Is the Surface using Home Group, or the other networking area such as Work Group? Last update, 1803, if you already have it, removed Home Group. It's been deprecated, gone, finished, kaput.
I have 2 laptops and one desktop, all using windows 10. The latest is a SurfaceBook (SB) and it can see both other PC's. The desktop and other laptop can only see each other and not the SB.
All settings appear to be the same on each.
Can anyone kindly suggest what might be the problem?