QuickBooks Error H202 arises in your PC when a workstation fails to communicate with the company file. In such a scenario it doesn’t permit its users to access the company files. There are multiple causes and signs behind this error. So, before following the troubleshooting steps, you need to know its signs and causes. Signs of QuickBooks Error H202 These are the signs of QuickBooks Error H202: 1. You will see QuickBooks Error Code h202 on your system when the software’s user fails to switch to multi-user mode . 2. QuickBooks software freezes. 3. Your PC becomes inactive. 4. You will not be able to open the company file that is located on another PC. Causes of QuickBooks Error H202 Check out the possible causes of QuickBooks Error H202 : 1. Maybe, the hosting settings are not configured. 2. Probably, the user is not able to exchange the data between the server and the software because of the blockage by the firewall