It is very important to understand the reason why this problem is caused. And if that is done; try to determine the signs for QuickBooks Hosting Mode is Off. Here are some of the common ones amongst them. Users are unable to access the company file in multi-user mode. The "Hosting mode is off" error message appears when attempting to open the company file. You are unable to switch to multi-user mode from single-user mode. Your QuickBooks File Doctor tool fails to resolve the issue. The company file opens in single-user mode instead of multi-user mode. QuickBooks Database Server Manager shows the status as "Stopped" or "Not Running." The network connection icon in the system tray shows limited or no connectivity. For any further assistance you can call on +1.855.738.0359 and get immediate support for this issue. If you are unable to make any further progress our team will help you in that too.