Users see "QuickBooks Error H101" when they want to switch to multi-user mode but the company file is housed on a different system that requires extra configuration. This error suggests communication problems or incorrectly configured hosting settings. In order to fix it, you must confirm that the QuickBooks Database Server Manager is operating, network connectivity, and hosting options are correct. If you would like to speak with a QuickBooks support specialist immediately, please contact us at +1.833.802.0002.