The message "QuickBooks Hosting Mode is Off" indicates that there is no active multi-user hosting feature, which prohibits several users from accessing the system at once. This problem could be caused by incorrect setup of the settings or technological issues, in which case users would need to activate hosting mode in order to use QuickBooks collaboratively. If you require quick help and guidance, don't hesitate to contact the QuickBooks Support Team directly at 1.855.738.2784.