This article will walk you through installing the DeskManager to QuickBooks Interface. This interface cannot be installed directly from DeskManager because it must be installed as an administrator. If the interface has not been installed or has been installed improperly you will see the message below:
To install the interface, right click the DeskManager shortcut and click Open File Location
Find qbfc4_0installer, right click and Run as Administrator. Windows will ask if you want to proceed with the install, choose Yes. Click Finish when the installer prompts for it.