Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

After a Windows update, you might see "Authentication failed" when trying to sign in to the Micro...

When you try to start a Remote Desktop session and see error 0x4, the connection settings might h...

If you're seeing a 404 Not Found error when trying to open Outlook on the web (formerly Outlook W...

When you see error code 0x80070002 in Chrome, it usually means the browser cannot read your profi...

If you see a 502 Bad Gateway error in Chrome on your Mac, it usually means that a server upstream...

If you see error code 0x8004de40 when trying to sync files in OneDrive, it usually means the sync...