I had the recurrent “Press any key to Start” loop three days ago. I would press any key, and the screen would either go black or go to a 50% darkened image of the TBM and then back to the “Press any key to Start” animations. I was able to fix it initially by launching from the Xbox Beta App, which wasn’t necessary yesterday.
But as of this morning, it has recurred regardless even if I launch from the Xbox Beta App.
I
I haven’t got an “Eniki” on my keyboard. 
but yes, I had that a couple of times myself after install. What I found on my PC is that I was in windowed mode and the FS screen had lost focus, so pressing “eniki” wasn’t being read by the sim. ASOBO / Admin - confirm please.
My cure was twofold and simple: either a - use the mouse, move cursor over the sim window and then attack the keyboard violently… errr… just a normal keypress. Or b: use fullscreen mode so that you are forced to be “in focus”.
BTW I am using a logitech wireless keyboard and mouse. M problem hasn’t recurred yet.
Running in full screen mode…
It was a thought…
I didn’t have that problem so far. Now I do.
Same here. Sim was working fine 2 days ago. Have not changed any settings. Now am unable to get past the “Press Any Key To Start” screen.
Microsoft hope you are reading these forums and can provide an answer, otherwise refund money.