For some reason Kodi on Windows 10 PC can see my server and plays etc. but the Plug in cannot see the server.

On my iPOD, Andoid etc running Kodi the plugin is working fine but not on the Windows PC.

Playback does stock occasionally but I don't believe this is related.

I have tested using Kodi 16 (Using latest version of Mezzmo and bundled plugin).

PC is a clean install of Windows 10 and only has Mezzmo Kodi installed.

Re-tested with re-install of Kodi 16 and also tested with Kodi 17

I have even switched firewalls and AV with no difference (reason unrelated but removed one more explanation).

Run out of ideas now.