When you use Hosted QuickBooks Desktop through RemoteApp, your local computer and the QuickBooks session run in two separate environments. Because of this, you cannot drag and drop a file from your desktop directly into QuickBooks. This article shows the correct way to attach a document using your FileBridge drive.
Why drag & drop does not work: QuickBooks runs on our servers, not on your local machine. The two environments do not share a file drag surface, so files dragged from your desktop into the RemoteApp window are ignored. FileBridge solves this by making the same folder available on both sides.
On your local computer, copy or move the file from your Desktop into your FileBridge drive.
In your Hosted QuickBooks session, open the record you want to attach the file to (an Invoice, Sales Order, and so on).
Important: The file must be Browsed to, not dragged and dropped. Even inside the QuickBooks window, use the Browse button and point to the file on your FileBridge drive.
Quick recap
Desktop file → FileBridge drive (local) → open transaction in Hosted QuickBooks → Browse to the file on the FileBridge drive (server) → attach.