When using multi-user mode, QuickBooks Error H202 happens when the program is unable to establish a connection with the server that houses the company file. Usually, improper hosting settings, problems with network configuration, or restricted server connectivity are the causes. It can be fixed by utilizing the QuickBooks Database Server Manager, confirming network connectivity, and examining hosting settings. Call the QB Support staff at 1.855.738.2784 if you run into any issues.