Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you see a notification that the Windows Security service has stopped working, your antivirus o...

You scheduled a Windows Defender Offline scan to clean a stubborn infection, but the scan either ...

You open Outlook and see an error about a version mismatch, or Outlook won't start because of a r...

If you see a 502 Bad Gateway or Permission Denied error when us...

If you've installed an offline version of the Microsoft Store (for example, on a PC without inter...

If your computer is running slowly or you're encountering odd errors, clearing the cache can ofte...