If you keep getting QuickBooks Error 1402 while trying to set up QuickBooks Desktop and its updates, this is an indication of issues with the Windows registry. Although users of other operating systems may also experience the QuickBooks installation error 1402, it most frequently affects Windows Vista users. When you run across the error, QuickBooks will abruptly stop installing and display the message "Error 1402: Could not open key" on your screen. For step-by-step troubleshooting advice, read the article through to the conclusion.