with today's new patch I was able to access the game. the system requirements are back to being win 8.1 and dx 11. heartfelt thanks to all those who have worked hard to solve the problem.
I have the same problem. I have windows 8.1 and directx 11 and now, after patch, I need directx 12 to play. unfortunately directx 12 are only compatible with windows 10. now i can't install windows 10. is there a different solution or did this patch end my STO experience?