Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

After a Windows update, you might find that your VMware virtual machines have no network connecti...

You might see an error saying 'Windows Update auto start failed to start' when you try to check f...

You open Outlook and get an error: 0x80040154 — "Class not registered" or "module no...

When Microsoft Teams shows a proxy error, it usually means the app can't reach its servers becaus...

If you have a scheduled task that calls a URL or web service and you see a 504 Gateway Ti...

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