Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If Chrome frequently shows "ERR_CONNECTION_TIMED_OUT" or pages hang before loading, the browser's...

You open Outlook and get a configuration error when trying to connect to your Exchange account. T...

When Windows Search stops working—missing files, slow results, or no results at all—it's usually ...

When you try to open Outlook on the web (OWA) and see a 404 Not Found error, it usually means the...

You’re browsing in Chrome and a notification pops up: “Sign in again” or “Sync pause...

Microsoft Store Performance Issues Checklist
If the Microsoft Store is loading slowly, failing to download apps, or freezing, the problem is o...