QuickBooks Error H202 is a common issue that occurs when trying to access a company file located on another computer, and the connection to the server is disrupted. This error typically arises due to configuration issues with the hosting settings, firewall blocking communication, or DNS settings problems. Addressing QuickBooks Error Code H202 involves ensuring proper server settings, checking the host's configuration, and adjusting firewall permissions to allow for seamless communication between devices, ensuring smooth multi-user operations in QuickBooks.