Well, I have
English (UK) and so George is available in Windows settings but VA does not offer him in the popup selection menu.
So I have just downloaded
English (United States) Speech and I can see David and Mark now as well in the Windows settings. But I neither can select them in VA
EDIT: I have just look into the old Control panels - Speech - Advanced settings and to my surprise David is available there (But not Mark nor George). So I select David, restart VA and now David is available in VA Profile Options. So I have now a male voice in VA.
Thanks for help!