QuickBooks Error H202 arises when attempting to access a company file located on another computer, and the server fails to establish a connection. This error suggests issues within the multi-user hosting setup. Typically, network configuration errors, incorrect hosting settings, or firewall blockages are to blame. Resolving H202 involves checking the network connectivity, running the QuickBooks File Doctor tool, and ensuring the server's correct setup to facilitate seamless file access and functionality across the network.