In order to export to a network drive, you first have to Map it.
To Map a Network drive go to File Explorer in Windows.
1. Open File Explorer from the taskbar or the Start menu, or press the Windows logo key + E.
2. Select This PC from the left pane. Then, on the Computer tab, select Map network drive.
3. In the Drive list, select a drive letter. (Any available letter will do.)
4. In the Folder box, type the path of the folder or computer, or select Browse to find the folder or computer. To connect every time you log on to your PC, select the Reconnect at sign-in check box.
5. Select Finish.