Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

After a Windows update, you might see an error like “Search is not working” or “Invalid configura...

You try to turn on Windows Defender real-time protection, but you get error 0x80070422. This usua...

When you see a 502 Bad Gateway error in Outlook, it usually means a network comp...

If the Microsoft Store won't load, apps fail to update, or you see error codes like 0x80073CF0, a...

When a PowerShell script hits a rate limit error, you'll typically see messages like 429 To...

Fix Windows Defender Error 502 Bad Gateway
You open Windows Security and see 'Error 502 – Bad Gateway.' This usually means Windows Defender ...