I have been using Libreelec for several months without this problem. I recently lost my 905 box (long story), so I've started afresh.
Everything is fine except that when I try to add a source by browsing my windows network it never finds anything. Manually adding the pc ip address fails too with "Invalid argument" or "operation not allowed".
I know the network is fine, and I can access the 905 from any windows PC.
I must have overlooked something obvious, can anyone help please?