Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you see a 502 Bad Gateway or Permission Denied error when us...

You search for a file or email in Windows, and instead of results you get an 'Access Denied' mess...

If you see a 504 Gateway Timeout error when opening or downloading from the Micr...

If the Microsoft Store isn't loading, won't download apps, or throws errors like 0x80131500, a se...

You see error 0x800704ec when opening Windows Defender or Windows Security. The message says auth...

If Windows Update is stuck, failing, or taking too long, a corrupted cache is often the cause. Cl...