Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

OneDrive stops syncing, files show errors, or the app won't open. This checklist walks through co...

After a Windows update, you might see a 'token expired' or 'your credentials did not work' error ...

When running Disk Cleanup or the Windows Update troubleshooter, you might see error 0x80070002 an...

When trying to activate Windows, you may see error code 0x80072ee2. This usually means the activa...

If you've noticed Windows Security is off or grayed out, you may need to re-enable Windows Defend...

When you try to activate Windows and see a 502 Bad Gateway error, it usually means the activation...