Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If OneDrive stops syncing and you see errors like "Syncing paused" or "Changes being processed," ...

If you see a '404 Not Found' error when opening Windows Security (formerly Windows Defender), the...

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

After a recent Office or Windows update, you might see an error like 'Outlook module not found' o...

You're trying to sign in to your Google account in Chrome, but the browser keeps showing an error...

If you run a scheduled task and see a 504 Gateway Timeout error, the task is lik...