Every version of QuickBooks has a corresponding component that needs to be updated for QuickBooks to function in multi-user. Multi-user errors can be time-consuming to resolve. To help diagnose and fix these errors, download and run the QuickBooks File Doctor, which analyzes if your computer is properly set up for multi-user mode or not.
If your permissions aren’t set correctly, perform these steps:
Make sure that QuickBooks has the right level of access can help prevent future issues while working with your company files over the network.
Take ownership of the file
Grant Full Control
Before performing the following steps, ensure that File and Storage Services is installed.