Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

After restarting your computer to complete a Visual Studio installation or update, you might see ...

If you're seeing a 404 error in Microsoft Teams—often when opening a chat, channel, or file—it's ...

If Outlook stops syncing with your Exchange Server, you’ll likely see errors like “Disconnected” ...

If you see 'Invalid configuration' or 'Permission denied' when starting Chrome, the browser is us...

Windows Update can fail for many reasons. This checklist walks you through the most common fixes,...

You're trying to install Windows Security (formerly Windows Defender) using an offline installer,...