Thanks a lot Andrew -- but where is the 'router' in my setup, is it the PC's LAN adapter? Maybe I should explain, there is
no NAS involved. My media files are on USB hard drives, directly connected to the PC that feeds them to the TV over a single LAN cable. (So in your terms, my 'main server' is the Media Center PC, right? ;-)
So when connected to the PC, my TV offers me to use static or dynamic IPs, and in the current setup (static IPs on the PC, as shown above) gives me this message (screenshot translated from German): "Network status: Manual mode. Wired network connection established." The numbers for Subnet, Gateway and DNS clearly use the IPv4 settings from the PC, while the TV seems to give itself a random IP address (in the 192.168.x.x range)...
So far, so confusing. But why don't the very same settings work on the new Win10 PC as well, neither on static nor dynamic (DHCP) IPs?
I begin to believe that Win10 prevents the use of other DLNA apps than Microsoft's WMP, who actually showed up on the TV, once Win10's 'Media Streaming' was enabled... (However on the settings page, when you follow the link 'More information on Media streaming' to MS support, you get to a common Win10 FAQ with
NO information whatsoever on media streaming, it doesn't even mention the term. And if you search for more, results for 'media streaming' are only user/ forum questions (
eg. here), no support articles! That's how MS tries to 'win' the media streaming hype -- just a joke!
Sorry if I got carried away... if you have any more insights to share on the issue, please do! Thanks & regards, A.