Microsoft released a tool called (sometimes referred to as the Windows Update Troubleshooter ). For Windows 7, you can download the Microsoft Safety Scanner or use the "WindowsUpdateDiagnostic.diagcab" (if still available from Microsoft’s official site). However, Microsoft has since deprecated many Windows 7 support tools.
A dedicated reset tool understands these nuances and applies the correct fixes without breaking your OS. reset windows update tool windows 7 32 bit