Mounted folders in QlikView are not exactly what mounting a volume in UNIX is (attaching filesystems from different devices). First, QlikView only supports Windows NTFS (not NAS - CIFS for the time being).
Second, a mounted folder makes sense as long as AccessPoint always shows all QVW files within a folder and all its subfolders. So if you set "C:\" as your root folder, the AccessPoint will look for all QVW files in your entire hard disk. So for example, if you want to differentiate what your Marketing users see from what your Finance users see, you create two different mounted folders Marketing and Finance, and distribute to each folder their corresponding files applying their corresponding permissions.
And finally, always use UNC as the default way to access a shared folder in the network. Mapped drives may work, but some users may have restrictions or simply not the folder mapped, whereas the UNC path will work for all users, as long as they have permissions.
Hope that helps.
You can also create a symbolic linked directory using the " mklink /D " command.
This create a directory on you local drive that is a shortcut to the shared folder.
That way QMC will see you share.
Note : some thread said that SMB share are not supported by QlikView, some say it is. A QlikView tech brief from 2012 said that only Windows File Share should be used.