I have installed steam, but when I open it, it only shows me a black screen. Only the header menu shows. And when I try to run a game (the .exe file) it pops up "Do you want to share macOS applications with Windows?" I must click yes to run the game, and then it opens the game in the MAC version of steam (or streams it from my windows version to Mac steam.) Steam ran perfectly the day I installed the technical preview. This is one of the only reasons I have parallels. I will post the other issues I've been having on a separate thread.