QuickBooks Network Mapping Errors in Multi-User Mode If you use QuickBooks Desktop in Multi-User Mode, you rely entirely on your network’s stability. When the network stumbles, productivity grinds to a halt. Among the most frustrating roadblocks for accountants and office managers are QuickBooks Network Mapping Errors. You might open QuickBooks, attempt to switch to Multi-User Mode, and find that the software simply cannot see the company file. Perhaps the drives show a red "