I'm running Windows 10 (version 1809 on both machines - 1 laptop / 1 desktop). When I try to share from my desktop PC to my laptop, my laptop is found (see 1st image 'MikeHP2000') and the file transfers correctly.
But when I try to share from my laptop to my desktop PC, my desktop PC is not found. (2nd image).
To the best of my ability I have all the file sharing settings exactly the same for both machines.
As far as I can see all of the Windows Defender firewall settings are the same on both machines.
I'm not very knowledgeable about networking stuff so any help is appreciated.