Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You downloaded the offline installer for Microsoft Office or Outlook, but during setup you see a ...

If you need to find your Windows version, edition, or build number from the command line, PowerSh...

If you see an "Access Denied" error when using Windows Search, it usually means the search indexe...

When Command Prompt stops working as expected—won't open, returns odd errors, or commands don't r...

If you see DNS-related errors in Task Scheduler—like 0x80072EE2 or 0x80072EFD<...

Fix Windows Defender Proxy Error Not Working
You launch Windows Defender Security Center or try to run a scan, and you see a proxy error—somet...