Users wants to work in QuickBooks even though their company file is saved in online storage(e.g. Dropbox).
Intuit recommends only a Local Area Network (LAN) or Terminal Server (QuickBooks Enterprise ony) type of connection. Accessing your file over the Internet is not recommended due to a possible drop out connection while working in your QuickBooks file, and this might cause a data corruption. Keep in mind, there is no guarantee that your Internet will not experience a drop out connection from its server.