When the installer is unable to access particular registry keys during installation or updating, QuickBooks Error 1402 appears. This problem typically results from defective installation files, inadequate permissions, or broken Windows components. QuickBooks may not open or operate correctly as a result, necessitating troubleshooting actions like fixing the installation or changing system settings. For help, give 1.855.738.2784 a call to speak with a QuickBooks specialist.