Minimserver does not find Sony Music Centre Control Point

[Zeewier]

A further observation.
I have two media servers on my Asus E200HA notebook with Win10 Pro 10.0.18362 installed, but I don't run them simultaneously.
When Minimserver 0.8.5.2 (which I use for music streaming) is running, the Sony Music Center app on my iPhone does NOT see it. So streaming music directly to the Sony speaker is not possible.
When UMS (Universal Media Server) 8.2.0 (used for serving images) is running, Music Center DOES see it and can access all image folders (but images are not displayed of course since the renderer is a Sony wireless speaker).

This makes me wonder whether there is a specific incompatibility between Minimserver and the Music Center app, rather than an incompatibility more generally between Win10 and Music Center. As reported above, the latter was suggested by Sony tech support.