Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you use command prompt scripts or tools across multiple Windows computers, you may have notice...

If you suspect malware despite Windows Defender being active, follow this checklist. It covers bu...

You click the Windows Security icon in the taskbar or try to open it from Settings, but nothing h...

You open Task Manager and see Windows Security (or Antimalware Service Executable) using nearly 1...

You try to log in after a Windows Update, but the system keeps bouncing you back to the login scr...

You're trying to run Windows Update, but your system slows to a crawl—memory usage spikes, and yo...