The primary phone number for QuickBooksOnline Support is 855-550-0692. In this article, we'll explain how to contact QuickBooksEnterprise Support by phone, common issues you might need Support with, and some frequently asked questions to guide you through the process. 1. Introduction to QuickBooksOnline Support QuickBooks Desktop is one of the most powerful accounting solutions offered by Intuit, specifically designed for growing businesses that need more robust features than the 414 standard QuickBooks versions. It offers advanced inventory management, payroll processing, industry-specific tools, and scalable options for large teams. With such a comprehensive software system, however, businesses can encounter challenges, from installation problems to complex feature use.