When users attempt to access a corporate file on a different computer but are unsuccessful because of improper hosting configuration, QuickBooks Error H505 occurs. Usually, this error suggests inadequate multi-user mode settings or network problems. It can be fixed by configuring the QuickBooks Database Server Manager, modifying hosting settings, and confirming network connectivity. Please call us at +1.833.802.0002 if you want to talk to a QuickBooks support specialist right now.