Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you see '403 Forbidden' or 'Permission denied' when nginx tries to serve static files (CSS, JS...

You're trying to send or receive email in Outlook, but you get an error about the SSL certificate...

If you see error 407 (Proxy Authentication Required) when using Command Prompt for network operat...

You open Windows Terminal and see an error about a version mismatch between the terminal app and ...

When you run Get-MpComputerStatus or Start-MpScan and see "The ...

Fix Windows Defender Service Not Running
If you see "Windows Defender service not running" or a red warning in Security Center, the underl...