QuickBooks Desktop Enterprise relies on strong network connectivity for multi-user access, but issues like firewall restrictions, DNS conflicts, and hosting service failures can trigger connectivity errors. Users frequently see H202 or similar codes when trying to open the company file on remote systems. Troubleshooting requires configuring ports, checking services, and verifying permissions. If you are struggling with connectivity, calling +1-866-408-0444 can restore proper network settings quickly. Smooth access across all workstations ensures uninterrupted work with QuickBooks Enterprise, reducing downtime and maintaining reliable accounting performance.