RE: Reason behind QuickBooks Error H101, H202, H303, or H505?
Either Incorrect hosting configuration settings or in or out communication command blocked by Firewall. Wrong Network Data file or it may be network data file got damage. If QuickBooks cannot get the internet protocol address of the company file hosted system then this error will occur. If the configuration was done in a manner in which only files through host are allowed. The server of QuickBooks, QuickBooks Database XX or QuickBooks Company file monitor were not active indicating its need to be started instantly.