The server and workstations can be connected in multi-user mode. Quickbooks Error Code h202 occurs when the connection is lost. This is also why this problem is referred to as a multi-user switching error. This issue occurs when you try to open a QuickBooks file in a multi-user environment. The server establishes connections with other computers on the same network. The file on the server is accessed by workstations over the network. However, errors occur for a variety of reasons and occasions.