The message says ...

If you've enabled Files On-Demand but still see all files downloaded or missing cloud icons, a fe...

When you see “Windows Defender failed to start” or “Windows Defender service terminated unexpecte...

If you notice that Windows Security (formerly Windows Defender) is using a lot of memory—sometime...

You sign in to Windows, the desktop appears for a moment, and then you're back at the sign-in scr...