A. QuickBooks error code H202 is a connection error that happens while switching to the multi-user mode from the single-user mode. You can settle it down with the following:
Download and Open the QuickBooks Tools Hub program.
Click on the Network Issues tab.
Next, click on the QuickBooks Database Server Manager.
Now, click Start Scan if the QuickBooks company file folder(s) are available.
QuickBooks Database Server Manager will repair the error code H202 automatically.
Click on Close.