QuickBooks Is Not Responding offers the feature of multi-user for better performance and results. This feature is available in QuickBooks Pro and premium. But not many users know how to enable this feature. To know how to enable this feature, pay attention to the instructions below:  Open QuickBooks.  Open the file menu.  Choose the ‘multi-user mode’. If you would like to gain the help of experts then you can contact QuickBooks Technical Support Number where your problems will be administered and resolved by a skilled technician. URL:- How do more than two people use QuickBooks at the same time