Reason behind QuickBooks Error H101, H202, H303, or H505?
The cause of QuickBooks Error H101, H202 ,H303, H505, when you decided to switch multi-user mode from a single mode you get an error. The reason behind of the error(H202) is, when you are trying to work with a company file that is located on another computer, and this copy of QuickBooks cannot reach the server on that computer. In this error the message is either not received or passed on to the server of the other system.
Reason of these(H101,H303, H505) errors are, when you are trying to work with a company file that is located on another computer, and that computer needs additional installation and setup. These errors specifies that the computer on which the QuickBooks company file is placed needs changes in its configuration settings.
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.