Multiple users cannot access the company file at the same time because QuickBooks Multi-User Mode not working is disabled. Errors in network setup, firewall restrictions, or improper hosting settings may be the cause of this problem. Prompt troubleshooting guarantees improved performance, less interference with daily accounting tasks, and more seamless collaboration. Efficient workflow depends on prompt resolution. Call us at +1.833.802.0002 if you want to speak with a QuickBooks support expert immediately.