I wish to transfer files between a Windows 10 desktop and a media server running Ubuntu 14.04.1. I have Samba installed on Ubuntu and I can transfer files only wirelessly. The Windows 10 desktop has a wireless USB dongle, which connects to my 4G mobile-broadband device (EE Osprey). The media server has a PCI express wireless adapter, which also connects to the 4G mobile-broadband device. File transfer is only possible in this configuration.
However, when I remove the wireless USB dongle from the Windows 10 desktop and connect to Ubuntu directly using an ethernet cable, Windows 10 fails to detect my Ubuntu shared folder. I even tried to connect the Windows 10 desktop to the Ubuntu media server via a desktop switch (i.e. using Windows 10 desktop to desktop switch using an eternet cable, Ubuntu media server to same desktop switch using another ethernet cable) and this doesn't work. Windows 10 can't seem to detect the Ubuntu media server in this configuration.
Please note that during all this time, I have removed the wireless USB dongle from the Windows 10 desktop but the Ubuntu media server has the PCI express wireless adapter on at all times.
Could anybody help me with this situation please? How can I connect the two computers using only ethernet / LAN and not wireless?